[libc-commits] [libc] [libc][math][c++23] Add scalb{, l}nbf16 math functions (PR #155569)
Krishna Pandey via libc-commits
libc-commits at lists.llvm.org
Thu Aug 28 07:09:21 PDT 2025
https://github.com/krishna2803 updated https://github.com/llvm/llvm-project/pull/155569
>From 64121d4437c4f167afe91ca7cabc2a1719687d2c Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:05:28 +0530
Subject: [PATCH 01/15] feat: implement
{canonicalize,iscanonical,fdim,copysign,issignaling}bf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/math/canonicalizebf16.h | 21 +++++++++++++++++++++
libc/src/math/copysignbf16.h | 21 +++++++++++++++++++++
libc/src/math/fdimbf16.h | 21 +++++++++++++++++++++
libc/src/math/generic/canonicalizebf16.cpp | 21 +++++++++++++++++++++
libc/src/math/generic/copysignbf16.cpp | 21 +++++++++++++++++++++
libc/src/math/generic/fdimbf16.cpp | 21 +++++++++++++++++++++
libc/src/math/generic/iscanonicalbf16.cpp | 22 ++++++++++++++++++++++
libc/src/math/generic/issignalingbf16.cpp | 21 +++++++++++++++++++++
libc/src/math/iscanonicalbf16.h | 21 +++++++++++++++++++++
libc/src/math/issignalingbf16.h | 21 +++++++++++++++++++++
10 files changed, 211 insertions(+)
create mode 100644 libc/src/math/canonicalizebf16.h
create mode 100644 libc/src/math/copysignbf16.h
create mode 100644 libc/src/math/fdimbf16.h
create mode 100644 libc/src/math/generic/canonicalizebf16.cpp
create mode 100644 libc/src/math/generic/copysignbf16.cpp
create mode 100644 libc/src/math/generic/fdimbf16.cpp
create mode 100644 libc/src/math/generic/iscanonicalbf16.cpp
create mode 100644 libc/src/math/generic/issignalingbf16.cpp
create mode 100644 libc/src/math/iscanonicalbf16.h
create mode 100644 libc/src/math/issignalingbf16.h
diff --git a/libc/src/math/canonicalizebf16.h b/libc/src/math/canonicalizebf16.h
new file mode 100644
index 0000000000000..858fa32969868
--- /dev/null
+++ b/libc/src/math/canonicalizebf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for canonicalizebf16 --------------*- 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_CANONICALIZEBF16_H
+#define LLVM_LIBC_SRC_MATH_CANONICALIZEBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int canonicalizebf16(bfloat16 *cx, const bfloat16 *x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_CANONICALIZEBF16_H
diff --git a/libc/src/math/copysignbf16.h b/libc/src/math/copysignbf16.h
new file mode 100644
index 0000000000000..6369616d6f569
--- /dev/null
+++ b/libc/src/math/copysignbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for copysignbf16 ------------------*- 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_COPYSIGNBF16_H
+#define LLVM_LIBC_SRC_MATH_COPYSIGNBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 copysignbf16(bfloat16 x, bfloat16 y);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_COPYSIGNBF16_H
diff --git a/libc/src/math/fdimbf16.h b/libc/src/math/fdimbf16.h
new file mode 100644
index 0000000000000..75bec34b70db2
--- /dev/null
+++ b/libc/src/math/fdimbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for fdimbf16 ----------------------*- 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_FDIMBF16_H
+#define LLVM_LIBC_SRC_MATH_FDIMBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 fdimbf16(bfloat16 x, bfloat16 y);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_FDIMBF16_H
diff --git a/libc/src/math/generic/canonicalizebf16.cpp b/libc/src/math/generic/canonicalizebf16.cpp
new file mode 100644
index 0000000000000..9cc379060c3de
--- /dev/null
+++ b/libc/src/math/generic/canonicalizebf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of canonicalizebf16 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/canonicalizebf16.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, canonicalizebf16, (bfloat16 * cx, const bfloat16 *x)) {
+ return fputil::canonicalize(*cx, *x);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/copysignbf16.cpp b/libc/src/math/generic/copysignbf16.cpp
new file mode 100644
index 0000000000000..48ade2b26981c
--- /dev/null
+++ b/libc/src/math/generic/copysignbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of copysignbf16 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/copysignbf16.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, copysignbf16, (bfloat16 x, bfloat16 y)) {
+ return fputil::copysign(x, y);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/fdimbf16.cpp b/libc/src/math/generic/fdimbf16.cpp
new file mode 100644
index 0000000000000..0f54055b763e1
--- /dev/null
+++ b/libc/src/math/generic/fdimbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of fdimbf16 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/fdimbf16.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, fdimbf16, (bfloat16 x, bfloat16 y)) {
+ return fputil::fdim(x, y);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/iscanonicalbf16.cpp b/libc/src/math/generic/iscanonicalbf16.cpp
new file mode 100644
index 0000000000000..34c11bfcb83d5
--- /dev/null
+++ b/libc/src/math/generic/iscanonicalbf16.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of iscanonicalbf16 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/iscanonicalbf16.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, iscanonicalbf16, (bfloat16 x)) {
+ bfloat16 tmp;
+ return fputil::canonicalize(tmp, x) == 0;
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/issignalingbf16.cpp b/libc/src/math/generic/issignalingbf16.cpp
new file mode 100644
index 0000000000000..3bb17efaa0ffe
--- /dev/null
+++ b/libc/src/math/generic/issignalingbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of issignalingbf16 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/issignalingbf16.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, issignalingbf16, (bfloat16 x)) {
+ return fputil::issignaling_impl(x);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/iscanonicalbf16.h b/libc/src/math/iscanonicalbf16.h
new file mode 100644
index 0000000000000..f4f975ed9b24e
--- /dev/null
+++ b/libc/src/math/iscanonicalbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for iscanonicalbf16 ---------------*- 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_ISCANONICALBF16_H
+#define LLVM_LIBC_SRC_MATH_ISCANONICALBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int iscanonicalbf16(bfloat16 x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_ISCANONICALBF16_H
diff --git a/libc/src/math/issignalingbf16.h b/libc/src/math/issignalingbf16.h
new file mode 100644
index 0000000000000..afbe70fddf1c0
--- /dev/null
+++ b/libc/src/math/issignalingbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for issignalingbf16 ---------------*- 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_ISSIGNALINGBF16_H
+#define LLVM_LIBC_SRC_MATH_ISSIGNALINGBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int issignalingbf16(bfloat16 x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_ISSIGNALINGBF16_H
