[libc-commits] [libc] [libc][math][c++23] Add nanbf16 math function (PR #153995)
Krishna Pandey via libc-commits
libc-commits at lists.llvm.org
Sat Aug 23 01:41:51 PDT 2025
https://github.com/krishna2803 updated https://github.com/llvm/llvm-project/pull/153995
>From b58785d627db072eee8cc8f06adc57268d75a8d1 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 05:03:27 +0530
Subject: [PATCH 01/17] feat: implement {,u}fromfp{,x}bf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/math/CMakeLists.txt | 4 ++
libc/src/math/fromfpbf16.h | 21 ++++++++++
libc/src/math/fromfpxbf16.h | 21 ++++++++++
libc/src/math/generic/CMakeLists.txt | 56 ++++++++++++++++++++++++++
libc/src/math/generic/fromfpbf16.cpp | 22 ++++++++++
libc/src/math/generic/fromfpxbf16.cpp | 22 ++++++++++
libc/src/math/generic/ufromfpbf16.cpp | 22 ++++++++++
libc/src/math/generic/ufromfpxbf16.cpp | 22 ++++++++++
libc/src/math/ufromfpbf16.h | 21 ++++++++++
libc/src/math/ufromfpxbf16.h | 21 ++++++++++
10 files changed, 232 insertions(+)
create mode 100644 libc/src/math/fromfpbf16.h
create mode 100644 libc/src/math/fromfpxbf16.h
create mode 100644 libc/src/math/generic/fromfpbf16.cpp
create mode 100644 libc/src/math/generic/fromfpxbf16.cpp
create mode 100644 libc/src/math/generic/ufromfpbf16.cpp
create mode 100644 libc/src/math/generic/ufromfpxbf16.cpp
create mode 100644 libc/src/math/ufromfpbf16.h
create mode 100644 libc/src/math/ufromfpxbf16.h
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 8db5901afa9c0..f94120272ce66 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -312,12 +312,14 @@ add_math_entrypoint_object(fromfpf)
add_math_entrypoint_object(fromfpl)
add_math_entrypoint_object(fromfpf16)
add_math_entrypoint_object(fromfpf128)
+add_math_entrypoint_object(fromfpbf16)
add_math_entrypoint_object(fromfpx)
add_math_entrypoint_object(fromfpxf)
add_math_entrypoint_object(fromfpxl)
add_math_entrypoint_object(fromfpxf16)
add_math_entrypoint_object(fromfpxf128)
+add_math_entrypoint_object(fromfpxbf16)
add_math_entrypoint_object(fsub)
add_math_entrypoint_object(fsubl)
@@ -567,12 +569,14 @@ add_math_entrypoint_object(ufromfpf)
add_math_entrypoint_object(ufromfpl)
add_math_entrypoint_object(ufromfpf16)
add_math_entrypoint_object(ufromfpf128)
+add_math_entrypoint_object(ufromfpbf16)
add_math_entrypoint_object(ufromfpx)
add_math_entrypoint_object(ufromfpxf)
add_math_entrypoint_object(ufromfpxl)
add_math_entrypoint_object(ufromfpxf16)
add_math_entrypoint_object(ufromfpxf128)
+add_math_entrypoint_object(ufromfpxbf16)
add_math_entrypoint_object(bf16add)
add_math_entrypoint_object(bf16addf)
diff --git a/libc/src/math/fromfpbf16.h b/libc/src/math/fromfpbf16.h
new file mode 100644
index 0000000000000..bff991c6c1ed5
--- /dev/null
+++ b/libc/src/math/fromfpbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for fromfpbf16 --------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FROMFPBF16_H
+#define LLVM_LIBC_SRC_MATH_FROMFPBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 fromfpbf16(bfloat16 x, int rnd, unsigned int width);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_FROMFPBF16_H
diff --git a/libc/src/math/fromfpxbf16.h b/libc/src/math/fromfpxbf16.h
new file mode 100644
index 0000000000000..e40d975617ef2
--- /dev/null
+++ b/libc/src/math/fromfpxbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for fromfpxbf16 -------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FROMFPXBF16_H
+#define LLVM_LIBC_SRC_MATH_FROMFPXBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 fromfpxbf16(bfloat16 x, int rnd, unsigned int width);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_FROMFPXBF16_H
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 65e4839268443..1608bed87cb6b 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -3745,6 +3745,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.nearest_integer_operations
)
+add_entrypoint_object(
+ fromfpbf16
+ SRCS
+ fromfpbf16.cpp
+ HDRS
+ ../fromfpbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.nearest_integer_operations
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
fromfpx
SRCS
@@ -3797,6 +3811,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.nearest_integer_operations
)
+add_entrypoint_object(
+ fromfpxbf16
+ SRCS
+ fromfpxbf16.cpp
+ HDRS
+ ../fromfpxbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.nearest_integer_operations
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
ufromfp
SRCS
@@ -3849,6 +3877,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.nearest_integer_operations
)
+add_entrypoint_object(
+ ufromfpbf16
+ SRCS
+ ufromfpbf16.cpp
+ HDRS
+ ../ufromfpbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.nearest_integer_operations
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
ufromfpx
SRCS
@@ -3901,6 +3943,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.nearest_integer_operations
)
+add_entrypoint_object(
+ ufromfpxbf16
+ SRCS
+ ufromfpxbf16.cpp
+ HDRS
+ ../ufromfpxbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.nearest_integer_operations
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
coshf
SRCS
diff --git a/libc/src/math/generic/fromfpbf16.cpp b/libc/src/math/generic/fromfpbf16.cpp
new file mode 100644
index 0000000000000..db1b8f18f6810
--- /dev/null
+++ b/libc/src/math/generic/fromfpbf16.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of fromfpbf16 function -----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fromfpbf16.h"
+#include "src/__support/FPUtil/NearestIntegerOperations.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, fromfpbf16,
+ (bfloat16 x, int rnd, unsigned int width)) {
+ return fputil::fromfp</*IsSigned=*/true>(x, rnd, width);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/fromfpxbf16.cpp b/libc/src/math/generic/fromfpxbf16.cpp
new file mode 100644
index 0000000000000..8c16c411265ab
--- /dev/null
+++ b/libc/src/math/generic/fromfpxbf16.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of fromfpxbf16 function ----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/fromfpxbf16.h"
+#include "src/__support/FPUtil/NearestIntegerOperations.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, fromfpxbf16,
+ (bfloat16 x, int rnd, unsigned int width)) {
+ return fputil::fromfpx</*IsSigned=*/true>(x, rnd, width);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/ufromfpbf16.cpp b/libc/src/math/generic/ufromfpbf16.cpp
new file mode 100644
index 0000000000000..336771b695d97
--- /dev/null
+++ b/libc/src/math/generic/ufromfpbf16.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of ufromfpbf16 function ----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/ufromfpbf16.h"
+#include "src/__support/FPUtil/NearestIntegerOperations.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, ufromfpbf16,
+ (bfloat16 x, int rnd, unsigned int width)) {
+ return fputil::fromfp</*IsSigned=*/false>(x, rnd, width);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/ufromfpxbf16.cpp b/libc/src/math/generic/ufromfpxbf16.cpp
new file mode 100644
index 0000000000000..ac9cf44470a8e
--- /dev/null
+++ b/libc/src/math/generic/ufromfpxbf16.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of ufromfpxbf16 function ---------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/ufromfpxbf16.h"
+#include "src/__support/FPUtil/NearestIntegerOperations.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, ufromfpxbf16,
+ (bfloat16 x, int rnd, unsigned int width)) {
+ return fputil::fromfpx</*IsSigned=*/false>(x, rnd, width);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/ufromfpbf16.h b/libc/src/math/ufromfpbf16.h
new file mode 100644
index 0000000000000..1fd876a15e600
--- /dev/null
+++ b/libc/src/math/ufromfpbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for ufromfpbf16 -------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_UFROMFPBF16_H
+#define LLVM_LIBC_SRC_MATH_UFROMFPBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 ufromfpbf16(bfloat16 x, int rnd, unsigned int width);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_UFROMFPBF16_H
diff --git a/libc/src/math/ufromfpxbf16.h b/libc/src/math/ufromfpxbf16.h
new file mode 100644
index 0000000000000..ec63744c8045b
--- /dev/null
+++ b/libc/src/math/ufromfpxbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for ufromfpxbf16 ------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_UFROMFPXBF16_H
+#define LLVM_LIBC_SRC_MATH_UFROMFPXBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 ufromfpxbf16(bfloat16 x, int rnd, unsigned int width);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_UFROMFPXBF16_H
>From 0a2b5278c817a3b75c61a2a655a50aba76e050b3 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 05:03:49 +0530
Subject: [PATCH 02/17] chore: add tests for {,u}fromfp{,x}bf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/test/src/math/smoke/CMakeLists.txt | 53 ++++++++++++++++++
libc/test/src/math/smoke/FromfpTest.h | 56 +++++++++----------
libc/test/src/math/smoke/FromfpxTest.h | 48 ++++++++--------
libc/test/src/math/smoke/UfromfpTest.h | 28 +++++-----
libc/test/src/math/smoke/UfromfpxTest.h | 24 ++++----
libc/test/src/math/smoke/fromfpbf16_test.cpp | 14 +++++
libc/test/src/math/smoke/fromfpxbf16_test.cpp | 14 +++++
libc/test/src/math/smoke/ufromfpbf16_test.cpp | 14 +++++
.../test/src/math/smoke/ufromfpxbf16_test.cpp | 14 +++++
9 files changed, 187 insertions(+), 78 deletions(-)
create mode 100644 libc/test/src/math/smoke/fromfpbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/fromfpxbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/ufromfpbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/ufromfpxbf16_test.cpp
diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index 00881bd27f24e..694467e19d47c 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -1596,6 +1596,19 @@ add_fp_unittest(
libc.src.math.fromfpf128
)
+add_fp_unittest(
+ fromfpbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ fromfpbf16_test.cpp
+ HDRS
+ FromfpTest.h
+ DEPENDS
+ libc.src.math.fromfpbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
fromfpx_test
SUITE
@@ -1656,6 +1669,20 @@ add_fp_unittest(
libc.src.math.fromfpxf128
)
+add_fp_unittest(
+ fromfpxbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ fromfpxbf16_test.cpp
+ HDRS
+ FromfpxTest.h
+ DEPENDS
+ libc.src.math.fromfpxbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
+
add_fp_unittest(
ufromfp_test
SUITE
@@ -1716,6 +1743,19 @@ add_fp_unittest(
libc.src.math.ufromfpf128
)
+add_fp_unittest(
+ ufromfpbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ ufromfpbf16_test.cpp
+ HDRS
+ UfromfpTest.h
+ DEPENDS
+ libc.src.math.ufromfpbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
ufromfpx_test
SUITE
@@ -1776,6 +1816,19 @@ add_fp_unittest(
libc.src.math.ufromfpxf128
)
+add_fp_unittest(
+ ufromfpxbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ ufromfpxbf16_test.cpp
+ HDRS
+ UfromfpxTest.h
+ DEPENDS
+ libc.src.math.ufromfpxbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
ilogb_test
SUITE
diff --git a/libc/test/src/math/smoke/FromfpTest.h b/libc/test/src/math/smoke/FromfpTest.h
index 56205187d731c..d786dfdf8dc5a 100644
--- a/libc/test/src/math/smoke/FromfpTest.h
+++ b/libc/test/src/math/smoke/FromfpTest.h
@@ -85,10 +85,10 @@ class FromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(-10.0), func(T(-10.32), FP_INT_UPWARD, 5U));
EXPECT_FP_EQ(T(11.0), func(T(10.65), FP_INT_UPWARD, 5U));
EXPECT_FP_EQ(T(-10.0), func(T(-10.65), FP_INT_UPWARD, 5U));
- EXPECT_FP_EQ(T(124.0), func(T(123.38), FP_INT_UPWARD, 8U));
- EXPECT_FP_EQ(T(-123.0), func(T(-123.38), FP_INT_UPWARD, 8U));
- EXPECT_FP_EQ(T(124.0), func(T(123.96), FP_INT_UPWARD, 8U));
- EXPECT_FP_EQ(T(-123.0), func(T(-123.96), FP_INT_UPWARD, 8U));
+ EXPECT_FP_EQ(T(64.0), func(T(63.25), FP_INT_UPWARD, 8U));
+ EXPECT_FP_EQ(T(-63.0), func(T(-63.25), FP_INT_UPWARD, 8U));
