[llvm-branch-commits] [libc] [libc][math][c++23] Add {modf, remainder, remquo}bf16 math functions (PR #154652)

Krishna Pandey via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Sun Aug 24 14:10:07 PDT 2025


https://github.com/krishna2803 updated https://github.com/llvm/llvm-project/pull/154652

>From fc5e2152b4c57238ed424138ca27de1635146ef5 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 20 Aug 2025 03:43:58 +0530
Subject: [PATCH 1/6] feat: implement {modf,remainder,remquo}bf16 math
 functions

Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
 libc/src/math/CMakeLists.txt            |  6 ++-
 libc/src/math/generic/CMakeLists.txt    | 58 +++++++++++++++++++++++++
 libc/src/math/generic/modfbf16.cpp      | 21 +++++++++
 libc/src/math/generic/remainderbf16.cpp | 22 ++++++++++
 libc/src/math/generic/remquobf16.cpp    | 21 +++++++++
 libc/src/math/modfbf16.h                | 21 +++++++++
 libc/src/math/remainderbf16.h           | 21 +++++++++
 libc/src/math/remquobf16.h              | 21 +++++++++
 8 files changed, 190 insertions(+), 1 deletion(-)
 create mode 100644 libc/src/math/generic/modfbf16.cpp
 create mode 100644 libc/src/math/generic/remainderbf16.cpp
 create mode 100644 libc/src/math/generic/remquobf16.cpp
 create mode 100644 libc/src/math/modfbf16.h
 create mode 100644 libc/src/math/remainderbf16.h
 create mode 100644 libc/src/math/remquobf16.h

diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index b1d76c6008cf5..6cc221178df94 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -300,6 +300,7 @@ add_math_entrypoint_object(fmodf)
 add_math_entrypoint_object(fmodl)
 add_math_entrypoint_object(fmodf16)
 add_math_entrypoint_object(fmodf128)
+add_math_entrypoint_object(fmodbf16)
 
 add_math_entrypoint_object(frexp)
 add_math_entrypoint_object(frexpf)
@@ -419,6 +420,7 @@ add_math_entrypoint_object(modff)
 add_math_entrypoint_object(modfl)
 add_math_entrypoint_object(modff16)
 add_math_entrypoint_object(modff128)
+add_math_entrypoint_object(modfbf16)
 
 add_math_entrypoint_object(nan)
 add_math_entrypoint_object(nanf)
@@ -470,12 +472,14 @@ add_math_entrypoint_object(remainderf)
 add_math_entrypoint_object(remainderl)
 add_math_entrypoint_object(remainderf16)
 add_math_entrypoint_object(remainderf128)
+add_math_entrypoint_object(remainderbf16)
 
 add_math_entrypoint_object(remquo)
 add_math_entrypoint_object(remquof)
-add_math_entrypoint_object(remquof128)
 add_math_entrypoint_object(remquol)
 add_math_entrypoint_object(remquof16)
+add_math_entrypoint_object(remquof128)
+add_math_entrypoint_object(remquobf16)
 
 add_math_entrypoint_object(rint)
 add_math_entrypoint_object(rintf)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 3dbc54a819722..46de2e09d3ba9 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -2280,6 +2280,21 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.manipulation_functions
 )
 
+add_entrypoint_object(
+  modfbf16
+  SRCS
+    modfbf16.cpp
+  HDRS
+    ../modfbf16.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(
   fmin
   SRCS
@@ -3184,6 +3199,21 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.division_and_remainder_operations
 )
 
+add_entrypoint_object(
+  remquobf16
+  SRCS
+    remquobf16.cpp
+  HDRS
+    ../remquobf16.h
+  DEPENDS
+    libc.src.__support.common
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.division_and_remainder_operations
+    libc.src.__support.macros.properties.types
+    libc.src.__support.macros.config
+)
+
+
 add_entrypoint_object(
   remainderf
   SRCS
@@ -3236,6 +3266,20 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.division_and_remainder_operations
 )
 
+add_entrypoint_object(
+  remainderbf16
+  SRCS
+    remainderbf16.cpp
+  HDRS
+    ../remainderbf16.h
+  DEPENDS
+    libc.src.__support.common
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.division_and_remainder_operations
+    libc.src.__support.macros.properties.types
+    libc.src.__support.macros.config
+)
+
 add_entrypoint_object(
   hypotf
   SRCS
@@ -3835,6 +3879,20 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.generic.fmod
 )
 