>From ff3915c7c47cb3e461cae99034d53229814f0c88 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:05:57 +0530
Subject: [PATCH 02/15] chore: update CMakeLists
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/math/CMakeLists.txt | 5 ++
libc/src/math/generic/CMakeLists.txt | 72 ++++++++++++++++++++++++++++
2 files changed, 77 insertions(+)
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 95e5ae781490f..e6a2f868e46b5 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -78,12 +78,14 @@ add_math_entrypoint_object(canonicalizef)
add_math_entrypoint_object(canonicalizel)
add_math_entrypoint_object(canonicalizef16)
add_math_entrypoint_object(canonicalizef128)
+add_math_entrypoint_object(canonicalizebf16)
add_math_entrypoint_object(iscanonical)
add_math_entrypoint_object(iscanonicalf)
add_math_entrypoint_object(iscanonicall)
add_math_entrypoint_object(iscanonicalf16)
add_math_entrypoint_object(iscanonicalf128)
+add_math_entrypoint_object(iscanonicalbf16)
add_math_entrypoint_object(cbrt)
add_math_entrypoint_object(cbrtf)
@@ -100,6 +102,7 @@ add_math_entrypoint_object(copysignf)
add_math_entrypoint_object(copysignl)
add_math_entrypoint_object(copysignf16)
add_math_entrypoint_object(copysignf128)
+add_math_entrypoint_object(copysignbf16)
add_math_entrypoint_object(cos)
add_math_entrypoint_object(cosf)
@@ -203,6 +206,7 @@ add_math_entrypoint_object(fdimf)
add_math_entrypoint_object(fdiml)
add_math_entrypoint_object(fdimf16)
add_math_entrypoint_object(fdimf128)
+add_math_entrypoint_object(fdimbf16)
add_math_entrypoint_object(fdiv)
add_math_entrypoint_object(fdivl)
@@ -355,6 +359,7 @@ add_math_entrypoint_object(issignalingf)
add_math_entrypoint_object(issignalingl)
add_math_entrypoint_object(issignalingf16)
add_math_entrypoint_object(issignalingf128)
+add_math_entrypoint_object(issignalingbf16)
add_math_entrypoint_object(llogb)
add_math_entrypoint_object(llogbf)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index ba71e5f9e1260..70ca5c51990de 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -52,6 +52,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.basic_operations
)
+add_entrypoint_object(
+ canonicalizebf16
+ SRCS
+ canonicalizebf16.cpp
+ HDRS
+ ../canonicalizebf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_entrypoint_object(
iscanonical
SRCS
@@ -96,6 +110,20 @@ add_entrypoint_object(
libc.src.__support.macros.properties.types
)
+add_entrypoint_object(
+ iscanonicalbf16
+ SRCS
+ iscanonicalbf16.cpp
+ HDRS
+ ../iscanonicalbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_entrypoint_object(
ceil
SRCS
@@ -1748,6 +1776,22 @@ add_entrypoint_object(
libc.src.__support.FPUtil.manipulation_functions
)
+add_entrypoint_object(
+ copysignbf16
+ SRCS
+ copysignbf16.cpp
+ HDRS
+ ../copysignbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.manipulation_functions
+ FLAGS
+ MISC_MATH_BASIC_OPS_OPT
+)
+
add_entrypoint_object(
frexp
SRCS
@@ -3427,6 +3471,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.basic_operations
)
+add_entrypoint_object(
+ fdimbf16
+ SRCS
+ fdimbf16.cpp
+ HDRS
+ ../fdimbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_entrypoint_object(
fdiv
SRCS
@@ -3543,6 +3601,20 @@ add_entrypoint_object(
libc.src.__support.macros.properties.types
)
+add_entrypoint_object(
+ issignalingbf16
+ SRCS
+ issignalingbf16.cpp
+ HDRS
+ ../issignalingbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_entrypoint_object(
isnan
SRCS
>From cbdfc66f487e4b7bd6be5207874847bf52236ea6 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:06:13 +0530
Subject: [PATCH 03/15] chore: add smoke tests for
{canonicalize,iscanonical,fdim,copysign,issignaling}bf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/test/src/math/smoke/CMakeLists.txt | 72 +++++++++++++++++++
.../src/math/smoke/canonicalizebf16_test.cpp | 14 ++++
.../test/src/math/smoke/copysignbf16_test.cpp | 14 ++++
libc/test/src/math/smoke/fdimbf16_test.cpp | 14 ++++
.../src/math/smoke/iscanonicalbf16_test.cpp | 14 ++++
.../src/math/smoke/issignalingbf16_test.cpp | 14 ++++
6 files changed, 142 insertions(+)
create mode 100644 libc/test/src/math/smoke/canonicalizebf16_test.cpp
create mode 100644 libc/test/src/math/smoke/copysignbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/fdimbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/iscanonicalbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/issignalingbf16_test.cpp
diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index a5f856f05bb8c..0497d5e0c06ed 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -432,6 +432,22 @@ add_fp_unittest(
libc.src.__support.integer_literals
)
+add_fp_unittest(
+ canonicalizebf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ canonicalizebf16_test.cpp
+ HDRS
+ CanonicalizeTest.h
+ DEPENDS
+ libc.src.math.canonicalizebf16
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.fp_bits
+ libc.src.__support.FPUtil.fenv_impl
+ libc.src.__support.integer_literals
+)
+
add_fp_unittest(
iscanonical_test
SUITE
@@ -492,6 +508,19 @@ add_fp_unittest(
libc.src.math.iscanonicalf128
)
+add_fp_unittest(
+ iscanonicalbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ iscanonicalbf16_test.cpp
+ HDRS
+ IsCanonicalTest.h
+ DEPENDS
+ libc.src.math.iscanonicalbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
ceil_test
SUITE
@@ -1559,6 +1588,21 @@ add_fp_unittest(
libc.src.__support.FPUtil.fp_bits
)
+add_fp_unittest(
+ copysignbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ copysignbf16_test.cpp
+ HDRS
+ CopySignTest.h
+ DEPENDS
+ libc.src.math.copysignbf16
+ libc.src.__support.CPP.algorithm
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.fp_bits
+)
+
add_fp_unittest(
frexp_test
SUITE
@@ -2076,6 +2120,19 @@ add_fp_unittest(
libc.src.math.issignalingf128
)
+add_fp_unittest(
+ issignalingbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ issignalingbf16_test.cpp
+ HDRS
+ IsSignalingTest.h
+ DEPENDS
+ libc.src.math.issignalingbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
llogb_test
SUITE
@@ -2510,6 +2567,21 @@ add_fp_unittest(
libc.src.__support.FPUtil.fp_bits
)
+add_fp_unittest(
+ fdimbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ fdimbf16_test.cpp
+ HDRS
+ FDimTest.h
+ DEPENDS
+ libc.src.math.fdimbf16
+ libc.src.__support.CPP.algorithm
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.fp_bits
+)
+
add_fp_unittest(
fminf_test
SUITE
diff --git a/libc/test/src/math/smoke/canonicalizebf16_test.cpp b/libc/test/src/math/smoke/canonicalizebf16_test.cpp
new file mode 100644
index 0000000000000..bf955c26ebc4f
--- /dev/null
+++ b/libc/test/src/math/smoke/canonicalizebf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for canonicalizebf16 ------------------------------------===//
+//
+// 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 "CanonicalizeTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/canonicalizebf16.h"