+ EXPECT_FP_EQ(T(64.0), func(T(63.75), FP_INT_UPWARD, 8U));
+ EXPECT_FP_EQ(T(-63.0), func(T(-63.75), FP_INT_UPWARD, 8U));
}
void testFractionsUpwardOutsideRange(FromfpFunc func) {
@@ -139,10 +139,10 @@ class FromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(-11.0), func(T(-10.32), FP_INT_DOWNWARD, 5U));
EXPECT_FP_EQ(T(10.0), func(T(10.65), FP_INT_DOWNWARD, 5U));
EXPECT_FP_EQ(T(-11.0), func(T(-10.65), FP_INT_DOWNWARD, 5U));
- EXPECT_FP_EQ(T(123.0), func(T(123.38), FP_INT_DOWNWARD, 8U));
- EXPECT_FP_EQ(T(-124.0), func(T(-123.38), FP_INT_DOWNWARD, 8U));
- EXPECT_FP_EQ(T(123.0), func(T(123.96), FP_INT_DOWNWARD, 8U));
- EXPECT_FP_EQ(T(-124.0), func(T(-123.96), FP_INT_DOWNWARD, 8U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.25), FP_INT_DOWNWARD, 8U));
+ EXPECT_FP_EQ(T(-64.0), func(T(-63.25), FP_INT_DOWNWARD, 8U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.75), FP_INT_DOWNWARD, 8U));
+ EXPECT_FP_EQ(T(-64.0), func(T(-63.75), FP_INT_DOWNWARD, 8U));
}
void testFractionsDownwardOutsideRange(FromfpFunc func) {
@@ -193,10 +193,10 @@ class FromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(-10.0), func(T(-10.32), FP_INT_TOWARDZERO, 5U));
EXPECT_FP_EQ(T(10.0), func(T(10.65), FP_INT_TOWARDZERO, 5U));
EXPECT_FP_EQ(T(-10.0), func(T(-10.65), FP_INT_TOWARDZERO, 5U));
- EXPECT_FP_EQ(T(123.0), func(T(123.38), FP_INT_TOWARDZERO, 8U));
- EXPECT_FP_EQ(T(-123.0), func(T(-123.38), FP_INT_TOWARDZERO, 8U));
- EXPECT_FP_EQ(T(123.0), func(T(123.96), FP_INT_TOWARDZERO, 8U));
- EXPECT_FP_EQ(T(-123.0), func(T(-123.96), FP_INT_TOWARDZERO, 8U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.25), FP_INT_TOWARDZERO, 8U));
+ EXPECT_FP_EQ(T(-63.0), func(T(-63.25), FP_INT_TOWARDZERO, 8U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.75), FP_INT_TOWARDZERO, 8U));
+ EXPECT_FP_EQ(T(-63.0), func(T(-63.75), FP_INT_TOWARDZERO, 8U));
}
void testFractionsTowardZeroOutsideRange(FromfpFunc func) {
@@ -241,10 +241,10 @@ class FromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(-10.0), func(T(-10.32), FP_INT_TONEARESTFROMZERO, 5U));
EXPECT_FP_EQ(T(11.0), func(T(10.65), FP_INT_TONEARESTFROMZERO, 5U));
EXPECT_FP_EQ(T(-11.0), func(T(-10.65), FP_INT_TONEARESTFROMZERO, 5U));
- EXPECT_FP_EQ(T(123.0), func(T(123.38), FP_INT_TONEARESTFROMZERO, 8U));
- EXPECT_FP_EQ(T(-123.0), func(T(-123.38), FP_INT_TONEARESTFROMZERO, 8U));
- EXPECT_FP_EQ(T(124.0), func(T(123.96), FP_INT_TONEARESTFROMZERO, 8U));
- EXPECT_FP_EQ(T(-124.0), func(T(-123.96), FP_INT_TONEARESTFROMZERO, 8U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.25), FP_INT_TONEARESTFROMZERO, 8U));
+ EXPECT_FP_EQ(T(-63.0), func(T(-63.25), FP_INT_TONEARESTFROMZERO, 8U));
+ EXPECT_FP_EQ(T(64.0), func(T(63.75), FP_INT_TONEARESTFROMZERO, 8U));
+ EXPECT_FP_EQ(T(-64.0), func(T(-63.75), FP_INT_TONEARESTFROMZERO, 8U));
}
void testFractionsToNearestFromZeroOutsideRange(FromfpFunc func) {
@@ -297,10 +297,10 @@ class FromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(-10.0), func(T(-10.32), FP_INT_TONEAREST, 5U));
EXPECT_FP_EQ(T(11.0), func(T(10.65), FP_INT_TONEAREST, 5U));
EXPECT_FP_EQ(T(-11.0), func(T(-10.65), FP_INT_TONEAREST, 5U));
- EXPECT_FP_EQ(T(123.0), func(T(123.38), FP_INT_TONEAREST, 8U));
- EXPECT_FP_EQ(T(-123.0), func(T(-123.38), FP_INT_TONEAREST, 8U));
- EXPECT_FP_EQ(T(124.0), func(T(123.96), FP_INT_TONEAREST, 8U));
- EXPECT_FP_EQ(T(-124.0), func(T(-123.96), FP_INT_TONEAREST, 8U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.25), FP_INT_TONEAREST, 8U));
+ EXPECT_FP_EQ(T(-63.0), func(T(-63.25), FP_INT_TONEAREST, 8U));
+ EXPECT_FP_EQ(T(64.0), func(T(63.75), FP_INT_TONEAREST, 8U));
+ EXPECT_FP_EQ(T(-64.0), func(T(-63.75), FP_INT_TONEAREST, 8U));
EXPECT_FP_EQ(T(2.0), func(T(2.3), FP_INT_TONEAREST, 3U));
EXPECT_FP_EQ(T(-2.0), func(T(-2.3), FP_INT_TONEAREST, 2U));
@@ -391,14 +391,14 @@ class FromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(11.0), func(T(10.65), UNKNOWN_MATH_ROUNDING_DIRECTION, 5U));
EXPECT_FP_EQ(T(-11.0),
func(T(-10.65), UNKNOWN_MATH_ROUNDING_DIRECTION, 5U));
- EXPECT_FP_EQ(T(123.0),
- func(T(123.38), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U));
- EXPECT_FP_EQ(T(-123.0),
- func(T(-123.38), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U));
- EXPECT_FP_EQ(T(124.0),
- func(T(123.96), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U));
- EXPECT_FP_EQ(T(-124.0),
- func(T(-123.96), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U));
+ EXPECT_FP_EQ(T(63.0),
+ func(T(63.25), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U));
+ EXPECT_FP_EQ(T(-63.0),
+ func(T(-63.25), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U));
+ EXPECT_FP_EQ(T(64.0),
+ func(T(63.75), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U));
+ EXPECT_FP_EQ(T(-64.0),
+ func(T(-63.75), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U));
EXPECT_FP_EQ(T(2.0), func(T(2.3), UNKNOWN_MATH_ROUNDING_DIRECTION, 3U));
EXPECT_FP_EQ(T(-2.0), func(T(-2.3), UNKNOWN_MATH_ROUNDING_DIRECTION, 2U));
diff --git a/libc/test/src/math/smoke/FromfpxTest.h b/libc/test/src/math/smoke/FromfpxTest.h
index a175a66e21b64..cb4c98b10685b 100644
--- a/libc/test/src/math/smoke/FromfpxTest.h
+++ b/libc/test/src/math/smoke/FromfpxTest.h
@@ -101,13 +101,13 @@ class FromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(T(-10.0), func(T(-10.65), FP_INT_UPWARD, 5U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(124.0), func(T(123.38), FP_INT_UPWARD, 8U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(64.0), func(T(63.25), FP_INT_UPWARD, 8U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(-123.0), func(T(-123.38), FP_INT_UPWARD, 8U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(-63.0), func(T(-63.25), FP_INT_UPWARD, 8U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(124.0), func(T(123.96), FP_INT_UPWARD, 8U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(64.0), func(T(63.75), FP_INT_UPWARD, 8U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(-123.0), func(T(-123.96), FP_INT_UPWARD, 8U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(-63.0), func(T(-63.75), FP_INT_UPWARD, 8U),
FE_INEXACT);
}
@@ -175,14 +175,14 @@ class FromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(T(-11.0), func(T(-10.65), FP_INT_DOWNWARD, 5U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(123.0), func(T(123.38), FP_INT_DOWNWARD, 8U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(63.0), func(T(63.25), FP_INT_DOWNWARD, 8U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-124.0), func(T(-123.38), FP_INT_DOWNWARD, 8U), FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(123.0), func(T(123.96), FP_INT_DOWNWARD, 8U),
+ T(-64.0), func(T(-63.25), FP_INT_DOWNWARD, 8U), FE_INEXACT);
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(63.0), func(T(63.75), FP_INT_DOWNWARD, 8U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-124.0), func(T(-123.96), FP_INT_DOWNWARD, 8U), FE_INEXACT);
+ T(-64.0), func(T(-63.75), FP_INT_DOWNWARD, 8U), FE_INEXACT);
}
void testFractionsDownwardOutsideRange(FromfpxFunc func) {
@@ -250,13 +250,13 @@ class FromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ_WITH_EXCEPTION(
T(-10.0), func(T(-10.65), FP_INT_TOWARDZERO, 5U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(123.0), func(T(123.38), FP_INT_TOWARDZERO, 8U), FE_INEXACT);
+ T(63.0), func(T(63.25), FP_INT_TOWARDZERO, 8U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-123.0), func(T(-123.38), FP_INT_TOWARDZERO, 8U), FE_INEXACT);
+ T(-63.0), func(T(-63.25), FP_INT_TOWARDZERO, 8U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(123.0), func(T(123.96), FP_INT_TOWARDZERO, 8U), FE_INEXACT);
+ T(63.0), func(T(63.75), FP_INT_TOWARDZERO, 8U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-123.0), func(T(-123.96), FP_INT_TOWARDZERO, 8U), FE_INEXACT);
+ T(-63.0), func(T(-63.75), FP_INT_TOWARDZERO, 8U), FE_INEXACT);
}
void testFractionsTowardZeroOutsideRange(FromfpxFunc func) {
@@ -318,13 +318,13 @@ class FromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ_WITH_EXCEPTION(
T(-11.0), func(T(-10.65), FP_INT_TONEARESTFROMZERO, 5U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(123.0), func(T(123.38), FP_INT_TONEARESTFROMZERO, 8U), FE_INEXACT);
+ T(63.0), func(T(63.25), FP_INT_TONEARESTFROMZERO, 8U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-123.0), func(T(-123.38), FP_INT_TONEARESTFROMZERO, 8U), FE_INEXACT);
+ T(-63.0), func(T(-63.25), FP_INT_TONEARESTFROMZERO, 8U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(124.0), func(T(123.96), FP_INT_TONEARESTFROMZERO, 8U), FE_INEXACT);
+ T(64.0), func(T(63.75), FP_INT_TONEARESTFROMZERO, 8U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-124.0), func(T(-123.96), FP_INT_TONEARESTFROMZERO, 8U), FE_INEXACT);
+ T(-64.0), func(T(-63.75), FP_INT_TONEARESTFROMZERO, 8U), FE_INEXACT);
}
void testFractionsToNearestFromZeroOutsideRange(FromfpxFunc func) {
@@ -393,14 +393,14 @@ class FromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(T(-11.0), func(T(-10.65), FP_INT_TONEAREST, 5U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(123.0), func(T(123.38), FP_INT_TONEAREST, 8U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(63.0), func(T(63.25), FP_INT_TONEAREST, 8U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-123.0), func(T(-123.38), FP_INT_TONEAREST, 8U), FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(124.0), func(T(123.96), FP_INT_TONEAREST, 8U),
+ T(-63.0), func(T(-63.25), FP_INT_TONEAREST, 8U), FE_INEXACT);
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(64.0), func(T(63.75), FP_INT_TONEAREST, 8U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-124.0), func(T(-123.96), FP_INT_TONEAREST, 8U), FE_INEXACT);
+ T(-64.0), func(T(-63.75), FP_INT_TONEAREST, 8U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(T(2.0), func(T(2.3), FP_INT_TONEAREST, 3U),
FE_INEXACT);
@@ -530,16 +530,16 @@ class FromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
T(-11.0), func(T(-10.65), UNKNOWN_MATH_ROUNDING_DIRECTION, 5U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(123.0), func(T(123.38), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U),
+ T(63.0), func(T(63.25), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-123.0), func(T(-123.38), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U),
+ T(-63.0), func(T(-63.25), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(124.0), func(T(123.96), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U),
+ T(64.0), func(T(63.75), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(-124.0), func(T(-123.96), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U),
+ T(-64.0), func(T(-63.75), UNKNOWN_MATH_ROUNDING_DIRECTION, 8U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
diff --git a/libc/test/src/math/smoke/UfromfpTest.h b/libc/test/src/math/smoke/UfromfpTest.h
index 84c9f805193ed..237500af84bff 100644
--- a/libc/test/src/math/smoke/UfromfpTest.h
+++ b/libc/test/src/math/smoke/UfromfpTest.h
@@ -76,8 +76,8 @@ class UfromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(2.0), func(T(1.75), FP_INT_UPWARD, 2U));
EXPECT_FP_EQ(T(11.0), func(T(10.32), FP_INT_UPWARD, 4U));
EXPECT_FP_EQ(T(11.0), func(T(10.65), FP_INT_UPWARD, 4U));
- EXPECT_FP_EQ(T(124.0), func(T(123.38), FP_INT_UPWARD, 7U));
- EXPECT_FP_EQ(T(124.0), func(T(123.96), FP_INT_UPWARD, 7U));
+ EXPECT_FP_EQ(T(64.0), func(T(63.25), FP_INT_UPWARD, 7U));
+ EXPECT_FP_EQ(T(64.0), func(T(63.75), FP_INT_UPWARD, 7U));
}
void testFractionsUpwardOutsideRange(UfromfpFunc func) {
@@ -120,8 +120,8 @@ class UfromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(1.0), func(T(1.75), FP_INT_DOWNWARD, 1U));
EXPECT_FP_EQ(T(10.0), func(T(10.32), FP_INT_DOWNWARD, 4U));
EXPECT_FP_EQ(T(10.0), func(T(10.65), FP_INT_DOWNWARD, 4U));
- EXPECT_FP_EQ(T(123.0), func(T(123.38), FP_INT_DOWNWARD, 7U));