+add_entrypoint_object(
+  fmodbf16
+  SRCS
+    fmodbf16.cpp
+  HDRS
+    ../fmodbf16.h
+  DEPENDS
+    libc.src.__support.common
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.generic.fmod
+    libc.src.__support.macros.config
+    libc.src.__support.macros.properties.types
+)
+
 add_entrypoint_object(
   fromfp
   SRCS
diff --git a/libc/src/math/generic/modfbf16.cpp b/libc/src/math/generic/modfbf16.cpp
new file mode 100644
index 0000000000000..09458f6a2db40
--- /dev/null
+++ b/libc/src/math/generic/modfbf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of modfbf16 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/modfbf16.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, modfbf16, (bfloat16 x, bfloat16 *iptr)) {
+  return fputil::modf(x, *iptr);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/remainderbf16.cpp b/libc/src/math/generic/remainderbf16.cpp
new file mode 100644
index 0000000000000..e70726a6cbc55
--- /dev/null
+++ b/libc/src/math/generic/remainderbf16.cpp
@@ -0,0 +1,22 @@
+//===-- Implementation of remainderbf16 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/remainderbf16.h"
+#include "src/__support/FPUtil/DivisionAndRemainderOperations.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, remainderbf16, (bfloat16 x, bfloat16 y)) {
+  int quotient;
+  return fputil::remquo(x, y, quotient);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/generic/remquobf16.cpp b/libc/src/math/generic/remquobf16.cpp
new file mode 100644
index 0000000000000..e1b13f8deb19a
--- /dev/null
+++ b/libc/src/math/generic/remquobf16.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of remquobf16 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/remquobf16.h"
+#include "src/__support/FPUtil/DivisionAndRemainderOperations.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, remquobf16, (bfloat16 x, bfloat16 y, int *exp)) {
+  return fputil::remquo(x, y, *exp);
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/math/modfbf16.h b/libc/src/math/modfbf16.h
new file mode 100644
index 0000000000000..df05b6c5b0aad
--- /dev/null
+++ b/libc/src/math/modfbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for modfbf16 ----------------------*- 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_MODFBF16_H
+#define LLVM_LIBC_SRC_MATH_MODFBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 modfbf16(bfloat16 x, bfloat16 *iptr);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_MODFBF16_H
diff --git a/libc/src/math/remainderbf16.h b/libc/src/math/remainderbf16.h
new file mode 100644
index 0000000000000..a1a2eaa3a0efb
--- /dev/null
+++ b/libc/src/math/remainderbf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for remainderbf16 -----------------*- 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_REMAINDERBF16_H
+#define LLVM_LIBC_SRC_MATH_REMAINDERBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 remainderbf16(bfloat16 x, bfloat16 y);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_REMAINDERBF16_H
diff --git a/libc/src/math/remquobf16.h b/libc/src/math/remquobf16.h
new file mode 100644
index 0000000000000..909db17dec58a
--- /dev/null
+++ b/libc/src/math/remquobf16.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for remquobf16 --------------------*- 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_REMQUOBF16_H
+#define LLVM_LIBC_SRC_MATH_REMQUOBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 remquobf16(bfloat16 x, bfloat16 y, int *exp);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_REMQUOBF16_H

>From d0e8c830dbbe7712412dfcec15b369f4757770c8 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 20 Aug 2025 03:44:13 +0530
Subject: [PATCH 2/6] chore: add smoke tests for {modf,remainder,remquo}bf16
 math functions

Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
 libc/test/src/math/smoke/CMakeLists.txt      | 30 ++++++++++++++++++++
 libc/test/src/math/smoke/ModfTest.h          | 10 +++++--
 libc/test/src/math/smoke/modfbf16_test.cpp   | 14 +++++++++
 libc/test/src/math/smoke/remquobf16_test.cpp | 14 +++++++++
 4 files changed, 66 insertions(+), 2 deletions(-)
 create mode 100644 libc/test/src/math/smoke/modfbf16_test.cpp
 create mode 100644 libc/test/src/math/smoke/remquobf16_test.cpp

diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index b71d47568309b..ba8776f8d449a 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -2335,6 +2335,22 @@ add_fp_unittest(
     libc.src.__support.FPUtil.nearest_integer_operations
 )
 