+
+LIST_CANONICALIZE_TESTS(bfloat16, LIBC_NAMESPACE::canonicalizebf16)
diff --git a/libc/test/src/math/smoke/copysignbf16_test.cpp b/libc/test/src/math/smoke/copysignbf16_test.cpp
new file mode 100644
index 0000000000000..71a97e37a7491
--- /dev/null
+++ b/libc/test/src/math/smoke/copysignbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for copysignbf16 ----------------------------------------===//
+//
+// 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 "CopySignTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/copysignbf16.h"
+
+LIST_COPYSIGN_TESTS(bfloat16, LIBC_NAMESPACE::copysignbf16)
diff --git a/libc/test/src/math/smoke/fdimbf16_test.cpp b/libc/test/src/math/smoke/fdimbf16_test.cpp
new file mode 100644
index 0000000000000..43e8039053fdf
--- /dev/null
+++ b/libc/test/src/math/smoke/fdimbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for fdimbf16 --------------------------------------------===//
+//
+// 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 "FDimTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/fdimbf16.h"
+
+LIST_FDIM_TESTS(bfloat16, LIBC_NAMESPACE::fdimbf16);
diff --git a/libc/test/src/math/smoke/iscanonicalbf16_test.cpp b/libc/test/src/math/smoke/iscanonicalbf16_test.cpp
new file mode 100644
index 0000000000000..3d735882e82a3
--- /dev/null
+++ b/libc/test/src/math/smoke/iscanonicalbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for iscanonicalbf16 -------------------------------------===//
+//
+// 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 "IsCanonicalTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/iscanonicalbf16.h"
+
+LIST_ISCANONICAL_TESTS(bfloat16, LIBC_NAMESPACE::iscanonicalbf16)
diff --git a/libc/test/src/math/smoke/issignalingbf16_test.cpp b/libc/test/src/math/smoke/issignalingbf16_test.cpp
new file mode 100644
index 0000000000000..ed7e5af4aa41f
--- /dev/null
+++ b/libc/test/src/math/smoke/issignalingbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for issignalingbf16 -------------------------------------===//
+//
+// 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 "IsSignalingTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/issignalingbf16.h"
+
+LIST_ISSIGNALING_TESTS(bfloat16, LIBC_NAMESPACE::issignalingbf16)
>From 170f9b2204546869db58a3882afe46430b36a8e0 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:06:44 +0530
Subject: [PATCH 04/15] fix: add 0 to T cast
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/__support/FPUtil/BasicOperations.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libc/src/__support/FPUtil/BasicOperations.h b/libc/src/__support/FPUtil/BasicOperations.h
index 2357b053b60b8..ca7be6676630a 100644
--- a/libc/src/__support/FPUtil/BasicOperations.h
+++ b/libc/src/__support/FPUtil/BasicOperations.h
@@ -244,7 +244,7 @@ LIBC_INLINE T fdim(T x, T y) {
return y;
}
- return (x > y ? x - y : 0);
+ return (x > y ? x - y : T(0));
}
// Avoid reusing `issignaling` macro.
>From ceb8818a9f86de8a85bfb8a52e2aac69738f1237 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:09:38 +0530
Subject: [PATCH 05/15] chore: update entrypoints
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/config/baremetal/aarch64/entrypoints.txt | 5 +++++
libc/config/baremetal/arm/entrypoints.txt | 5 +++++
libc/config/baremetal/riscv/entrypoints.txt | 5 +++++
libc/config/darwin/aarch64/entrypoints.txt | 5 +++++
libc/config/darwin/x86_64/entrypoints.txt | 5 +++++
libc/config/gpu/amdgpu/entrypoints.txt | 5 +++++
libc/config/gpu/nvptx/entrypoints.txt | 5 +++++
libc/config/linux/aarch64/entrypoints.txt | 5 +++++
libc/config/linux/arm/entrypoints.txt | 5 +++++
libc/config/linux/riscv/entrypoints.txt | 5 +++++
libc/config/linux/x86_64/entrypoints.txt | 5 +++++
libc/config/windows/entrypoints.txt | 5 +++++
12 files changed, 60 insertions(+)
diff --git a/libc/config/baremetal/aarch64/entrypoints.txt b/libc/config/baremetal/aarch64/entrypoints.txt
index c2e4c337f199a..ce6d0a7e440a4 100644
--- a/libc/config/baremetal/aarch64/entrypoints.txt
+++ b/libc/config/baremetal/aarch64/entrypoints.txt
@@ -772,8 +772,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -790,6 +793,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index c4f3a87659b23..d8fffd0da48da 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -775,8 +775,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -793,6 +796,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 380ca57ea8aa9..2a120b2f68c41 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -775,8 +775,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -793,6 +796,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index 1f4318fc88389..8945b61f186b3 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -605,8 +605,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -623,6 +626,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/darwin/x86_64/entrypoints.txt b/libc/config/darwin/x86_64/entrypoints.txt
index 0cba22016c960..1a5c75fb0c038 100644
--- a/libc/config/darwin/x86_64/entrypoints.txt
+++ b/libc/config/darwin/x86_64/entrypoints.txt
@@ -248,8 +248,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -266,6 +269,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/gpu/amdgpu/entrypoints.txt b/libc/config/gpu/amdgpu/entrypoints.txt
index e08b028865bfc..53fbabc6fce39 100644
--- a/libc/config/gpu/amdgpu/entrypoints.txt
+++ b/libc/config/gpu/amdgpu/entrypoints.txt
@@ -631,8 +631,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -649,6 +652,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/gpu/nvptx/entrypoints.txt b/libc/config/gpu/nvptx/entrypoints.txt
index 88c8fc91ebb77..a970618643f5c 100644
--- a/libc/config/gpu/nvptx/entrypoints.txt
+++ b/libc/config/gpu/nvptx/entrypoints.txt
@@ -633,8 +633,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -651,6 +654,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index 20924e9047c69..e55c47e1ee4d6 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -860,8 +860,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -878,6 +881,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index f2e8ddfe8e91a..55554e439e71e 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -475,8 +475,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -493,6 +496,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index 0ad36a667232a..6bf97c5164ada 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -878,8 +878,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -896,6 +899,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index c060e900472eb..998d4193c353b 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -911,8 +911,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -929,6 +932,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index 9e45b800b10a3..2ca06edfa9a2c 100644
--- a/libc/config/windows/entrypoints.txt
+++ b/libc/config/windows/entrypoints.txt