- EXPECT_FP_EQ(T(123.0), func(T(123.96), FP_INT_DOWNWARD, 7U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.25), FP_INT_DOWNWARD, 7U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.75), FP_INT_DOWNWARD, 7U));
}
void testFractionsDownwardOutsideRange(UfromfpFunc func) {
@@ -167,8 +167,8 @@ class UfromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(1.0), func(T(1.75), FP_INT_TOWARDZERO, 1U));
EXPECT_FP_EQ(T(10.0), func(T(10.32), FP_INT_TOWARDZERO, 4U));
EXPECT_FP_EQ(T(10.0), func(T(10.65), FP_INT_TOWARDZERO, 4U));
- EXPECT_FP_EQ(T(123.0), func(T(123.38), FP_INT_TOWARDZERO, 7U));
- EXPECT_FP_EQ(T(123.0), func(T(123.96), FP_INT_TOWARDZERO, 7U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.25), FP_INT_TOWARDZERO, 7U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.75), FP_INT_TOWARDZERO, 7U));
}
void testFractionsTowardZeroOutsideRange(UfromfpFunc func) {
@@ -206,8 +206,8 @@ class UfromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(2.0), func(T(1.75), FP_INT_TONEARESTFROMZERO, 2U));
EXPECT_FP_EQ(T(10.0), func(T(10.32), FP_INT_TONEARESTFROMZERO, 4U));
EXPECT_FP_EQ(T(11.0), func(T(10.65), FP_INT_TONEARESTFROMZERO, 4U));
- EXPECT_FP_EQ(T(123.0), func(T(123.38), FP_INT_TONEARESTFROMZERO, 7U));
- EXPECT_FP_EQ(T(124.0), func(T(123.96), FP_INT_TONEARESTFROMZERO, 7U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.25), FP_INT_TONEARESTFROMZERO, 7U));
+ EXPECT_FP_EQ(T(64.0), func(T(63.75), FP_INT_TONEARESTFROMZERO, 7U));
}
void testFractionsToNearestFromZeroOutsideRange(UfromfpFunc func) {
@@ -254,8 +254,8 @@ class UfromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(2.0), func(T(1.75), FP_INT_TONEAREST, 2U));
EXPECT_FP_EQ(T(10.0), func(T(10.32), FP_INT_TONEAREST, 4U));
EXPECT_FP_EQ(T(11.0), func(T(10.65), FP_INT_TONEAREST, 4U));
- EXPECT_FP_EQ(T(123.0), func(T(123.38), FP_INT_TONEAREST, 7U));
- EXPECT_FP_EQ(T(124.0), func(T(123.96), FP_INT_TONEAREST, 7U));
+ EXPECT_FP_EQ(T(63.0), func(T(63.25), FP_INT_TONEAREST, 7U));
+ EXPECT_FP_EQ(T(64.0), func(T(63.75), FP_INT_TONEAREST, 7U));
EXPECT_FP_EQ(T(2.0), func(T(2.3), FP_INT_TONEAREST, 2U));
EXPECT_FP_EQ(T(2.0), func(T(2.5), FP_INT_TONEAREST, 2U));
@@ -332,10 +332,10 @@ class UfromfpTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(T(2.0), func(T(1.75), UNKNOWN_MATH_ROUNDING_DIRECTION, 2U));
EXPECT_FP_EQ(T(10.0), func(T(10.32), UNKNOWN_MATH_ROUNDING_DIRECTION, 4U));
EXPECT_FP_EQ(T(11.0), func(T(10.65), UNKNOWN_MATH_ROUNDING_DIRECTION, 4U));
- EXPECT_FP_EQ(T(123.0),
- func(T(123.38), UNKNOWN_MATH_ROUNDING_DIRECTION, 7U));
- EXPECT_FP_EQ(T(124.0),
- func(T(123.96), UNKNOWN_MATH_ROUNDING_DIRECTION, 7U));
+ EXPECT_FP_EQ(T(63.0),
+ func(T(63.25), UNKNOWN_MATH_ROUNDING_DIRECTION, 7U));
+ EXPECT_FP_EQ(T(64.0),
+ func(T(63.75), UNKNOWN_MATH_ROUNDING_DIRECTION, 7U));
EXPECT_FP_EQ(T(2.0), func(T(2.3), UNKNOWN_MATH_ROUNDING_DIRECTION, 2U));
EXPECT_FP_EQ(T(2.0), func(T(2.5), UNKNOWN_MATH_ROUNDING_DIRECTION, 2U));
diff --git a/libc/test/src/math/smoke/UfromfpxTest.h b/libc/test/src/math/smoke/UfromfpxTest.h
index 5916492d79187..e39e09b71f825 100644
--- a/libc/test/src/math/smoke/UfromfpxTest.h
+++ b/libc/test/src/math/smoke/UfromfpxTest.h
@@ -87,9 +87,9 @@ class UfromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(T(11.0), func(T(10.65), FP_INT_UPWARD, 4U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(124.0), func(T(123.38), FP_INT_UPWARD, 7U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(64.0), func(T(63.25), FP_INT_UPWARD, 7U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(124.0), func(T(123.96), FP_INT_UPWARD, 7U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(64.0), func(T(63.75), FP_INT_UPWARD, 7U),
FE_INEXACT);
}
@@ -141,9 +141,9 @@ class UfromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(T(10.0), func(T(10.65), FP_INT_DOWNWARD, 4U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(123.0), func(T(123.38), FP_INT_DOWNWARD, 7U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(63.0), func(T(63.25), FP_INT_DOWNWARD, 7U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(123.0), func(T(123.96), FP_INT_DOWNWARD, 7U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(63.0), func(T(63.75), FP_INT_DOWNWARD, 7U),
FE_INEXACT);
}
@@ -202,9 +202,9 @@ class UfromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ_WITH_EXCEPTION(T(10.0), func(T(10.65), FP_INT_TOWARDZERO, 4U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(123.0), func(T(123.38), FP_INT_TOWARDZERO, 7U), FE_INEXACT);
+ T(63.0), func(T(63.25), FP_INT_TOWARDZERO, 7U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(123.0), func(T(123.96), FP_INT_TOWARDZERO, 7U), FE_INEXACT);
+ T(63.0), func(T(63.75), FP_INT_TOWARDZERO, 7U), FE_INEXACT);
}
void testFractionsTowardZeroOutsideRange(UfromfpxFunc func) {
@@ -252,9 +252,9 @@ class UfromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ_WITH_EXCEPTION(
T(11.0), func(T(10.65), FP_INT_TONEARESTFROMZERO, 4U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(123.0), func(T(123.38), FP_INT_TONEARESTFROMZERO, 7U), FE_INEXACT);
+ T(63.0), func(T(63.25), FP_INT_TONEARESTFROMZERO, 7U), FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(124.0), func(T(123.96), FP_INT_TONEARESTFROMZERO, 7U), FE_INEXACT);
+ T(64.0), func(T(63.75), FP_INT_TONEARESTFROMZERO, 7U), FE_INEXACT);
}
void testFractionsToNearestFromZeroOutsideRange(UfromfpxFunc func) {
@@ -311,9 +311,9 @@ class UfromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(T(11.0), func(T(10.65), FP_INT_TONEAREST, 4U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(123.0), func(T(123.38), FP_INT_TONEAREST, 7U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(63.0), func(T(63.25), FP_INT_TONEAREST, 7U),
FE_INEXACT);
- EXPECT_FP_EQ_WITH_EXCEPTION(T(124.0), func(T(123.96), FP_INT_TONEAREST, 7U),
+ EXPECT_FP_EQ_WITH_EXCEPTION(T(64.0), func(T(63.75), FP_INT_TONEAREST, 7U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(T(2.0), func(T(2.3), FP_INT_TONEAREST, 2U),
@@ -414,10 +414,10 @@ class UfromfpxTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
T(11.0), func(T(10.65), UNKNOWN_MATH_ROUNDING_DIRECTION, 4U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(123.0), func(T(123.38), UNKNOWN_MATH_ROUNDING_DIRECTION, 7U),
+ T(63.0), func(T(63.25), UNKNOWN_MATH_ROUNDING_DIRECTION, 7U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
- T(124.0), func(T(123.96), UNKNOWN_MATH_ROUNDING_DIRECTION, 7U),
+ T(64.0), func(T(63.75), UNKNOWN_MATH_ROUNDING_DIRECTION, 7U),
FE_INEXACT);
EXPECT_FP_EQ_WITH_EXCEPTION(
diff --git a/libc/test/src/math/smoke/fromfpbf16_test.cpp b/libc/test/src/math/smoke/fromfpbf16_test.cpp
new file mode 100644
index 0000000000000..45d70b2a05c4f
--- /dev/null
+++ b/libc/test/src/math/smoke/fromfpbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for fromfpbf16 ------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "FromfpTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/fromfpbf16.h"
+
+LIST_FROMFP_TESTS(bfloat16, LIBC_NAMESPACE::fromfpbf16)
diff --git a/libc/test/src/math/smoke/fromfpxbf16_test.cpp b/libc/test/src/math/smoke/fromfpxbf16_test.cpp
new file mode 100644
index 0000000000000..7630b7e887356
--- /dev/null
+++ b/libc/test/src/math/smoke/fromfpxbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for fromfpxbf16 -----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "FromfpxTest.h"
+
+#include "src/math/fromfpxbf16.h"
+#include "src/__support/FPUtil/bfloat16.h"
+
+LIST_FROMFPX_TESTS(bfloat16, LIBC_NAMESPACE::fromfpxbf16)
diff --git a/libc/test/src/math/smoke/ufromfpbf16_test.cpp b/libc/test/src/math/smoke/ufromfpbf16_test.cpp
new file mode 100644
index 0000000000000..52189bbfa8997
--- /dev/null
+++ b/libc/test/src/math/smoke/ufromfpbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for ufromfpbf16 -----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "UfromfpTest.h"
+
+#include "src/math/ufromfpbf16.h"
+#include "src/__support/FPUtil/bfloat16.h"
+
+LIST_UFROMFP_TESTS(bfloat16, LIBC_NAMESPACE::ufromfpbf16)
diff --git a/libc/test/src/math/smoke/ufromfpxbf16_test.cpp b/libc/test/src/math/smoke/ufromfpxbf16_test.cpp
new file mode 100644
index 0000000000000..71d25c718f53b
--- /dev/null
+++ b/libc/test/src/math/smoke/ufromfpxbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for ufromfpxbf16 ----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "UfromfpxTest.h"
+
+#include "src/math/ufromfpxbf16.h"
+#include "src/__support/FPUtil/bfloat16.h"
+
+LIST_UFROMFPX_TESTS(bfloat16, LIBC_NAMESPACE::ufromfpxbf16)
>From baaf0e03e1cbe4fead76f50a45c20bb5e976d3b2 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 05:06:00 +0530
Subject: [PATCH 03/17] chore: update entrypoints
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/config/baremetal/aarch64/entrypoints.txt | 4 ++++
libc/config/baremetal/arm/entrypoints.txt | 4 ++++
libc/config/baremetal/riscv/entrypoints.txt | 4 ++++
libc/config/darwin/aarch64/entrypoints.txt | 4 ++++
libc/config/darwin/x86_64/entrypoints.txt | 5 ++++-
libc/config/gpu/amdgpu/entrypoints.txt | 4 ++++
libc/config/gpu/nvptx/entrypoints.txt | 4 ++++
libc/config/linux/aarch64/entrypoints.txt | 4 ++++
libc/config/linux/arm/entrypoints.txt | 4 ++++
libc/config/linux/riscv/entrypoints.txt | 4 ++++
libc/config/linux/x86_64/entrypoints.txt | 4 ++++
libc/config/windows/entrypoints.txt | 4 ++++
12 files changed, 48 insertions(+), 1 deletion(-)
diff --git a/libc/config/baremetal/aarch64/entrypoints.txt b/libc/config/baremetal/aarch64/entrypoints.txt
index 00fd4675e7f09..c2710429b3cfd 100644
--- a/libc/config/baremetal/aarch64/entrypoints.txt
+++ b/libc/config/baremetal/aarch64/entrypoints.txt
@@ -785,9 +785,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
if(LIBC_TYPES_HAS_FLOAT128)
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index 9a7800c0f9b86..6e5389d542f80 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -788,9 +788,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
if(LIBC_TYPES_HAS_FLOAT128)
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 34b400bdc52c5..76da24d2cc876 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -788,9 +788,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
if(LIBC_TYPES_HAS_FLOAT128)
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index d45ec3589c97e..5bfd6c863fabb 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -618,9 +618,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
if(LIBC_TYPES_HAS_FLOAT128)
diff --git a/libc/config/darwin/x86_64/entrypoints.txt b/libc/config/darwin/x86_64/entrypoints.txt
index 1e12e9e167b73..27d214d06cd0b 100644
--- a/libc/config/darwin/x86_64/entrypoints.txt
+++ b/libc/config/darwin/x86_64/entrypoints.txt
@@ -261,10 +261,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
-
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
set(TARGET_LLVMLIBC_ENTRYPOINTS
diff --git a/libc/config/gpu/amdgpu/entrypoints.txt b/libc/config/gpu/amdgpu/entrypoints.txt
index 4b6f3337036aa..bc75956738e5a 100644
--- a/libc/config/gpu/amdgpu/entrypoints.txt
+++ b/libc/config/gpu/amdgpu/entrypoints.txt
@@ -644,9 +644,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
set(TARGET_LLVMLIBC_ENTRYPOINTS
diff --git a/libc/config/gpu/nvptx/entrypoints.txt b/libc/config/gpu/nvptx/entrypoints.txt
index d24cc740d4234..c9688284df16c 100644
--- a/libc/config/gpu/nvptx/entrypoints.txt
+++ b/libc/config/gpu/nvptx/entrypoints.txt
@@ -645,9 +645,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
set(TARGET_LLVMLIBC_ENTRYPOINTS
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index e71dc2ee0d02f..e42bbb14ec119 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -872,9 +872,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
if(LIBC_TYPES_HAS_FLOAT128)
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index ec01030c77d4f..60fc953c2b9f4 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -488,9 +488,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