+add_fp_unittest(
+  modfbf16_test
+  SUITE
+    libc-math-smoke-tests
+  SRCS
+    modfbf16_test.cpp
+  HDRS
+    ModfTest.h
+  DEPENDS
+    libc.src.math.modfbf16
+    libc.src.__support.CPP.algorithm
+    libc.src.__support.FPUtil.basic_operations
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.nearest_integer_operations
+)
+
 add_fp_unittest(
   fdimf_test
   SUITE
@@ -3475,6 +3491,20 @@ add_fp_unittest(
     libc.src.__support.FPUtil.fp_bits
 )
 
+add_fp_unittest(
+  remquobf16_test
+  SUITE
+    libc-math-smoke-tests
+  SRCS
+    remquobf16_test.cpp
+  HDRS
+    RemQuoTest.h
+  DEPENDS
+    libc.src.math.remquobf16
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.fp_bits
+)
+
 add_fp_unittest(
   hypotf_test
   SUITE
diff --git a/libc/test/src/math/smoke/ModfTest.h b/libc/test/src/math/smoke/ModfTest.h
index 24cfb1152c2e5..71f1c6bf4be28 100644
--- a/libc/test/src/math/smoke/ModfTest.h
+++ b/libc/test/src/math/smoke/ModfTest.h
@@ -76,10 +76,16 @@ class ModfTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
     EXPECT_FP_EQ(T(-0.75), func(T(-10.75), &integral));
     EXPECT_FP_EQ(integral, T(-10.0));
 
-    EXPECT_FP_EQ(T(0.125), func(T(100.125), &integral));
+    EXPECT_FP_EQ(T(0.125), func(T(31.125), &integral));
+    EXPECT_FP_EQ(integral, T(31.0));
+
+    EXPECT_FP_EQ(T(-0.125), func(T(-31.125), &integral));
+    EXPECT_FP_EQ(integral, T(-31.0));
+
+    EXPECT_FP_EQ(T(0.5), func(T(100.5), &integral));
     EXPECT_FP_EQ(integral, T(100.0));
 
-    EXPECT_FP_EQ(T(-0.125), func(T(-100.125), &integral));
+    EXPECT_FP_EQ(T(-0.5), func(T(-100.5), &integral));
     EXPECT_FP_EQ(integral, T(-100.0));
   }
 
diff --git a/libc/test/src/math/smoke/modfbf16_test.cpp b/libc/test/src/math/smoke/modfbf16_test.cpp
new file mode 100644
index 0000000000000..88ebed55222ca
--- /dev/null
+++ b/libc/test/src/math/smoke/modfbf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for modfbf16 --------------------------------------------===//
+//
+// 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 "ModfTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/modfbf16.h"
+
+LIST_MODF_TESTS(bfloat16, LIBC_NAMESPACE::modfbf16)
diff --git a/libc/test/src/math/smoke/remquobf16_test.cpp b/libc/test/src/math/smoke/remquobf16_test.cpp
new file mode 100644
index 0000000000000..3f754bbd28a41
--- /dev/null
+++ b/libc/test/src/math/smoke/remquobf16_test.cpp
@@ -0,0 +1,14 @@
+//===-- Unittests for remquobf16 ------------------------------------------===//
+//
+// 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 "RemQuoTest.h"
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/math/remquobf16.h"
+
+LIST_REMQUO_TESTS(bfloat16, LIBC_NAMESPACE::remquobf16)