@@ -321,8 +321,11 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.bf16sub
libc.src.math.bf16subf
libc.src.math.bf16subl
+ libc.src.math.canonicalizebf16
libc.src.math.ceilbf16
+ libc.src.math.copysignbf16
libc.src.math.fabsbf16
+ libc.src.math.fdimbf16
libc.src.math.floorbf16
libc.src.math.fmaxbf16
libc.src.math.fmaximumbf16
@@ -339,6 +342,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.fromfpxbf16
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
+ libc.src.math.iscanonicalbf16
+ libc.src.math.isignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
>From 99f5872441d8279e77884deddd20ad53903044ed Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:10:12 +0530
Subject: [PATCH 06/15] docs: add
{canonicalize,iscanonical,fdim,copysign,issignaling}bf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/docs/headers/math/index.rst | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/libc/docs/headers/math/index.rst b/libc/docs/headers/math/index.rst
index b329bf031312d..818386aa18f02 100644
--- a/libc/docs/headers/math/index.rst
+++ b/libc/docs/headers/math/index.rst
@@ -109,9 +109,9 @@ Basic Operations
+==================+==================+=================+========================+======================+========================+========================+========================+============================+
| ceil | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.9.1 | F.10.6.1 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| canonicalize | |check| | |check| | |check| | |check| | |check| | | 7.12.11.7 | F.10.8.7 |
+| canonicalize | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.11.7 | F.10.8.7 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| copysign | |check| | |check| | |check| | |check| | |check| | | 7.12.11.1 | F.10.8.1 |
+| copysign | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.11.1 | F.10.8.1 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| dadd | N/A | N/A | |check| | N/A | |check|\* | N/A | 7.12.14.1 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
@@ -147,7 +147,7 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| fadd | N/A | |check| | |check| | N/A | |check| | N/A | 7.12.14.1 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| fdim | |check| | |check| | |check| | |check| | |check| | | 7.12.12.1 | F.10.9.1 |
+| fdim | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.12.1 | F.10.9.1 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| fdiv | N/A | |check| | |check| | N/A | |check|\* | N/A | 7.12.14.4 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
@@ -191,9 +191,9 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| ilogb | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.6.8 | F.10.3.8 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| iscanonical | |check| | |check| | |check| | |check| | |check| | | 7.12.3.2 | N/A |
+| iscanonical | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.3.2 | N/A |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| issignaling | |check| | |check| | |check| | |check| | |check| | | 7.12.3.8 | N/A |
+| issignaling | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.3.8 | N/A |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| ldexp | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.6.9 | F.10.3.9 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
>From 204df3472901aba6382817f36b1f3d19e80d662a Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:43:27 +0530
Subject: [PATCH 07/15] feat: implement totalorder{,mag}bf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/math/CMakeLists.txt | 2 ++
libc/src/math/generic/CMakeLists.txt | 29 +++++++++++++++++++++
libc/src/math/generic/totalorderbf16.cpp | 22 ++++++++++++++++
libc/src/math/generic/totalordermagbf16.cpp | 22 ++++++++++++++++
libc/src/math/totalorderbf16.h | 21 +++++++++++++++
libc/src/math/totalordermagbf16.h | 21 +++++++++++++++
6 files changed, 117 insertions(+)
create mode 100644 libc/src/math/generic/totalorderbf16.cpp
create mode 100644 libc/src/math/generic/totalordermagbf16.cpp
create mode 100644 libc/src/math/totalorderbf16.h
create mode 100644 libc/src/math/totalordermagbf16.h
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index e6a2f868e46b5..1edb517421e28 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -579,12 +579,14 @@ add_math_entrypoint_object(totalorderf)
add_math_entrypoint_object(totalorderl)
add_math_entrypoint_object(totalorderf16)
add_math_entrypoint_object(totalorderf128)
+add_math_entrypoint_object(totalorderbf16)
add_math_entrypoint_object(totalordermag)
add_math_entrypoint_object(totalordermagf)
add_math_entrypoint_object(totalordermagl)
add_math_entrypoint_object(totalordermagf16)
add_math_entrypoint_object(totalordermagf128)
+add_math_entrypoint_object(totalordermagbf16)
add_math_entrypoint_object(trunc)
add_math_entrypoint_object(truncf)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 70ca5c51990de..904f8d2eb4704 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -4784,6 +4784,21 @@ add_entrypoint_object(
libc.src.__support.FPUtil.basic_operations
libc.src.__support.macros.properties.types
)
+
+add_entrypoint_object(
+ totalorderbf16
+ SRCS
+ totalorderbf16.cpp
+ HDRS
+ ../totalorderbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_entrypoint_object(
totalordermag
SRCS
@@ -4835,6 +4850,20 @@ add_entrypoint_object(
libc.src.__support.macros.properties.types
)
+add_entrypoint_object(
+ totalordermagbf16
+ SRCS
+ totalordermagbf16.cpp
+ HDRS
+ ../totalordermagbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_entrypoint_object(
getpayload
SRCS
diff --git a/libc/src/math/generic/totalorderbf16.cpp b/libc/src/math/generic/totalorderbf16.cpp
new file mode 100644
index 0000000000000..bb9c86e281f6b
--- /dev/null
+++ b/libc/src/math/generic/totalorderbf16.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of totalorderbf16 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/totalorderbf16.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, totalorderbf16,
+ (const bfloat16 *x, const bfloat16 *y)) {
+ return static_cast<int>(fputil::totalorder(*x, *y));
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/totalordermagbf16.cpp b/libc/src/math/generic/totalordermagbf16.cpp
new file mode 100644
index 0000000000000..3fc61d9d8bcb4
--- /dev/null
+++ b/libc/src/math/generic/totalordermagbf16.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of totalordermagbf16 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/totalordermagbf16.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, totalordermagbf16,
+ (const bfloat16 *x, const bfloat16 *y)) {
+ return static_cast<int>(fputil::totalordermag(*x, *y));
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/totalorderbf16.h b/libc/src/math/totalorderbf16.h
new file mode 100644
index 0000000000000..2414852db92b8
--- /dev/null