set(TARGET_LLVMLIBC_ENTRYPOINTS
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index 54ea983d64839..1a03683d72e61 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -891,9 +891,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
if(LIBC_TYPES_HAS_FLOAT128)
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 1ee10e6d3cade..9b4946b883626 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -923,9 +923,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
if(LIBC_TYPES_HAS_FLOAT128)
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index 37a2ee286010a..b97e893567038 100644
--- a/libc/config/windows/entrypoints.txt
+++ b/libc/config/windows/entrypoints.txt
@@ -334,9 +334,13 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_magbf16
libc.src.math.fminimum_mag_numbf16
libc.src.math.fminimum_numbf16
+ libc.src.math.fromfpbf16
+ libc.src.math.fromfpxbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
+ libc.src.math.ufromfpbf16
+ libc.src.math.ufromfpxbf16
)
set(TARGET_LLVMLIBC_ENTRYPOINTS
>From 733f4f17cc9d6b1ad4f71e04cb7ce142196c0e3d Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 05:07:21 +0530
Subject: [PATCH 04/17] chore: update docs
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/docs/headers/math/index.rst | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/libc/docs/headers/math/index.rst b/libc/docs/headers/math/index.rst
index add34d0e877fd..754c1a55cf449 100644
--- a/libc/docs/headers/math/index.rst
+++ b/libc/docs/headers/math/index.rst
@@ -181,9 +181,9 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| frexp | |check| | |check| | |check| | |check| | |check| | | 7.12.6.7 | F.10.3.7 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| fromfp | |check| | |check| | |check| | |check| | |check| | | 7.12.9.10 | F.10.6.10 |
+| fromfp | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.9.10 | F.10.6.10 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| fromfpx | |check| | |check| | |check| | |check| | |check| | | 7.12.9.11 | F.10.6.11 |
+| fromfpx | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.9.11 | F.10.6.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| fsub | N/A | |check| | |check| | N/A | |check|\* | N/A | 7.12.14.2 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
@@ -247,9 +247,9 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| trunc | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.9.9 | F.10.6.9 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| ufromfp | |check| | |check| | |check| | |check| | |check| | | 7.12.9.10 | F.10.6.10 |
+| ufromfp | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.9.10 | F.10.6.10 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| ufromfpx | |check| | |check| | |check| | |check| | |check| | | 7.12.9.11 | F.10.6.11 |
+| ufromfpx | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.9.11 | F.10.6.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
Higher Math Functions
>From 4a80312010e3adaff8873a40831e74d393a1d71c Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 05:59:39 +0530
Subject: [PATCH 05/17] feat: implement next{after,down,toward,up}bf16 math
functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/math/CMakeLists.txt | 4 ++
libc/src/math/generic/CMakeLists.txt | 56 ++++++++++++++++++++++++
libc/src/math/generic/nextafterbf16.cpp | 21 +++++++++
libc/src/math/generic/nextdownbf16.cpp | 21 +++++++++
libc/src/math/generic/nexttowardbf16.cpp | 22 ++++++++++
libc/src/math/generic/nextupbf16.cpp | 21 +++++++++
libc/src/math/nextafterbf16.h | 21 +++++++++
libc/src/math/nextdownbf16.h | 21 +++++++++
libc/src/math/nexttowardbf16.h | 21 +++++++++
libc/src/math/nextupbf16.h | 21 +++++++++
10 files changed, 229 insertions(+)
create mode 100644 libc/src/math/generic/nextafterbf16.cpp
create mode 100644 libc/src/math/generic/nextdownbf16.cpp
create mode 100644 libc/src/math/generic/nexttowardbf16.cpp
create mode 100644 libc/src/math/generic/nextupbf16.cpp
create mode 100644 libc/src/math/nextafterbf16.h
create mode 100644 libc/src/math/nextdownbf16.h
create mode 100644 libc/src/math/nexttowardbf16.h
create mode 100644 libc/src/math/nextupbf16.h
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index f94120272ce66..3843247c4fa5b 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -431,23 +431,27 @@ add_math_entrypoint_object(nextafterf)
add_math_entrypoint_object(nextafterl)
add_math_entrypoint_object(nextafterf16)
add_math_entrypoint_object(nextafterf128)
+add_math_entrypoint_object(nextafterbf16)
add_math_entrypoint_object(nexttoward)
add_math_entrypoint_object(nexttowardf)
add_math_entrypoint_object(nexttowardl)
add_math_entrypoint_object(nexttowardf16)
+add_math_entrypoint_object(nexttowardbf16)
add_math_entrypoint_object(nextdown)
add_math_entrypoint_object(nextdownf)
add_math_entrypoint_object(nextdownl)
add_math_entrypoint_object(nextdownf16)
add_math_entrypoint_object(nextdownf128)
+add_math_entrypoint_object(nextdownbf16)
add_math_entrypoint_object(nextup)
add_math_entrypoint_object(nextupf)
add_math_entrypoint_object(nextupl)
add_math_entrypoint_object(nextupf16)
add_math_entrypoint_object(nextupf128)
+add_math_entrypoint_object(nextupbf16)
add_math_entrypoint_object(pow)
add_math_entrypoint_object(powf)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 1608bed87cb6b..822da74d7597e 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -3496,6 +3496,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.manipulation_functions
)
+add_entrypoint_object(
+ nextafterbf16
+ SRCS
+ nextafterbf16.cpp
+ HDRS
+ ../nextafterbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
nexttoward
SRCS
@@ -3537,6 +3551,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.manipulation_functions
)
+add_entrypoint_object(
+ nexttowardbf16
+ SRCS
+ nexttowardbf16.cpp
+ HDRS
+ ../nexttowardbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
nextdown
SRCS
@@ -3589,6 +3617,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.manipulation_functions
)
+add_entrypoint_object(
+ nextdownbf16
+ SRCS
+ nextdownbf16.cpp
+ HDRS
+ ../nextdownbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
nextup
SRCS
@@ -3641,6 +3683,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.manipulation_functions
)
+add_entrypoint_object(
+ nextupbf16
+ SRCS
+ nextupbf16.cpp
+ HDRS
+ ../nextupbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
fmod
SRCS
diff --git a/libc/src/math/generic/nextafterbf16.cpp b/libc/src/math/generic/nextafterbf16.cpp
new file mode 100644
index 0000000000000..e21a2dcb3d664
--- /dev/null
+++ b/libc/src/math/generic/nextafterbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of nextafterbf16 function --------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/nextafterbf16.h"
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, nextafterbf16, (bfloat16 x, bfloat16 y)) {
+ return fputil::nextafter(x, y);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/nextdownbf16.cpp b/libc/src/math/generic/nextdownbf16.cpp
new file mode 100644
index 0000000000000..2115df95ff072
--- /dev/null
+++ b/libc/src/math/generic/nextdownbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of nextdownbf16 function ---------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/nextdownbf16.h"
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, nextdownbf16, (bfloat16 x)) {
+ return fputil::nextupdown</*IsDown=*/true>(x);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/nexttowardbf16.cpp b/libc/src/math/generic/nexttowardbf16.cpp
new file mode 100644
index 0000000000000..3deab87575939
--- /dev/null
+++ b/libc/src/math/generic/nexttowardbf16.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of nexttowardbf16 function -------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/nexttowardbf16.h"
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, nexttowardbf16, (bfloat16 x, long double y)) {
+ // nextafter<T, U> where T != U is nexttoward
+ return fputil::nextafter(x, y);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/nextupbf16.cpp b/libc/src/math/generic/nextupbf16.cpp
new file mode 100644
index 0000000000000..147ce37477d9f
--- /dev/null
+++ b/libc/src/math/generic/nextupbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of nextupbf16 function -----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/nextupbf16.h"
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, nextupbf16, (bfloat16 x)) {
+ return fputil::nextupdown</*IsDown=*/false>(x);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/nextafterbf16.h b/libc/src/math/nextafterbf16.h
new file mode 100644
index 0000000000000..f962c7c51e5cd
--- /dev/null
+++ b/libc/src/math/nextafterbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for nextafterbf16 -----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_NEXTAFTERBF16_H
+#define LLVM_LIBC_SRC_MATH_NEXTAFTERBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 nextafterbf16(bfloat16 x, bfloat16 y);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_NEXTAFTERBF16_H
diff --git a/libc/src/math/nextdownbf16.h b/libc/src/math/nextdownbf16.h
new file mode 100644
index 0000000000000..36b0cd7cb9626
--- /dev/null
+++ b/libc/src/math/nextdownbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for nextdownbf16 ------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_NEXTDOWNBF16_H
+#define LLVM_LIBC_SRC_MATH_NEXTDOWNBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 nextdownbf16(bfloat16 x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_NEXTDOWNBF16_H
diff --git a/libc/src/math/nexttowardbf16.h b/libc/src/math/nexttowardbf16.h
new file mode 100644
index 0000000000000..930abf858ef51
--- /dev/null
+++ b/libc/src/math/nexttowardbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for nexttowardbf16 ----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_NEXTTOWARDBF16_H
+#define LLVM_LIBC_SRC_MATH_NEXTTOWARDBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 nexttowardbf16(bfloat16 x, long double y);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_NEXTTOWARDBF16_H
diff --git a/libc/src/math/nextupbf16.h b/libc/src/math/nextupbf16.h
new file mode 100644
index 0000000000000..872de84338d95
--- /dev/null
+++ b/libc/src/math/nextupbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for nextupbf16 --------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_NEXTUPBF16_H
+#define LLVM_LIBC_SRC_MATH_NEXTUPBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 nextupbf16(bfloat16 x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_NEXTUPBF16_H
>From 446e63718e21f90dbfea74dcbc699c1f4c08334c Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 06:00:01 +0530
Subject: [PATCH 06/17] chore: add smoke tests for
next{after,down,toward,up}bf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/test/src/math/smoke/CMakeLists.txt | 52 +++++++++++++++++++
libc/test/src/math/smoke/NextAfterTest.h | 43 ++++++++-------
libc/test/src/math/smoke/NextTowardTest.h | 4 +-
.../src/math/smoke/nextafterbf16_test.cpp | 14 +++++
.../test/src/math/smoke/nextdownbf16_test.cpp | 14 +++++
.../src/math/smoke/nexttowardbf16_test.cpp | 14 +++++
libc/test/src/math/smoke/nextupbf16_test.cpp | 14 +++++
7 files changed, 133 insertions(+), 22 deletions(-)
create mode 100644 libc/test/src/math/smoke/nextafterbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/nextdownbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/nexttowardbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/nextupbf16_test.cpp
diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index 694467e19d47c..40481a711bade 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -3660,6 +3660,19 @@ add_fp_unittest(
libc.src.__support.FPUtil.fp_bits
)
+add_fp_unittest(
+ nextafterbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ nextafterbf16_test.cpp