+++ b/libc/src/math/totalorderbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for totalorderbf16 ----------------*- 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_TOTALORDERF16_H
+#define LLVM_LIBC_SRC_MATH_TOTALORDERF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int totalorderbf16(const bfloat16 *x, const bfloat16 *y);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_TOTALORDERF16_H
diff --git a/libc/src/math/totalordermagbf16.h b/libc/src/math/totalordermagbf16.h
new file mode 100644
index 0000000000000..c48de1ca8e540
--- /dev/null
+++ b/libc/src/math/totalordermagbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for totalordermagbf16 -------------*- 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_TOTALORDERMAGF16_H
+#define LLVM_LIBC_SRC_MATH_TOTALORDERMAGF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int totalordermagbf16(const bfloat16 *x, const bfloat16 *y);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_TOTALORDERMAGF16_H
>From 06ca9a3956e5331d7cc15bc65d51c1f77f1e6c0c Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:43:42 +0530
Subject: [PATCH 08/15] chore: add smoke tests for totalorder{,mag}bf16 math
functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/test/src/math/smoke/CMakeLists.txt | 26 ++++++++++++
libc/test/src/math/smoke/TotalOrderMagTest.h | 41 +++++++++++++++----
libc/test/src/math/smoke/TotalOrderTest.h | 41 +++++++++++++++----
.../src/math/smoke/totalorderbf16_test.cpp | 14 +++++++
.../src/math/smoke/totalordermagbf16_test.cpp | 14 +++++++
5 files changed, 120 insertions(+), 16 deletions(-)
create mode 100644 libc/test/src/math/smoke/totalorderbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/totalordermagbf16_test.cpp
diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index 0497d5e0c06ed..166802fd9f9cc 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -5050,6 +5050,19 @@ add_fp_unittest(
libc.src.math.totalorderf128
)
+add_fp_unittest(
+ totalorderbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ totalorderbf16_test.cpp
+ HDRS
+ TotalOrderTest.h
+ DEPENDS
+ libc.src.math.totalorderbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
totalordermag_test
SUITE
@@ -5110,6 +5123,19 @@ add_fp_unittest(
libc.src.math.totalordermagf128
)
+add_fp_unittest(
+ totalordermagbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ totalordermagbf16_test.cpp
+ HDRS
+ TotalOrderMagTest.h
+ DEPENDS
+ libc.src.math.totalordermagbf16
+ libc.src.__support.FPUtil.bfloat16
+)
+
add_fp_unittest(
getpayload_test
SUITE
diff --git a/libc/test/src/math/smoke/TotalOrderMagTest.h b/libc/test/src/math/smoke/TotalOrderMagTest.h
index 0a13fd2922e4c..2b37d8b2f6c4a 100644
--- a/libc/test/src/math/smoke/TotalOrderMagTest.h
+++ b/libc/test/src/math/smoke/TotalOrderMagTest.h
@@ -111,19 +111,44 @@ class TotalOrderMagTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
T snan_0x42 = FPBits::signaling_nan(Sign::POS, 0x42).get_val();
T neg_snan_0x42 = FPBits::signaling_nan(Sign::NEG, 0x42).get_val();
+ T qnan_0x15 = FPBits::quiet_nan(Sign::POS, 0x15).get_val();
+ T neg_qnan_0x15 = FPBits::quiet_nan(Sign::NEG, 0x15).get_val();
+ T snan_0x15 = FPBits::signaling_nan(Sign::POS, 0x15).get_val();
+ T neg_snan_0x15 = FPBits::signaling_nan(Sign::NEG, 0x15).get_val();
+
EXPECT_TRUE(funcWrapper(func, aNaN, aNaN));
EXPECT_TRUE(funcWrapper(func, sNaN, sNaN));
- EXPECT_TRUE(funcWrapper(func, aNaN, qnan_0x42));
- EXPECT_FALSE(funcWrapper(func, sNaN, snan_0x42));
- EXPECT_FALSE(funcWrapper(func, qnan_0x42, aNaN));
- EXPECT_TRUE(funcWrapper(func, snan_0x42, sNaN));
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 7) {
+ EXPECT_TRUE(funcWrapper(func, aNaN, qnan_0x42));
+ EXPECT_FALSE(funcWrapper(func, sNaN, snan_0x42));
+ EXPECT_FALSE(funcWrapper(func, qnan_0x42, aNaN));
+ EXPECT_TRUE(funcWrapper(func, snan_0x42, sNaN));
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 5) {
+ EXPECT_TRUE(funcWrapper(func, aNaN, qnan_0x15));
+ EXPECT_FALSE(funcWrapper(func, sNaN, snan_0x15));
+ EXPECT_FALSE(funcWrapper(func, qnan_0x15, aNaN));
+ EXPECT_TRUE(funcWrapper(func, snan_0x15, sNaN));
+ }
EXPECT_TRUE(funcWrapper(func, neg_aNaN, neg_aNaN));
EXPECT_TRUE(funcWrapper(func, neg_sNaN, neg_sNaN));
- EXPECT_TRUE(funcWrapper(func, neg_aNaN, neg_qnan_0x42));
- EXPECT_FALSE(funcWrapper(func, neg_sNaN, neg_snan_0x42));
- EXPECT_FALSE(funcWrapper(func, neg_qnan_0x42, neg_aNaN));
- EXPECT_TRUE(funcWrapper(func, neg_snan_0x42, neg_sNaN));
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 7) {
+ EXPECT_TRUE(funcWrapper(func, neg_aNaN, neg_qnan_0x42));
+ EXPECT_FALSE(funcWrapper(func, neg_sNaN, neg_snan_0x42));
+ EXPECT_FALSE(funcWrapper(func, neg_qnan_0x42, neg_aNaN));
+ EXPECT_TRUE(funcWrapper(func, neg_snan_0x42, neg_sNaN));
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 5) {
+ EXPECT_TRUE(funcWrapper(func, neg_aNaN, neg_qnan_0x15));
+ EXPECT_FALSE(funcWrapper(func, neg_sNaN, neg_snan_0x15));
+ EXPECT_FALSE(funcWrapper(func, neg_qnan_0x15, neg_aNaN));
+ EXPECT_TRUE(funcWrapper(func, neg_snan_0x15, neg_sNaN));
+ }
}
};
diff --git a/libc/test/src/math/smoke/TotalOrderTest.h b/libc/test/src/math/smoke/TotalOrderTest.h
index e426eb35016b9..e5984391f719f 100644
--- a/libc/test/src/math/smoke/TotalOrderTest.h
+++ b/libc/test/src/math/smoke/TotalOrderTest.h
@@ -109,19 +109,44 @@ class TotalOrderTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
T snan_0x42 = FPBits::signaling_nan(Sign::POS, 0x42).get_val();
T neg_snan_0x42 = FPBits::signaling_nan(Sign::NEG, 0x42).get_val();
+ T qnan_0x15 = FPBits::quiet_nan(Sign::POS, 0x15).get_val();
+ T neg_qnan_0x15 = FPBits::quiet_nan(Sign::NEG, 0x15).get_val();
+ T snan_0x15 = FPBits::signaling_nan(Sign::POS, 0x15).get_val();
+ T neg_snan_0x15 = FPBits::signaling_nan(Sign::NEG, 0x15).get_val();
+
EXPECT_TRUE(funcWrapper(func, aNaN, aNaN));
EXPECT_TRUE(funcWrapper(func, sNaN, sNaN));
- EXPECT_TRUE(funcWrapper(func, aNaN, qnan_0x42));
- EXPECT_FALSE(funcWrapper(func, sNaN, snan_0x42));
- EXPECT_FALSE(funcWrapper(func, qnan_0x42, aNaN));
- EXPECT_TRUE(funcWrapper(func, snan_0x42, sNaN));
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 7) {
+ EXPECT_TRUE(funcWrapper(func, aNaN, qnan_0x42));
+ EXPECT_FALSE(funcWrapper(func, sNaN, snan_0x42));
+ EXPECT_FALSE(funcWrapper(func, qnan_0x42, aNaN));
+ EXPECT_TRUE(funcWrapper(func, snan_0x42, sNaN));
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 5) {
+ EXPECT_TRUE(funcWrapper(func, aNaN, qnan_0x15));
+ EXPECT_FALSE(funcWrapper(func, sNaN, snan_0x15));
+ EXPECT_FALSE(funcWrapper(func, qnan_0x15, aNaN));
+ EXPECT_TRUE(funcWrapper(func, snan_0x15, sNaN));
+ }
EXPECT_TRUE(funcWrapper(func, neg_aNaN, neg_aNaN));
EXPECT_TRUE(funcWrapper(func, neg_sNaN, neg_sNaN));
- EXPECT_FALSE(funcWrapper(func, neg_aNaN, neg_qnan_0x42));
- EXPECT_TRUE(funcWrapper(func, neg_sNaN, neg_snan_0x42));
- EXPECT_TRUE(funcWrapper(func, neg_qnan_0x42, neg_aNaN));
- EXPECT_FALSE(funcWrapper(func, neg_snan_0x42, neg_sNaN));
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 7) {
+ EXPECT_FALSE(funcWrapper(func, neg_aNaN, neg_qnan_0x42));
+ EXPECT_TRUE(funcWrapper(func, neg_sNaN, neg_snan_0x42));
+ EXPECT_TRUE(funcWrapper(func, neg_qnan_0x42, neg_aNaN));
+ EXPECT_FALSE(funcWrapper(func, neg_snan_0x42, neg_sNaN));
+ }
+
+ if constexpr (FPBits::FRACTION_LEN - 1 >= 5) {
+ EXPECT_FALSE(funcWrapper(func, neg_aNaN, neg_qnan_0x15));
+ EXPECT_TRUE(funcWrapper(func, neg_sNaN, neg_snan_0x15));
+ EXPECT_TRUE(funcWrapper(func, neg_qnan_0x15, neg_aNaN));
+ EXPECT_FALSE(funcWrapper(func, neg_snan_0x15, neg_sNaN));
+ }
}
};
diff --git a/libc/test/src/math/smoke/totalorderbf16_test.cpp b/libc/test/src/math/smoke/totalorderbf16_test.cpp
new file mode 100644
index 0000000000000..11aeeac0c52dd
--- /dev/null
+++ b/libc/test/src/math/smoke/totalorderbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for totalorderbf16 --------------------------------------===//
+//
+// 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 "TotalOrderTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/totalorderbf16.h"
+
+LIST_TOTALORDER_TESTS(bfloat16, LIBC_NAMESPACE::totalorderbf16)
diff --git a/libc/test/src/math/smoke/totalordermagbf16_test.cpp b/libc/test/src/math/smoke/totalordermagbf16_test.cpp
new file mode 100644
index 0000000000000..b5a5a1b7d6c52
--- /dev/null
+++ b/libc/test/src/math/smoke/totalordermagbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for totalordermagbf16 -----------------------------------===//
+//
+// 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 "TotalOrderMagTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/totalordermagbf16.h"
+
+LIST_TOTALORDERMAG_TESTS(bfloat16, LIBC_NAMESPACE::totalordermagbf16)
>From f83bce4928ed483836a84d7630fcbced151602fd Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:43:52 +0530
Subject: [PATCH 09/15] 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, 36 insertions(+), 12 deletions(-)
diff --git a/libc/config/baremetal/aarch64/entrypoints.txt b/libc/config/baremetal/aarch64/entrypoints.txt
index ce6d0a7e440a4..ff3a6bfa8a2fc 100644
--- a/libc/config/baremetal/aarch64/entrypoints.txt
+++ b/libc/config/baremetal/aarch64/entrypoints.txt
@@ -794,7 +794,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -817,6 +817,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 d8fffd0da48da..f8916d71f86aa 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -797,7 +797,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -820,6 +820,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 2a120b2f68c41..8a72fa6692869 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -797,7 +797,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -820,6 +820,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 8945b61f186b3..796c0d3c8a4ff 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -627,7 +627,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -650,6 +650,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 1a5c75fb0c038..fa1d8def8936c 100644
--- a/libc/config/darwin/x86_64/entrypoints.txt
+++ b/libc/config/darwin/x86_64/entrypoints.txt
@@ -270,7 +270,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -293,6 +293,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 53fbabc6fce39..49c41411cb5d2 100644
--- a/libc/config/gpu/amdgpu/entrypoints.txt
+++ b/libc/config/gpu/amdgpu/entrypoints.txt
@@ -653,7 +653,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -676,6 +676,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 a970618643f5c..06a2c9addb7fb 100644
--- a/libc/config/gpu/nvptx/entrypoints.txt
+++ b/libc/config/gpu/nvptx/entrypoints.txt
@@ -655,7 +655,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -678,6 +678,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 e55c47e1ee4d6..feea7ff69c166 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -882,7 +882,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -905,6 +905,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 55554e439e71e..8e92fac863c6b 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -497,7 +497,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -520,6 +520,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 6bf97c5164ada..fb08cfe7bd3f8 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -900,7 +900,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -923,6 +923,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
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 998d4193c353b..37af75454daa3 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -933,7 +933,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -956,6 +956,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
)
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index 2ca06edfa9a2c..c09e6b259fa42 100644
--- a/libc/config/windows/entrypoints.txt
+++ b/libc/config/windows/entrypoints.txt
@@ -343,7 +343,7 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.getpayloadbf16
libc.src.math.ilogbbf16
libc.src.math.iscanonicalbf16
- libc.src.math.isignalingbf16
+ libc.src.math.issignalingbf16
libc.src.math.ldexpbf16
libc.src.math.llogbbf16
libc.src.math.llrintbf16
@@ -366,6 +366,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
+ libc.src.math.totalorderbf16
+ libc.src.math.totalordermagbf16
libc.src.math.ufromfpbf16
libc.src.math.ufromfpxbf16
)
>From 4396ea91f1af80bf74bd765a3c02b95ca71a89bc Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:44:02 +0530
Subject: [PATCH 10/15] docs: add totalorder{,mag}bf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/docs/headers/math/index.rst | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libc/docs/headers/math/index.rst b/libc/docs/headers/math/index.rst
index 818386aa18f02..89624460c3af5 100644
--- a/libc/docs/headers/math/index.rst
+++ b/libc/docs/headers/math/index.rst
@@ -241,9 +241,9 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| 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 |
+| totalorder | |check| | |check| | |check| | |check| | |check| | |check| | F.10.12.1 | N/A |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| totalordermag | |check| | |check| | |check| | |check| | |check| | | F.10.12.2 | N/A |
+| totalordermag | |check| | |check| | |check| | |check| | |check| | |check| | F.10.12.2 | N/A |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| trunc | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.9.9 | F.10.6.9 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
>From b633a7651bfe97a3f23b911c4c28b39f28abe5c3 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:54:58 +0530
Subject: [PATCH 11/15] feat: implement scalb{,l}nbf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/math/CMakeLists.txt | 2 ++
libc/src/math/generic/CMakeLists.txt | 28 +++++++++++++++++++++++++++
libc/src/math/generic/scalblnbf16.cpp | 21 ++++++++++++++++++++