+ HDRS
+ NextUpTest.h
+ DEPENDS
+ libc.src.math.nextafterbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
# FIXME: These tests are currently spurious for the GPU.
if(NOT LIBC_TARGET_OS_IS_GPU)
add_fp_unittest(
@@ -3727,6 +3740,19 @@ add_fp_unittest(
libc.src.__support.FPUtil.fp_bits
)
+add_fp_unittest(
+ nexttowardbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ nexttowardbf16_test.cpp
+ HDRS
+ NextUpTest.h
+ DEPENDS
+ libc.src.math.nexttowardbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
nextdown_test
SUITE
@@ -3787,6 +3813,19 @@ add_fp_unittest(
libc.src.math.nextdownf128
)
+add_fp_unittest(
+ nextdownbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ nextdownbf16_test.cpp
+ HDRS
+ NextUpTest.h
+ DEPENDS
+ libc.src.math.nextdownbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
nextup_test
SUITE
@@ -3847,6 +3886,19 @@ add_fp_unittest(
libc.src.math.nextupf128
)
+add_fp_unittest(
+ nextupbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ nextupbf16_test.cpp
+ HDRS
+ NextUpTest.h
+ DEPENDS
+ libc.src.math.nextupbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
# TODO(lntue): The current implementation of fputil::general::fma<float> is only
# correctly rounded for the default rounding mode round-to-nearest tie-to-even.
add_fp_unittest(
diff --git a/libc/test/src/math/smoke/NextAfterTest.h b/libc/test/src/math/smoke/NextAfterTest.h
index be27c9f188a72..b7e59f7cd8cfd 100644
--- a/libc/test/src/math/smoke/NextAfterTest.h
+++ b/libc/test/src/math/smoke/NextAfterTest.h
@@ -12,6 +12,7 @@
#include "src/__support/CPP/bit.h"
#include "src/__support/FPUtil/FEnvImpl.h"
#include "src/__support/FPUtil/FPBits.h"
+#include "src/__support/sign.h"
#include "test/UnitTest/FEnvSafeTest.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
@@ -42,6 +43,8 @@ class NextAfterTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
const T neg_inf = FPBits::inf(Sign::NEG).get_val();
const T zero = FPBits::zero(Sign::POS).get_val();
const T neg_zero = FPBits::zero(Sign::NEG).get_val();
+ const T one = FPBits::one(Sign::POS).get_val();
+ const T neg_one = FPBits::one(Sign::NEG).get_val();
const T nan = FPBits::quiet_nan().get_val();
static constexpr StorageType min_subnormal =
@@ -55,8 +58,8 @@ class NextAfterTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
typedef T (*NextAfterFunc)(T, T);
void testNaN(NextAfterFunc func) {
- ASSERT_FP_EQ(func(nan, 0), nan);
- ASSERT_FP_EQ(func(0, nan), nan);
+ ASSERT_FP_EQ(func(nan, zero), nan);
+ ASSERT_FP_EQ(func(zero, nan), nan);
}
void testBoundaries(NextAfterFunc func) {
@@ -65,68 +68,68 @@ class NextAfterTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
// 'from' is zero|neg_zero.
T x = zero;
- T result = func(x, T(1));
+ T result = func(x, one);
StorageType expected_bits = 1;
T expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
- result = func(x, T(-1));
+ result = func(x, neg_one);
expected_bits = FPBits::SIGN_MASK + 1;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
x = neg_zero;
- result = func(x, 1);
+ result = func(x, one);
expected_bits = 1;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
- result = func(x, -1);
+ result = func(x, neg_one);
expected_bits = FPBits::SIGN_MASK + 1;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
// 'from' is max subnormal value.
x = LIBC_NAMESPACE::cpp::bit_cast<T>(max_subnormal);
- result = func(x, 1);
+ result = func(x, one);
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(min_normal);
ASSERT_FP_EQ(result, expected);
- result = func(x, 0);
+ result = func(x, zero);
expected_bits = max_subnormal - 1;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
x = -x;
- result = func(x, -1);
+ result = func(x, neg_one);
expected_bits = FPBits::SIGN_MASK + min_normal;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ(result, expected);
- result = func(x, 0);
+ result = func(x, zero);
expected_bits = FPBits::SIGN_MASK + max_subnormal - 1;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
// 'from' is min subnormal value.
x = LIBC_NAMESPACE::cpp::bit_cast<T>(min_subnormal);
- result = func(x, 1);
+ result = func(x, one);
expected_bits = min_subnormal + 1;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
- ASSERT_FP_EQ_WITH_UNDERFLOW(func(x, 0), zero);
+ ASSERT_FP_EQ_WITH_UNDERFLOW(func(x, zero), zero);
x = -x;
- result = func(x, -1);
+ result = func(x, neg_one);
expected_bits = FPBits::SIGN_MASK + min_subnormal + 1;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
- ASSERT_FP_EQ_WITH_UNDERFLOW(func(x, 0), T(-0.0));
+ ASSERT_FP_EQ_WITH_UNDERFLOW(func(x, zero), neg_zero);
// 'from' is min normal.
x = LIBC_NAMESPACE::cpp::bit_cast<T>(min_normal);
- result = func(x, 0);
+ result = func(x, zero);
expected_bits = max_subnormal;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
@@ -137,7 +140,7 @@ class NextAfterTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
ASSERT_FP_EQ(result, expected);
x = -x;
- result = func(x, 0);
+ result = func(x, zero);
expected_bits = FPBits::SIGN_MASK + max_subnormal;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ_WITH_UNDERFLOW(result, expected);
@@ -157,14 +160,14 @@ class NextAfterTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
// 'from' is infinity.
x = inf;
- result = func(x, 0);
+ result = func(x, zero);
expected_bits = max_normal;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ(result, expected);
ASSERT_FP_EQ(func(x, inf), inf);
x = neg_inf;
- result = func(x, 0);
+ result = func(x, zero);
expected_bits = FPBits::SIGN_MASK + max_normal;
expected = LIBC_NAMESPACE::cpp::bit_cast<T>(expected_bits);
ASSERT_FP_EQ(result, expected);
@@ -172,7 +175,7 @@ class NextAfterTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
// 'from' is a power of 2.
x = T(32.0);
- result = func(x, 0);
+ result = func(x, zero);
FPBits x_bits = FPBits(x);
FPBits result_bits = FPBits(result);
ASSERT_EQ(result_bits.get_biased_exponent(),
@@ -187,7 +190,7 @@ class NextAfterTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
x = -x;
- result = func(x, 0);
+ result = func(x, zero);
result_bits = FPBits(result);
ASSERT_EQ(result_bits.get_biased_exponent(),
uint16_t(x_bits.get_biased_exponent() - 1));
diff --git a/libc/test/src/math/smoke/NextTowardTest.h b/libc/test/src/math/smoke/NextTowardTest.h
index d2f352cdcbdf7..43e71c6a2d8f6 100644
--- a/libc/test/src/math/smoke/NextTowardTest.h
+++ b/libc/test/src/math/smoke/NextTowardTest.h
@@ -62,8 +62,8 @@ class NextTowardTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
typedef T (*NextTowardFunc)(T, long double);
void testNaN(NextTowardFunc func) {
- ASSERT_FP_EQ(func(nan, 0), nan);
- ASSERT_FP_EQ(func(0, to_nan), nan);
+ ASSERT_FP_EQ(func(nan, to_zero), nan);
+ ASSERT_FP_EQ(func(zero, to_nan), nan);
}
void testBoundaries(NextTowardFunc func) {
diff --git a/libc/test/src/math/smoke/nextafterbf16_test.cpp b/libc/test/src/math/smoke/nextafterbf16_test.cpp
new file mode 100644
index 0000000000000..b73a3cbef0b74
--- /dev/null
+++ b/libc/test/src/math/smoke/nextafterbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for nextafterbf16 ---------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "NextAfterTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/nextafterbf16.h"
+
+LIST_NEXTAFTER_TESTS(bfloat16, LIBC_NAMESPACE::nextafterbf16)
diff --git a/libc/test/src/math/smoke/nextdownbf16_test.cpp b/libc/test/src/math/smoke/nextdownbf16_test.cpp
new file mode 100644
index 0000000000000..300206461e2de
--- /dev/null
+++ b/libc/test/src/math/smoke/nextdownbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for nextdownbf16 ----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "NextDownTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/nextdownbf16.h"
+
+LIST_NEXTDOWN_TESTS(bfloat16, LIBC_NAMESPACE::nextdownbf16)
diff --git a/libc/test/src/math/smoke/nexttowardbf16_test.cpp b/libc/test/src/math/smoke/nexttowardbf16_test.cpp
new file mode 100644
index 0000000000000..c1f35fcb96ef6
--- /dev/null
+++ b/libc/test/src/math/smoke/nexttowardbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for nexttowardbf16 --------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "NextTowardTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/nexttowardbf16.h"
+
+LIST_NEXTTOWARD_TESTS(bfloat16, LIBC_NAMESPACE::nexttowardbf16)
diff --git a/libc/test/src/math/smoke/nextupbf16_test.cpp b/libc/test/src/math/smoke/nextupbf16_test.cpp
new file mode 100644
index 0000000000000..49ad2f70b12a8
--- /dev/null
+++ b/libc/test/src/math/smoke/nextupbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for nextupbf16 ------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "NextUpTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/nextupbf16.h"
+
+LIST_NEXTUP_TESTS(bfloat16, LIBC_NAMESPACE::nextupbf16)
>From a98b9281d87906165b1b7ade5591335dcba0efc5 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 06:00:15 +0530
Subject: [PATCH 07/17] chore: update entrypoints
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/config/baremetal/aarch64/entrypoints.txt | 4 ++++
libc/config/baremetal/arm/entrypoints.txt | 4 ++++
libc/config/baremetal/riscv/entrypoints.txt | 4 ++++
libc/config/darwin/aarch64/entrypoints.txt | 4 ++++
libc/config/darwin/x86_64/entrypoints.txt | 4 ++++
libc/config/gpu/amdgpu/entrypoints.txt | 4 ++++
libc/config/gpu/nvptx/entrypoints.txt | 4 ++++
libc/config/linux/aarch64/entrypoints.txt | 4 ++++
libc/config/linux/arm/entrypoints.txt | 4 ++++
libc/config/linux/riscv/entrypoints.txt | 4 ++++
libc/config/linux/x86_64/entrypoints.txt | 4 ++++
libc/config/windows/entrypoints.txt | 4 ++++
12 files changed, 48 insertions(+)
diff --git a/libc/config/baremetal/aarch64/entrypoints.txt b/libc/config/baremetal/aarch64/entrypoints.txt
index c2710429b3cfd..26ee82d99192f 100644
--- a/libc/config/baremetal/aarch64/entrypoints.txt
+++ b/libc/config/baremetal/aarch64/entrypoints.txt
@@ -787,6 +787,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index 6e5389d542f80..00025d324fc2c 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -790,6 +790,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 76da24d2cc876..c0ab0cf903c41 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -790,6 +790,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index 5bfd6c863fabb..cd81756770ed4 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -620,6 +620,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/darwin/x86_64/entrypoints.txt b/libc/config/darwin/x86_64/entrypoints.txt
index 27d214d06cd0b..3aa54e027a42d 100644
--- a/libc/config/darwin/x86_64/entrypoints.txt
+++ b/libc/config/darwin/x86_64/entrypoints.txt
@@ -263,6 +263,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/gpu/amdgpu/entrypoints.txt b/libc/config/gpu/amdgpu/entrypoints.txt
index bc75956738e5a..3b42c0fd71547 100644
--- a/libc/config/gpu/amdgpu/entrypoints.txt
+++ b/libc/config/gpu/amdgpu/entrypoints.txt
@@ -646,6 +646,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/gpu/nvptx/entrypoints.txt b/libc/config/gpu/nvptx/entrypoints.txt
index c9688284df16c..b569327409849 100644
--- a/libc/config/gpu/nvptx/entrypoints.txt
+++ b/libc/config/gpu/nvptx/entrypoints.txt
@@ -647,6 +647,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index e42bbb14ec119..4058e7155f34a 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -874,6 +874,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index 60fc953c2b9f4..9002bd12d6733 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -490,6 +490,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index 1a03683d72e61..77d5bae188a3c 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -893,6 +893,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 9b4946b883626..b811fe79c174d 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -925,6 +925,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index b97e893567038..ec2fde253e898 100644
--- a/libc/config/windows/entrypoints.txt
+++ b/libc/config/windows/entrypoints.txt
@@ -336,6 +336,10 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.nextafterbf16
+ libc.src.math.nextdownbf16
+ libc.src.math.nexttowardbf16
+ libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
libc.src.math.truncbf16
>From 12f1923f5e1e3681a203f546aeefaaa38ea3fe58 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 06:00:38 +0530
Subject: [PATCH 08/17] docs: add next{after,down,toward,up}bf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/docs/headers/math/index.rst | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/libc/docs/headers/math/index.rst b/libc/docs/headers/math/index.rst
index 754c1a55cf449..591295659c3d4 100644
--- a/libc/docs/headers/math/index.rst
+++ b/libc/docs/headers/math/index.rst
@@ -215,13 +215,13 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| nearbyint | |check| | |check| | |check| | |check| | |check| | | 7.12.9.3 | F.10.6.3 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| nextafter | |check| | |check| | |check| | |check| | |check| | | 7.12.11.3 | F.10.8.3 |
+| nextafter | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.11.3 | F.10.8.3 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| nextdown | |check| | |check| | |check| | |check| | |check| | | 7.12.11.6 | F.10.8.6 |
+| nextdown | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.11.6 | F.10.8.6 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| nexttoward | |check| | |check| | |check| | |check| | N/A | | 7.12.11.4 | F.10.8.4 |
+| nexttoward | |check| | |check| | |check| | |check| | N/A | |check| | 7.12.11.4 | F.10.8.4 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| nextup | |check| | |check| | |check| | |check| | |check| | | 7.12.11.5 | F.10.8.5 |
+| nextup | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.11.5 | F.10.8.5 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| remainder | |check| | |check| | |check| | |check| | |check| | | 7.12.10.2 | F.10.7.2 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
>From 6f8d84d83beff959e838c70057f2e4bb29f0bc4c Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 08:09:15 +0530
Subject: [PATCH 09/17] feat: implement {get,set}payloadbf16 and
setpayloadsigbf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/math/CMakeLists.txt | 3 ++
libc/src/math/generic/CMakeLists.txt | 42 +++++++++++++++++++++
libc/src/math/generic/getpayloadbf16.cpp | 21 +++++++++++
libc/src/math/generic/setpayloadbf16.cpp | 21 +++++++++++
libc/src/math/generic/setpayloadsigbf16.cpp | 21 +++++++++++
libc/src/math/getpayloadbf16.h | 21 +++++++++++
libc/src/math/setpayloadbf16.h | 21 +++++++++++
libc/src/math/setpayloadsigbf16.h | 21 +++++++++++
8 files changed, 171 insertions(+)
create mode 100644 libc/src/math/generic/getpayloadbf16.cpp
create mode 100644 libc/src/math/generic/setpayloadbf16.cpp
create mode 100644 libc/src/math/generic/setpayloadsigbf16.cpp
create mode 100644 libc/src/math/getpayloadbf16.h
create mode 100644 libc/src/math/setpayloadbf16.h
create mode 100644 libc/src/math/setpayloadsigbf16.h
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 3843247c4fa5b..023829b21996f 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -330,6 +330,7 @@ add_math_entrypoint_object(getpayloadf)
add_math_entrypoint_object(getpayloadl)
add_math_entrypoint_object(getpayloadf16)
add_math_entrypoint_object(getpayloadf128)
+add_math_entrypoint_object(getpayloadbf16)
add_math_entrypoint_object(hypot)
add_math_entrypoint_object(hypotf)
@@ -507,12 +508,14 @@ add_math_entrypoint_object(setpayloadf)
add_math_entrypoint_object(setpayloadl)
add_math_entrypoint_object(setpayloadf16)
add_math_entrypoint_object(setpayloadf128)
+add_math_entrypoint_object(setpayloadbf16)
add_math_entrypoint_object(setpayloadsig)
add_math_entrypoint_object(setpayloadsigf)
add_math_entrypoint_object(setpayloadsigl)
add_math_entrypoint_object(setpayloadsigf16)
add_math_entrypoint_object(setpayloadsigf128)
+add_math_entrypoint_object(setpayloadsigbf16)
add_math_entrypoint_object(sincos)
add_math_entrypoint_object(sincosf)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 822da74d7597e..38ba34ae521ea 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -4609,6 +4609,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.basic_operations
)
+add_entrypoint_object(
+ getpayloadbf16
+ SRCS
+ getpayloadbf16.cpp
+ HDRS
+ ../getpayloadbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
setpayload
SRCS
@@ -4661,6 +4675,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.basic_operations
)
+add_entrypoint_object(
+ setpayloadbf16
+ SRCS
+ setpayloadbf16.cpp
+ HDRS
+ ../setpayloadbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
setpayloadsig
SRCS
@@ -4713,6 +4741,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.basic_operations
)
+add_entrypoint_object(
+ setpayloadsigbf16
+ SRCS
+ setpayloadsigbf16.cpp
+ HDRS
+ ../setpayloadsigbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+)
+
add_entrypoint_object(
f16add
SRCS
diff --git a/libc/src/math/generic/getpayloadbf16.cpp b/libc/src/math/generic/getpayloadbf16.cpp
new file mode 100644
index 0000000000000..544ed0a2f5c9d
--- /dev/null
+++ b/libc/src/math/generic/getpayloadbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of getpayloadbf16 function -------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/getpayloadbf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, getpayloadbf16, (const bfloat16 *x)) {
+ return fputil::getpayload(*x);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/setpayloadbf16.cpp b/libc/src/math/generic/setpayloadbf16.cpp
new file mode 100644
index 0000000000000..49f9b9cabd6a2
--- /dev/null
+++ b/libc/src/math/generic/setpayloadbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of setpayloadbf16 function -------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/setpayloadbf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(int, setpayloadbf16, (bfloat16 * res, bfloat16 pl)) {
+ return static_cast<int>(fputil::setpayload</*IsSignaling=*/false>(*res, pl));
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/setpayloadsigbf16.cpp b/libc/src/math/generic/setpayloadsigbf16.cpp
new file mode 100644
index 0000000000000..7a2b7c7dc66dd
--- /dev/null
+++ b/libc/src/math/generic/setpayloadsigbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of setpayloadsigbf16 function ----------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/setpayloadsigbf16.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(int, setpayloadsigbf16, (bfloat16 * res, bfloat16 pl)) {
+ return static_cast<int>(fputil::setpayload</*IsSignaling=*/true>(*res, pl));
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/getpayloadbf16.h b/libc/src/math/getpayloadbf16.h
new file mode 100644
index 0000000000000..e4767f0728139
--- /dev/null
+++ b/libc/src/math/getpayloadbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for getpayloadbf16 ----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_GETPAYLOADBF16_H
+#define LLVM_LIBC_SRC_MATH_GETPAYLOADBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 getpayloadbf16(const bfloat16 *x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_GETPAYLOADBF16_H
diff --git a/libc/src/math/setpayloadbf16.h b/libc/src/math/setpayloadbf16.h
new file mode 100644
index 0000000000000..e3a60b2f2e021
--- /dev/null
+++ b/libc/src/math/setpayloadbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for setpayloadbf16 ----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_SETPAYLOADBF16_H
+#define LLVM_LIBC_SRC_MATH_SETPAYLOADBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int setpayloadbf16(bfloat16 *res, bfloat16 pl);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_SETPAYLOADBF16_H
diff --git a/libc/src/math/setpayloadsigbf16.h b/libc/src/math/setpayloadsigbf16.h
new file mode 100644
index 0000000000000..5baba95b45758
--- /dev/null
+++ b/libc/src/math/setpayloadsigbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for setpayloadsigbf16 -------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_SETPAYLOADSIGBF16_H
+#define LLVM_LIBC_SRC_MATH_SETPAYLOADSIGBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int setpayloadsigbf16(bfloat16 *res, bfloat16 pl);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_SETPAYLOADSIGBF16_H
>From c8f43800a59a3777c74545484bb337523b9b2a26 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 08:09:51 +0530
Subject: [PATCH 10/17] chore: implement smoke tests for {get,set}payloadbf16
and setpayloadsigbf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/test/src/math/smoke/CMakeLists.txt | 38 ++++++++++++
libc/test/src/math/smoke/GetPayloadTest.h | 61 +++++++++++++------
libc/test/src/math/smoke/SetPayloadSigTest.h | 34 ++++++++---
libc/test/src/math/smoke/SetPayloadTest.h | 34 ++++++++---
.../src/math/smoke/getpayloadbf16_test.cpp | 14 +++++
.../src/math/smoke/setpayloadbf16_test.cpp | 14 +++++
.../src/math/smoke/setpayloadsigbf16_test.cpp | 14 +++++
7 files changed, 174 insertions(+), 35 deletions(-)
create mode 100644 libc/test/src/math/smoke/getpayloadbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/setpayloadbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/setpayloadsigbf16_test.cpp
diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index 40481a711bade..8c257664dd8d7 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -4853,6 +4853,19 @@ add_fp_unittest(
libc.src.math.getpayloadf128
)
+add_fp_unittest(
+ getpayloadbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ getpayloadbf16_test.cpp
+ HDRS
+ GetPayloadTest.h
+ DEPENDS
+ libc.src.math.getpayloadbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
setpayload_test
SUITE
@@ -4913,6 +4926,19 @@ add_fp_unittest(
libc.src.math.setpayloadf128
)
+add_fp_unittest(
+ setpayloadbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ setpayloadbf16_test.cpp
+ HDRS
+ SetPayloadTest.h
+ DEPENDS
+ libc.src.math.setpayloadbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
setpayloadsig_test
SUITE
@@ -4973,6 +4999,18 @@ add_fp_unittest(
libc.src.math.setpayloadsigf128
)
+add_fp_unittest(
+ setpayloadsigbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ setpayloadsigbf16_test.cpp
+ HDRS
+ SetPayloadTest.h
+ DEPENDS
+ libc.src.math.setpayloadsigbf16
+ libc.src.__support.FPUtil.bfloat16
+)
add_fp_unittest(
f16add_test
diff --git a/libc/test/src/math/smoke/GetPayloadTest.h b/libc/test/src/math/smoke/GetPayloadTest.h
index 1b1bf4f5d56ff..486ea42bf50c1 100644
--- a/libc/test/src/math/smoke/GetPayloadTest.h
+++ b/libc/test/src/math/smoke/GetPayloadTest.h
@@ -51,23 +51,50 @@ class GetPayloadTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_FP_EQ(default_snan_payload, funcWrapper(func, sNaN));
EXPECT_FP_EQ(default_snan_payload, funcWrapper(func, neg_sNaN));
- T qnan_42 = FPBits::quiet_nan(Sign::POS, 0x42).get_val();
- T neg_qnan_42 = FPBits::quiet_nan(Sign::NEG, 0x42).get_val();
- T snan_42 = FPBits::signaling_nan(Sign::POS, 0x42).get_val();
- T neg_snan_42 = FPBits::signaling_nan(Sign::NEG, 0x42).get_val();
- EXPECT_FP_EQ(T(0x42.0p+0), funcWrapper(func, qnan_42));
- EXPECT_FP_EQ(T(0x42.0p+0), funcWrapper(func, neg_qnan_42));
- EXPECT_FP_EQ(T(0x42.0p+0), funcWrapper(func, snan_42));
- EXPECT_FP_EQ(T(0x42.0p+0), funcWrapper(func, neg_snan_42));
-
- T qnan_123 = FPBits::quiet_nan(Sign::POS, 0x123).get_val();
- T neg_qnan_123 = FPBits::quiet_nan(Sign::NEG, 0x123).get_val();
- T snan_123 = FPBits::signaling_nan(Sign::POS, 0x123).get_val();
- T neg_snan_123 = FPBits::signaling_nan(Sign::NEG, 0x123).get_val();
- EXPECT_FP_EQ(T(0x123.0p+0), funcWrapper(func, qnan_123));
- EXPECT_FP_EQ(T(0x123.0p+0), funcWrapper(func, neg_qnan_123));
- EXPECT_FP_EQ(T(0x123.0p+0), funcWrapper(func, snan_123));
- EXPECT_FP_EQ(T(0x123.0p+0), funcWrapper(func, neg_snan_123));