libc/src/math/generic/scalbnbf16.cpp | 21 ++++++++++++++++++++
libc/src/math/scalblnbf16.h | 21 ++++++++++++++++++++
libc/src/math/scalbnbf16.h | 21 ++++++++++++++++++++
6 files changed, 114 insertions(+)
create mode 100644 libc/src/math/generic/scalblnbf16.cpp
create mode 100644 libc/src/math/generic/scalbnbf16.cpp
create mode 100644 libc/src/math/scalblnbf16.h
create mode 100644 libc/src/math/scalbnbf16.h
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 1edb517421e28..4b325f773b35f 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -518,12 +518,14 @@ add_math_entrypoint_object(scalblnf)
add_math_entrypoint_object(scalblnl)
add_math_entrypoint_object(scalblnf16)
add_math_entrypoint_object(scalblnf128)
+add_math_entrypoint_object(scalblnbf16)
add_math_entrypoint_object(scalbn)
add_math_entrypoint_object(scalbnf)
add_math_entrypoint_object(scalbnl)
add_math_entrypoint_object(scalbnf16)
add_math_entrypoint_object(scalbnf128)
+add_math_entrypoint_object(scalbnbf16)
add_math_entrypoint_object(setpayload)
add_math_entrypoint_object(setpayloadf)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 904f8d2eb4704..b1fcbf356777a 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -4646,6 +4646,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.manipulation_functions
)
+add_entrypoint_object(
+ scalblnbf16
+ SRCS
+ scalblnbf16.cpp
+ HDRS
+ ../scalblnbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.manipulation_functions
+)
+
add_entrypoint_object(
scalbn
SRCS
@@ -4703,6 +4717,20 @@ add_entrypoint_object(
libc.src.__support.FPUtil.manipulation_functions
)
+add_entrypoint_object(
+ scalbnbf16
+ SRCS
+ scalbnbf16.cpp
+ HDRS
+ ../scalblnbf16.h
+ DEPENDS
+ libc.src.__support.common
+ libc.src.__support.macros.config
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.manipulation_functions
+)
+
add_entrypoint_object(
fmaf
SRCS
diff --git a/libc/src/math/generic/scalblnbf16.cpp b/libc/src/math/generic/scalblnbf16.cpp
new file mode 100644
index 0000000000000..cda8e126efacb
--- /dev/null
+++ b/libc/src/math/generic/scalblnbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of scalblnbf16 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/scalblnbf16.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, scalblnbf16, (bfloat16 x, long n)) {
+ return fputil::ldexp(x, n);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/scalbnbf16.cpp b/libc/src/math/generic/scalbnbf16.cpp
new file mode 100644
index 0000000000000..87833742d59ac
--- /dev/null
+++ b/libc/src/math/generic/scalbnbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of scalbnbf16 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/scalbnbf16.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, scalbnbf16, (bfloat16 x, int n)) {
+ return fputil::ldexp(x, n);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/scalblnbf16.h b/libc/src/math/scalblnbf16.h
new file mode 100644
index 0000000000000..10aad05fc6b1f
--- /dev/null
+++ b/libc/src/math/scalblnbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for scalblnbf16 -------------------*- 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_SCALBLNBF16_H
+#define LLVM_LIBC_SRC_MATH_SCALBLNBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 scalblnbf16(bfloat16 x, long n);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_SCALBLNBF16_H
diff --git a/libc/src/math/scalbnbf16.h b/libc/src/math/scalbnbf16.h
new file mode 100644
index 0000000000000..67efa338fe630
--- /dev/null
+++ b/libc/src/math/scalbnbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for scalbnbf16 --------------------*- 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_SCALBNBF16_H
+#define LLVM_LIBC_SRC_MATH_SCALBNBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 scalbnbf16(bfloat16 x, int n);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_SCALBNBF16_H
>From e99d5c20c280aaa2d40080514c5618b289438c60 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:55:14 +0530
Subject: [PATCH 12/15] chore: add smoke tests for scalb{,l}nbf16 math
functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/test/src/math/smoke/CMakeLists.txt | 32 +++++++++++++++++++
libc/test/src/math/smoke/scalblnbf16_test.cpp | 14 ++++++++
libc/test/src/math/smoke/scalbnbf16_test.cpp | 14 ++++++++
3 files changed, 60 insertions(+)
create mode 100644 libc/test/src/math/smoke/scalblnbf16_test.cpp
create mode 100644 libc/test/src/math/smoke/scalbnbf16_test.cpp
diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index 166802fd9f9cc..226ef2ee71866 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -4881,6 +4881,22 @@ add_fp_unittest(
libc.src.__support.FPUtil.normal_float
)
+add_fp_unittest(
+ scalblnbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ scalblnbf16_test.cpp
+ HDRS
+ ScalbnTest.h
+ DEPENDS
+ libc.src.math.scalblnbf16
+ libc.src.__support.CPP.limits
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.fp_bits
+ libc.src.__support.FPUtil.normal_float
+)
+
add_fp_unittest(
scalbn_test
SUITE
@@ -4956,6 +4972,22 @@ add_fp_unittest(
libc.src.__support.FPUtil.normal_float
)
+add_fp_unittest(
+ scalbnbf16_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ scalbnbf16_test.cpp
+ HDRS
+ ScalbnTest.h
+ DEPENDS
+ libc.src.math.scalbnbf16
+ libc.src.__support.CPP.limits
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.fp_bits
+ libc.src.__support.FPUtil.normal_float
+)
+
add_fp_unittest(
erff_test
SUITE
diff --git a/libc/test/src/math/smoke/scalblnbf16_test.cpp b/libc/test/src/math/smoke/scalblnbf16_test.cpp
new file mode 100644
index 0000000000000..c6fc3aac5e744
--- /dev/null
+++ b/libc/test/src/math/smoke/scalblnbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for scalblnbf16 -----------------------------------------===//
+//
+// 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 "ScalbnTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/scalblnbf16.h"
+
+LIST_SCALBN_TESTS(bfloat16, long, LIBC_NAMESPACE::scalblnbf16)
diff --git a/libc/test/src/math/smoke/scalbnbf16_test.cpp b/libc/test/src/math/smoke/scalbnbf16_test.cpp
new file mode 100644
index 0000000000000..855fd75e6e8f9
--- /dev/null
+++ b/libc/test/src/math/smoke/scalbnbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for scalbnbf16 ------------------------------------------===//
+//
+// 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 "ScalbnTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/scalbnbf16.h"
+
+LIST_SCALBN_TESTS(bfloat16, int, LIBC_NAMESPACE::scalbnbf16)
>From a7187f9176c77ad60d88cfc9cddadba7fe4b7bd1 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:56:09 +0530
Subject: [PATCH 13/15] chore: update entrypoints
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/config/baremetal/aarch64/entrypoints.txt | 2 ++
libc/config/baremetal/arm/entrypoints.txt | 2 ++
libc/config/baremetal/riscv/entrypoints.txt | 2 ++