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 6) {
+ // [S] [E..E] [QM..M] -> number of M bits should be at least 6
+ // 0x31 = 0b110001 = 6 bits
+ T qnan_31 = FPBits::quiet_nan(Sign::POS, 0x31).get_val();
+ T neg_qnan_31 = FPBits::quiet_nan(Sign::NEG, 0x31).get_val();
+ T snan_31 = FPBits::signaling_nan(Sign::POS, 0x31).get_val();
+ T neg_snan_31 = FPBits::signaling_nan(Sign::NEG, 0x31).get_val();
+ EXPECT_FP_EQ(T(0x31.0p+0), funcWrapper(func, qnan_31));
+ EXPECT_FP_EQ(T(0x31.0p+0), funcWrapper(func, neg_qnan_31));
+ EXPECT_FP_EQ(T(0x31.0p+0), funcWrapper(func, snan_31));
+ EXPECT_FP_EQ(T(0x31.0p+0), funcWrapper(func, neg_snan_31));
+
+ // 0x15 = 0b10101 = 5 bits
+ T qnan_15 = FPBits::quiet_nan(Sign::POS, 0x15).get_val();
+ T neg_qnan_15 = FPBits::quiet_nan(Sign::NEG, 0x15).get_val();
+ T snan_15 = FPBits::signaling_nan(Sign::POS, 0x15).get_val();
+ T neg_snan_15 = FPBits::signaling_nan(Sign::NEG, 0x15).get_val();
+ EXPECT_FP_EQ(T(0x15.0p+0), funcWrapper(func, qnan_15));
+ EXPECT_FP_EQ(T(0x15.0p+0), funcWrapper(func, neg_qnan_15));
+ EXPECT_FP_EQ(T(0x15.0p+0), funcWrapper(func, snan_15));
+ EXPECT_FP_EQ(T(0x15.0p+0), funcWrapper(func, neg_snan_15));
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 7) {
+ T qnan_42 = FPBits::quiet_nan(Sign::POS, 0x42).get_val();
+ T neg_qnan_42 = FPBits::quiet_nan(Sign::NEG, 0x42).get_val();
+ T snan_42 = FPBits::signaling_nan(Sign::POS, 0x42).get_val();
+ T neg_snan_42 = FPBits::signaling_nan(Sign::NEG, 0x42).get_val();
+ EXPECT_FP_EQ(T(0x42.0p+0), funcWrapper(func, qnan_42));
+ EXPECT_FP_EQ(T(0x42.0p+0), funcWrapper(func, neg_qnan_42));
+ EXPECT_FP_EQ(T(0x42.0p+0), funcWrapper(func, snan_42));
+ EXPECT_FP_EQ(T(0x42.0p+0), funcWrapper(func, neg_snan_42));
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 9) {
+ T qnan_123 = FPBits::quiet_nan(Sign::POS, 0x123).get_val();
+ T neg_qnan_123 = FPBits::quiet_nan(Sign::NEG, 0x123).get_val();
+ T snan_123 = FPBits::signaling_nan(Sign::POS, 0x123).get_val();
+ T neg_snan_123 = FPBits::signaling_nan(Sign::NEG, 0x123).get_val();
+ EXPECT_FP_EQ(T(0x123.0p+0), funcWrapper(func, qnan_123));
+ EXPECT_FP_EQ(T(0x123.0p+0), funcWrapper(func, neg_qnan_123));
+ EXPECT_FP_EQ(T(0x123.0p+0), funcWrapper(func, snan_123));
+ EXPECT_FP_EQ(T(0x123.0p+0), funcWrapper(func, neg_snan_123));
+ }
}
};
diff --git a/libc/test/src/math/smoke/SetPayloadSigTest.h b/libc/test/src/math/smoke/SetPayloadSigTest.h
index f480479618a08..7b26c98b7ee35 100644
--- a/libc/test/src/math/smoke/SetPayloadSigTest.h
+++ b/libc/test/src/math/smoke/SetPayloadSigTest.h
@@ -54,15 +54,31 @@ class SetPayloadSigTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_EQ(FPBits::signaling_nan(Sign::POS, 1).uintval(),
FPBits(res).uintval());
- EXPECT_EQ(0, func(&res, T(0x42.0p+0)));
- EXPECT_TRUE(FPBits(res).is_signaling_nan());
- EXPECT_EQ(FPBits::signaling_nan(Sign::POS, 0x42).uintval(),
- FPBits(res).uintval());
-
- EXPECT_EQ(0, func(&res, T(0x123.0p+0)));
- EXPECT_TRUE(FPBits(res).is_signaling_nan());
- EXPECT_EQ(FPBits::signaling_nan(Sign::POS, 0x123).uintval(),
- FPBits(res).uintval());
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 6) {
+ EXPECT_EQ(0, func(&res, T(0x31.0p+0)));
+ EXPECT_TRUE(FPBits(res).is_signaling_nan());
+ EXPECT_EQ(FPBits::signaling_nan(Sign::POS, 0x31).uintval(),
+ FPBits(res).uintval());
+
+ EXPECT_EQ(0, func(&res, T(0x15.0p+0)));
+ EXPECT_TRUE(FPBits(res).is_signaling_nan());
+ EXPECT_EQ(FPBits::signaling_nan(Sign::POS, 0x15).uintval(),
+ FPBits(res).uintval());
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 7) {
+ EXPECT_EQ(0, func(&res, T(0x42.0p+0)));
+ EXPECT_TRUE(FPBits(res).is_signaling_nan());
+ EXPECT_EQ(FPBits::signaling_nan(Sign::POS, 0x42).uintval(),
+ FPBits(res).uintval());
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 9) {
+ EXPECT_EQ(0, func(&res, T(0x123.0p+0)));
+ EXPECT_TRUE(FPBits(res).is_signaling_nan());
+ EXPECT_EQ(FPBits::signaling_nan(Sign::POS, 0x123).uintval(),
+ FPBits(res).uintval());
+ }
FPBits nan_payload_bits = FPBits::one();
nan_payload_bits.set_biased_exponent(FPBits::FRACTION_LEN - 2 +
diff --git a/libc/test/src/math/smoke/SetPayloadTest.h b/libc/test/src/math/smoke/SetPayloadTest.h
index 9ede5678fef1b..6aff47ab60a99 100644
--- a/libc/test/src/math/smoke/SetPayloadTest.h
+++ b/libc/test/src/math/smoke/SetPayloadTest.h
@@ -54,15 +54,31 @@ class SetPayloadTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
EXPECT_TRUE(FPBits(res).is_quiet_nan());
EXPECT_EQ(FPBits::quiet_nan(Sign::POS, 1).uintval(), FPBits(res).uintval());
- EXPECT_EQ(0, func(&res, T(0x42.0p+0)));
- EXPECT_TRUE(FPBits(res).is_quiet_nan());
- EXPECT_EQ(FPBits::quiet_nan(Sign::POS, 0x42).uintval(),
- FPBits(res).uintval());
-
- EXPECT_EQ(0, func(&res, T(0x123.0p+0)));
- EXPECT_TRUE(FPBits(res).is_quiet_nan());
- EXPECT_EQ(FPBits::quiet_nan(Sign::POS, 0x123).uintval(),
- FPBits(res).uintval());
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 6) {
+ EXPECT_EQ(0, func(&res, T(0x31.0p+0)));
+ EXPECT_TRUE(FPBits(res).is_quiet_nan());
+ EXPECT_EQ(FPBits::quiet_nan(Sign::POS, 0x31).uintval(),
+ FPBits(res).uintval());
+
+ EXPECT_EQ(0, func(&res, T(0x15.0p+0)));
+ EXPECT_TRUE(FPBits(res).is_quiet_nan());
+ EXPECT_EQ(FPBits::quiet_nan(Sign::POS, 0x15).uintval(),
+ FPBits(res).uintval());
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 7) {
+ EXPECT_EQ(0, func(&res, T(0x42.0p+0)));
+ EXPECT_TRUE(FPBits(res).is_quiet_nan());
+ EXPECT_EQ(FPBits::quiet_nan(Sign::POS, 0x42).uintval(),
+ FPBits(res).uintval());
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 9) {
+ EXPECT_EQ(0, func(&res, T(0x123.0p+0)));
+ EXPECT_TRUE(FPBits(res).is_quiet_nan());
+ EXPECT_EQ(FPBits::quiet_nan(Sign::POS, 0x123).uintval(),
+ FPBits(res).uintval());
+ }
// The following code is creating a NaN payload manually to prevent a
// conversion from BigInt to float128.
diff --git a/libc/test/src/math/smoke/getpayloadbf16_test.cpp b/libc/test/src/math/smoke/getpayloadbf16_test.cpp
new file mode 100644
index 0000000000000..51a5fad88cd97
--- /dev/null
+++ b/libc/test/src/math/smoke/getpayloadbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for getpayloadbf16 --------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "GetPayloadTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/getpayloadbf16.h"
+
+LIST_GETPAYLOAD_TESTS(bfloat16, LIBC_NAMESPACE::getpayloadbf16)
diff --git a/libc/test/src/math/smoke/setpayloadbf16_test.cpp b/libc/test/src/math/smoke/setpayloadbf16_test.cpp
new file mode 100644
index 0000000000000..198b454ed78b0
--- /dev/null
+++ b/libc/test/src/math/smoke/setpayloadbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for setpayloadbf16 --------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "SetPayloadTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/setpayloadbf16.h"
+
+LIST_SETPAYLOAD_TESTS(bfloat16, LIBC_NAMESPACE::setpayloadbf16)
diff --git a/libc/test/src/math/smoke/setpayloadsigbf16_test.cpp b/libc/test/src/math/smoke/setpayloadsigbf16_test.cpp
new file mode 100644
index 0000000000000..aa6a3e9dcbf2f
--- /dev/null
+++ b/libc/test/src/math/smoke/setpayloadsigbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for setpayloadsigbf16 -----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "SetPayloadSigTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/setpayloadsigbf16.h"
+
+LIST_SETPAYLOADSIG_TESTS(bfloat16, LIBC_NAMESPACE::setpayloadsigbf16)
>From 8ea93545572ba5a69d468e21d00b2be69d4c857c Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 08:11:23 +0530
Subject: [PATCH 11/17] fix: add correct static_cast for fputil::getpload for
bfloat16
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/__support/FPUtil/BasicOperations.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/libc/src/__support/FPUtil/BasicOperations.h b/libc/src/__support/FPUtil/BasicOperations.h
index 2357b053b60b8..994237ba8492e 100644
--- a/libc/src/__support/FPUtil/BasicOperations.h
+++ b/libc/src/__support/FPUtil/BasicOperations.h
@@ -354,7 +354,10 @@ LIBC_INLINE cpp::enable_if_t<cpp::is_floating_point_v<T>, T> getpayload(T x) {
return static_cast<T>(payload_dfloat);
} else {
- return static_cast<T>(payload);
+ if constexpr (cpp::is_same_v<T, bfloat16>)
+ return T(static_cast<int>(payload));
+ else
+ return static_cast<T>(payload);
}
}
>From fc2b6ebb84a27f07541d1922724b06cd9efe09cc Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 08:12:28 +0530
Subject: [PATCH 12/17] chore: update entrypoints
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/config/baremetal/aarch64/entrypoints.txt | 3 +++
libc/config/baremetal/arm/entrypoints.txt | 3 +++
libc/config/baremetal/riscv/entrypoints.txt | 3 +++
libc/config/darwin/aarch64/entrypoints.txt | 3 +++
libc/config/darwin/x86_64/entrypoints.txt | 3 +++
libc/config/gpu/amdgpu/entrypoints.txt | 3 +++
libc/config/gpu/nvptx/entrypoints.txt | 3 +++
libc/config/linux/aarch64/entrypoints.txt | 3 +++
libc/config/linux/arm/entrypoints.txt | 3 +++
libc/config/linux/riscv/entrypoints.txt | 3 +++
libc/config/linux/x86_64/entrypoints.txt | 3 +++
libc/config/windows/entrypoints.txt | 3 +++
12 files changed, 36 insertions(+)
diff --git a/libc/config/baremetal/aarch64/entrypoints.txt b/libc/config/baremetal/aarch64/entrypoints.txt
index 26ee82d99192f..5f72793beecb4 100644
--- a/libc/config/baremetal/aarch64/entrypoints.txt
+++ b/libc/config/baremetal/aarch64/entrypoints.txt
@@ -787,12 +787,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index 00025d324fc2c..244dd2e87b1fd 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -790,12 +790,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index c0ab0cf903c41..32980c4a1d222 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -790,12 +790,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index cd81756770ed4..3684713474cbc 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -620,12 +620,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/darwin/x86_64/entrypoints.txt b/libc/config/darwin/x86_64/entrypoints.txt
index 3aa54e027a42d..7482a80c37d33 100644
--- a/libc/config/darwin/x86_64/entrypoints.txt
+++ b/libc/config/darwin/x86_64/entrypoints.txt
@@ -263,12 +263,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/gpu/amdgpu/entrypoints.txt b/libc/config/gpu/amdgpu/entrypoints.txt
index 3b42c0fd71547..a88c74be2997a 100644
--- a/libc/config/gpu/amdgpu/entrypoints.txt
+++ b/libc/config/gpu/amdgpu/entrypoints.txt
@@ -646,12 +646,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/gpu/nvptx/entrypoints.txt b/libc/config/gpu/nvptx/entrypoints.txt
index b569327409849..08e6c7dc34b07 100644
--- a/libc/config/gpu/nvptx/entrypoints.txt
+++ b/libc/config/gpu/nvptx/entrypoints.txt
@@ -647,12 +647,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index 4058e7155f34a..ea7e2065b2216 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -874,12 +874,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index 9002bd12d6733..8f21976e9e88e 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -490,12 +490,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index 77d5bae188a3c..69d7519118198 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -893,12 +893,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index b811fe79c174d..75dcfd6382f1b 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -925,12 +925,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index ec2fde253e898..541d9fee1adf5 100644
--- a/libc/config/windows/entrypoints.txt
+++ b/libc/config/windows/entrypoints.txt
@@ -336,12 +336,15 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fminimum_numbf16
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
+ libc.src.math.getpayloadbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
libc.src.math.nextupbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.setpayloadbf16
+ libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
>From 70e4463400df96054520b1dd53a52860d96be929 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 08:12:59 +0530
Subject: [PATCH 13/17] docs: add {get,set}payloadbf16 and setpayloadsigbf16
math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/docs/headers/math/index.rst | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/libc/docs/headers/math/index.rst b/libc/docs/headers/math/index.rst
index 591295659c3d4..d8921b985b1f2 100644
--- a/libc/docs/headers/math/index.rst
+++ b/libc/docs/headers/math/index.rst
@@ -187,7 +187,7 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| fsub | N/A | |check| | |check| | N/A | |check|\* | N/A | 7.12.14.2 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| getpayload | |check| | |check| | |check| | |check| | |check| | | F.10.13.1 | N/A |
+| getpayload | |check| | |check| | |check| | |check| | |check| | |check| | F.10.13.1 | N/A |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| ilogb | |check| | |check| | |check| | |check| | |check| | | 7.12.6.8 | F.10.3.8 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
@@ -237,9 +237,9 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| scalbn | |check| | |check| | |check| | |check| | |check| | | 7.12.6.19 | F.10.3.19 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| setpayload | |check| | |check| | |check| | |check| | |check| | | F.10.13.2 | N/A |
+| setpayload | |check| | |check| | |check| | |check| | |check| | |check| | F.10.13.2 | N/A |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| setpayloadsig | |check| | |check| | |check| | |check| | |check| | | F.10.13.3 | N/A |
+| setpayloadsig | |check| | |check| | |check| | |check| | |check| | |check| | F.10.13.3 | N/A |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| totalorder | |check| | |check| | |check| | |check| | |check| | | F.10.12.1 | N/A |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
>From ea9625e60eb47e205c8acb8d9f4cabcd1959c8e6 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 08:42:17 +0530
Subject: [PATCH 14/17] feat: implement nanbf16 math function
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/math/CMakeLists.txt | 1 +
libc/src/math/generic/CMakeLists.txt | 16 ++++++++++++++++
libc/src/math/generic/nanbf16.cpp | 25 +++++++++++++++++++++++++
libc/src/math/nanbf16.h | 21 +++++++++++++++++++++
4 files changed, 63 insertions(+)
create mode 100644 libc/src/math/generic/nanbf16.cpp
create mode 100644 libc/src/math/nanbf16.h
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 023829b21996f..87a341bb6267b 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -420,6 +420,7 @@ add_math_entrypoint_object(nanf)
add_math_entrypoint_object(nanl)
add_math_entrypoint_object(nanf16)
add_math_entrypoint_object(nanf128)
+add_math_entrypoint_object(nanbf16)
add_math_entrypoint_object(nearbyint)
add_math_entrypoint_object(nearbyintf)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 38ba34ae521ea..e34e3f04ed8bd 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -3444,6 +3444,22 @@ add_entrypoint_object(
libc.src.errno.errno
)
+add_entrypoint_object(
+ nanbf16
+ SRCS
+ nanbf16.cpp
+ HDRS
+ ../nanbf16.h
+ DEPENDS
+ libc.src.errno.errno
+ libc.src.__support.common
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.libc_errno
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.str_to_float
+)
+
add_entrypoint_object(
nextafter
SRCS
diff --git a/libc/src/math/generic/nanbf16.cpp b/libc/src/math/generic/nanbf16.cpp
new file mode 100644
index 0000000000000..678dd6aed9ee3
--- /dev/null
+++ b/libc/src/math/generic/nanbf16.cpp
@@ -0,0 +1,25 @@
+//===-- Implementation of nanbf16 function --------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/nanbf16.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/libc_errno.h"
+#include "src/__support/macros/config.h"
+#include "src/__support/str_to_float.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, nanbf16, (const char *arg)) {
+ auto result = internal::strtonan<bfloat16>(arg);
+ if (result.has_error())
+ libc_errno = result.error;
+ return result.value;
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/nanbf16.h b/libc/src/math/nanbf16.h
new file mode 100644
index 0000000000000..1551044677768
--- /dev/null
+++ b/libc/src/math/nanbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for nanbf16 -----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_NANBF16_H
+#define LLVM_LIBC_SRC_MATH_NANBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 nanbf16(const char *arg);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_NANBF16_H
>From ae0e6165f51e45721fead6ba7af0adb29345b263 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 08:42:41 +0530
Subject: [PATCH 15/17] chore: add smoke tests for nanbf16 math function
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/test/src/math/smoke/CMakeLists.txt | 16 +++++++
libc/test/src/math/smoke/nanbf16_test.cpp | 55 +++++++++++++++++++++++
2 files changed, 71 insertions(+)
create mode 100644 libc/test/src/math/smoke/nanbf16_test.cpp
diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index 8c257664dd8d7..c26bd84e2ca9d 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -3515,6 +3515,22 @@ add_fp_unittest(
UNIT_TEST_ONLY
)
+add_fp_unittest(
+ nanbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ nanbf16_test.cpp
+ DEPENDS
+ libc.hdr.signal_macros
+ libc.src.math.nanbf16
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.fp_bits
+ # FIXME: The nan tests currently have death tests, which aren't supported for
+ # hermetic tests.
+ UNIT_TEST_ONLY
+)
+
add_fp_unittest(
nearbyint_test
SUITE
diff --git a/libc/test/src/math/smoke/nanbf16_test.cpp b/libc/test/src/math/smoke/nanbf16_test.cpp
new file mode 100644
index 0000000000000..4154f6ed637c8
--- /dev/null
+++ b/libc/test/src/math/smoke/nanbf16_test.cpp
@@ -0,0 +1,55 @@
+//===-- Unittests for nanbf16 ---------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "hdr/signal_macros.h"
+#include "src/__support/FPUtil/FPBits.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/nanbf16.h"
+#include "test/UnitTest/FEnvSafeTest.h"
+#include "test/UnitTest/FPMatcher.h"
+#include "test/UnitTest/Test.h"
+
+class LlvmLibcNanf16Test : public LIBC_NAMESPACE::testing::FEnvSafeTest {
+public:
+ using StorageType = LIBC_NAMESPACE::fputil::FPBits<bfloat16>::StorageType;
+
+ void run_test(const char *input_str, StorageType bits) {
+ bfloat16 result = LIBC_NAMESPACE::nanbf16(input_str);
+ auto actual_fp = LIBC_NAMESPACE::fputil::FPBits<bfloat16>(result);
+ auto expected_fp = LIBC_NAMESPACE::fputil::FPBits<bfloat16>(bits);
+ EXPECT_EQ(actual_fp.uintval(), expected_fp.uintval());
+ }
+};
+
+TEST_F(LlvmLibcNanf16Test, NCharSeq) {
+ run_test("", 0x7fc0);
+
+ // 0x7fc0 + 0x1f (31) = 0x7cdf
+ run_test("31", 0x7fdf);
+
+ // 0x7fc0 + 0x15 = 0x7fd5
+ run_test("0x15", 0x7fd5);
+
+ run_test("1a", 0x7fc0);
+ run_test("1234567890qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM_",
+ 0x7fc0);
+ run_test("10000000000000000000000000000", 0x7fc0);
+}
+
+TEST_F(LlvmLibcNanf16Test, RandomString) {
+ run_test(" 1234", 0x7fc0);
+ run_test("-1234", 0x7fc0);
+ run_test("asd&f", 0x7fc0);
+ run_test("123 ", 0x7fc0);
+}
+
+#if defined(LIBC_ADD_NULL_CHECKS)
+TEST_F(LlvmLibcNanf16Test, InvalidInput) {
+ EXPECT_DEATH([] { LIBC_NAMESPACE::nanbf16(nullptr); }, WITH_SIGNAL(-1));
+}
+#endif // LIBC_ADD_NULL_CHECKS
>From 27364c5fe27d1e06a5ef07c11319f09025fc5c23 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 08:42:52 +0530
Subject: [PATCH 16/17] chore: update entrypoints
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/config/baremetal/aarch64/entrypoints.txt | 1 +
libc/config/baremetal/arm/entrypoints.txt | 1 +
libc/config/baremetal/riscv/entrypoints.txt | 1 +
libc/config/darwin/aarch64/entrypoints.txt | 1 +
libc/config/darwin/x86_64/entrypoints.txt | 1 +
libc/config/gpu/amdgpu/entrypoints.txt | 1 +
libc/config/gpu/nvptx/entrypoints.txt | 1 +
libc/config/linux/aarch64/entrypoints.txt | 1 +
libc/config/linux/arm/entrypoints.txt | 1 +
libc/config/linux/riscv/entrypoints.txt | 1 +
libc/config/linux/x86_64/entrypoints.txt | 1 +
libc/config/windows/entrypoints.txt | 1 +
12 files changed, 12 insertions(+)
diff --git a/libc/config/baremetal/aarch64/entrypoints.txt b/libc/config/baremetal/aarch64/entrypoints.txt
index 5f72793beecb4..c4ec03fc146e8 100644
--- a/libc/config/baremetal/aarch64/entrypoints.txt
+++ b/libc/config/baremetal/aarch64/entrypoints.txt
@@ -788,6 +788,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index 244dd2e87b1fd..d9e173a71e47a 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -791,6 +791,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 32980c4a1d222..9b0cf14037fae 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -791,6 +791,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index 3684713474cbc..2a634852a2ed0 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -621,6 +621,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/darwin/x86_64/entrypoints.txt b/libc/config/darwin/x86_64/entrypoints.txt
index 7482a80c37d33..6a18d557f86fb 100644
--- a/libc/config/darwin/x86_64/entrypoints.txt
+++ b/libc/config/darwin/x86_64/entrypoints.txt
@@ -264,6 +264,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/gpu/amdgpu/entrypoints.txt b/libc/config/gpu/amdgpu/entrypoints.txt
index a88c74be2997a..008f7c7bd642c 100644
--- a/libc/config/gpu/amdgpu/entrypoints.txt
+++ b/libc/config/gpu/amdgpu/entrypoints.txt
@@ -647,6 +647,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/gpu/nvptx/entrypoints.txt b/libc/config/gpu/nvptx/entrypoints.txt
index 08e6c7dc34b07..ae434117eb8e2 100644
--- a/libc/config/gpu/nvptx/entrypoints.txt
+++ b/libc/config/gpu/nvptx/entrypoints.txt
@@ -648,6 +648,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index ea7e2065b2216..88438247643f6 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -875,6 +875,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index 8f21976e9e88e..865392a918624 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -491,6 +491,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index 69d7519118198..207608c431a9b 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -894,6 +894,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 75dcfd6382f1b..44f5f2d03db0a 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -926,6 +926,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index 541d9fee1adf5..32a6a578aae13 100644
--- a/libc/config/windows/entrypoints.txt
+++ b/libc/config/windows/entrypoints.txt
@@ -337,6 +337,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpbf16
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
+ libc.src.math.nanbf16
libc.src.math.nextafterbf16
libc.src.math.nextdownbf16
libc.src.math.nexttowardbf16
>From 250cfeaa32868029be40d44f235bacbdf1bb472e Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Sun, 17 Aug 2025 08:43:03 +0530
Subject: [PATCH 17/17] docs: add nanbf16
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/docs/headers/math/index.rst | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libc/docs/headers/math/index.rst b/libc/docs/headers/math/index.rst
index d8921b985b1f2..9efbce06920b5 100644
--- a/libc/docs/headers/math/index.rst
+++ b/libc/docs/headers/math/index.rst
@@ -211,7 +211,7 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| modf | |check| | |check| | |check| | |check| | |check| | | 7.12.6.18 | F.10.3.18 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| nan | |check| | |check| | |check| | |check| | |check| | | 7.12.11.2 | F.10.8.2 |
+| nan | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.11.2 | F.10.8.2 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| nearbyint | |check| | |check| | |check| | |check| | |check| | | 7.12.9.3 | F.10.6.3 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
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