libc/config/darwin/aarch64/entrypoints.txt | 2 ++
libc/config/darwin/x86_64/entrypoints.txt | 2 ++
libc/config/gpu/amdgpu/entrypoints.txt | 2 ++
libc/config/gpu/nvptx/entrypoints.txt | 2 ++
libc/config/linux/aarch64/entrypoints.txt | 2 ++
libc/config/linux/arm/entrypoints.txt | 2 ++
libc/config/linux/riscv/entrypoints.txt | 2 ++
libc/config/linux/x86_64/entrypoints.txt | 2 ++
libc/config/windows/entrypoints.txt | 2 ++
12 files changed, 24 insertions(+)
diff --git a/libc/config/baremetal/aarch64/entrypoints.txt b/libc/config/baremetal/aarch64/entrypoints.txt
index ff3a6bfa8a2fc..637be4f19d5b7 100644
--- a/libc/config/baremetal/aarch64/entrypoints.txt
+++ b/libc/config/baremetal/aarch64/entrypoints.txt
@@ -814,6 +814,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index f8916d71f86aa..19aedb0a8677d 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -817,6 +817,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 8a72fa6692869..cfbb598cbe4bf 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -817,6 +817,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index 796c0d3c8a4ff..26e97d8993039 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -647,6 +647,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/darwin/x86_64/entrypoints.txt b/libc/config/darwin/x86_64/entrypoints.txt
index fa1d8def8936c..0556a6f7a4715 100644
--- a/libc/config/darwin/x86_64/entrypoints.txt
+++ b/libc/config/darwin/x86_64/entrypoints.txt
@@ -290,6 +290,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/gpu/amdgpu/entrypoints.txt b/libc/config/gpu/amdgpu/entrypoints.txt
index 49c41411cb5d2..8817972480aac 100644
--- a/libc/config/gpu/amdgpu/entrypoints.txt
+++ b/libc/config/gpu/amdgpu/entrypoints.txt
@@ -673,6 +673,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/gpu/nvptx/entrypoints.txt b/libc/config/gpu/nvptx/entrypoints.txt
index 06a2c9addb7fb..db762ed5c74d6 100644
--- a/libc/config/gpu/nvptx/entrypoints.txt
+++ b/libc/config/gpu/nvptx/entrypoints.txt
@@ -675,6 +675,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index feea7ff69c166..0a2ebfa3f8720 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -902,6 +902,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index 8e92fac863c6b..ea1c5c0558272 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -517,6 +517,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index fb08cfe7bd3f8..d5180b77c3af0 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -920,6 +920,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 37af75454daa3..c64db2cc3548f 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -953,6 +953,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index c09e6b259fa42..9f825bdf657e9 100644
--- a/libc/config/windows/entrypoints.txt
+++ b/libc/config/windows/entrypoints.txt
@@ -363,6 +363,8 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
libc.src.math.rintbf16
libc.src.math.roundbf16
libc.src.math.roundevenbf16
+ libc.src.math.scalblnbf16
+ libc.src.math.scalbnbf16
libc.src.math.setpayloadbf16
libc.src.math.setpayloadsigbf16
libc.src.math.truncbf16
>From 5ff2ddcf948730daf997eecaf6ffefca259ad3fc Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 12:56:52 +0530
Subject: [PATCH 14/15] docs: add scalb{,l}nbf16 math functions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/docs/headers/math/index.rst | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libc/docs/headers/math/index.rst b/libc/docs/headers/math/index.rst
index 89624460c3af5..a707b37894afc 100644
--- a/libc/docs/headers/math/index.rst
+++ b/libc/docs/headers/math/index.rst
@@ -233,9 +233,9 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| roundeven | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.9.8 | F.10.6.8 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| scalbln | |check| | |check| | |check| | |check| | |check| | | 7.12.6.19 | F.10.3.19 |
+| scalbln | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.6.19 | F.10.3.19 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| scalbn | |check| | |check| | |check| | |check| | |check| | | 7.12.6.19 | F.10.3.19 |
+| scalbn | |check| | |check| | |check| | |check| | |check| | |check| | 7.12.6.19 | F.10.3.19 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
| setpayload | |check| | |check| | |check| | |check| | |check| | |check| | F.10.13.2 | N/A |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
>From 68556bd1bf88dd6b408a5ce2608747a68f6ed8f0 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 27 Aug 2025 22:54:29 +0530
Subject: [PATCH 15/15] chore: add FLT_RADIX check in scalb{,l}nbf16 function
definitions
Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
libc/src/math/generic/CMakeLists.txt | 2 ++
libc/src/math/generic/scalblnbf16.cpp | 5 +++++
libc/src/math/generic/scalbnbf16.cpp | 5 +++++
3 files changed, 12 insertions(+)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index b1fcbf356777a..5e252c1cc2f26 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -4653,6 +4653,7 @@ add_entrypoint_object(
HDRS
../scalblnbf16.h
DEPENDS
+ libc.hdr.float_macros
libc.src.__support.common
libc.src.__support.macros.config
libc.src.__support.macros.properties.types
@@ -4724,6 +4725,7 @@ add_entrypoint_object(
HDRS
../scalblnbf16.h
DEPENDS
+ libc.hdr.float_macros
libc.src.__support.common
libc.src.__support.macros.config
libc.src.__support.macros.properties.types
diff --git a/libc/src/math/generic/scalblnbf16.cpp b/libc/src/math/generic/scalblnbf16.cpp
index cda8e126efacb..f85f702660ed2 100644
--- a/libc/src/math/generic/scalblnbf16.cpp
+++ b/libc/src/math/generic/scalblnbf16.cpp
@@ -7,11 +7,16 @@
//===----------------------------------------------------------------------===//
#include "src/math/scalblnbf16.h"
+#include "hdr/float_macros.h"
#include "src/__support/FPUtil/ManipulationFunctions.h"
#include "src/__support/FPUtil/bfloat16.h"
#include "src/__support/common.h"
#include "src/__support/macros/config.h"
+#if FLT_RADIX != 2
+#error "FLT_RADIX != 2 is not supported."
+#endif
+
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(bfloat16, scalblnbf16, (bfloat16 x, long n)) {
diff --git a/libc/src/math/generic/scalbnbf16.cpp b/libc/src/math/generic/scalbnbf16.cpp
index 87833742d59ac..108f9e7d4d057 100644
--- a/libc/src/math/generic/scalbnbf16.cpp
+++ b/libc/src/math/generic/scalbnbf16.cpp
@@ -7,11 +7,16 @@
//===----------------------------------------------------------------------===//
#include "src/math/scalbnbf16.h"
+#include "hdr/float_macros.h"
#include "src/__support/FPUtil/ManipulationFunctions.h"
#include "src/__support/FPUtil/bfloat16.h"
#include "src/__support/common.h"
#include "src/__support/macros/config.h"
+#if FLT_RADIX != 2
+#error "FLT_RADIX != 2 is not supported."
+#endif
+
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(bfloat16, scalbnbf16, (bfloat16 x, int n)) {
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