>From 7711efd183b742886f46562260035c2cef776212 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 20 Aug 2025 03:46:08 +0530
Subject: [PATCH 3/6] 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 10d5b3a591d0d..f6f2740e52fe3 100644
--- a/libc/config/baremetal/aarch64/entrypoints.txt
+++ b/libc/config/baremetal/aarch64/entrypoints.txt
@@ -793,11 +793,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/baremetal/arm/entrypoints.txt b/libc/config/baremetal/arm/entrypoints.txt
index 785b84163701f..6f9ce31e4bb45 100644
--- a/libc/config/baremetal/arm/entrypoints.txt
+++ b/libc/config/baremetal/arm/entrypoints.txt
@@ -796,11 +796,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/baremetal/riscv/entrypoints.txt b/libc/config/baremetal/riscv/entrypoints.txt
index 2038f3e4952cf..ddca368e7175c 100644
--- a/libc/config/baremetal/riscv/entrypoints.txt
+++ b/libc/config/baremetal/riscv/entrypoints.txt
@@ -796,11 +796,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/darwin/aarch64/entrypoints.txt b/libc/config/darwin/aarch64/entrypoints.txt
index 707e8b1d43658..22b291ac6c2b7 100644
--- a/libc/config/darwin/aarch64/entrypoints.txt
+++ b/libc/config/darwin/aarch64/entrypoints.txt
@@ -626,11 +626,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/darwin/x86_64/entrypoints.txt b/libc/config/darwin/x86_64/entrypoints.txt
index db3b305d376b0..e69c24446403d 100644
--- a/libc/config/darwin/x86_64/entrypoints.txt
+++ b/libc/config/darwin/x86_64/entrypoints.txt
@@ -269,11 +269,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/gpu/amdgpu/entrypoints.txt b/libc/config/gpu/amdgpu/entrypoints.txt
index 76bda91f3b229..5630538547485 100644
--- a/libc/config/gpu/amdgpu/entrypoints.txt
+++ b/libc/config/gpu/amdgpu/entrypoints.txt
@@ -652,11 +652,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/gpu/nvptx/entrypoints.txt b/libc/config/gpu/nvptx/entrypoints.txt
index cae9d593b056d..c10cd8f454238 100644
--- a/libc/config/gpu/nvptx/entrypoints.txt
+++ b/libc/config/gpu/nvptx/entrypoints.txt
@@ -653,11 +653,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index 18853de2c13c1..ff4b3bdcbcdad 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -880,11 +880,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index 150e34a1fb195..8d81edf536b78 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -496,11 +496,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index 937ec4253299a..dbe7356510e2d 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -899,11 +899,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 23871c406d236..a24af935fa6b2 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -931,11 +931,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16
diff --git a/libc/config/windows/entrypoints.txt b/libc/config/windows/entrypoints.txt
index cc7c655280213..06868e1792dd4 100644
--- a/libc/config/windows/entrypoints.txt
+++ b/libc/config/windows/entrypoints.txt
@@ -342,11 +342,14 @@ list(APPEND TARGET_LIBM_ENTRYPOINTS
   libc.src.math.ldexpbf16
   libc.src.math.llogbbf16
   libc.src.math.logbbf16
+  libc.src.math.modfbf16
   libc.src.math.nanbf16
   libc.src.math.nextafterbf16
   libc.src.math.nextdownbf16
   libc.src.math.nexttowardbf16
   libc.src.math.nextupbf16
+  libc.src.math.remainderbf16
+  libc.src.math.remquobf16
   libc.src.math.roundbf16
   libc.src.math.roundevenbf16
   libc.src.math.setpayloadbf16

>From e52a7fa92f22e770c7398a0e31965ea44b08ea29 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 20 Aug 2025 03:47:06 +0530
Subject: [PATCH 4/6] docs: add {modf,remainder,remquo}bf16 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 5049ab65d00af..d4326665ea851 100644
--- a/libc/docs/headers/math/index.rst
+++ b/libc/docs/headers/math/index.rst
@@ -209,7 +209,7 @@ Basic Operations
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
 | lround           | |check|          | |check|         | |check|                | |check|              | |check|                |                        | 7.12.9.7               | F.10.6.7                   |
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| modf             | |check|          | |check|         | |check|                | |check|              | |check|                |                        | 7.12.6.18              | F.10.3.18                  |
+| modf             | |check|          | |check|         | |check|                | |check|              | |check|                | |check|                | 7.12.6.18              | F.10.3.18                  |
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
 | nan              | |check|          | |check|         | |check|                | |check|              | |check|                | |check|                | 7.12.11.2              | F.10.8.2                   |
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
@@ -223,9 +223,9 @@ Basic Operations
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
 | 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                   |
+| remainder        | |check|          | |check|         | |check|                | |check|              | |check|                | |check|                | 7.12.10.2              | F.10.7.2                   |
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
-| remquo           | |check|          | |check|         | |check|                | |check|              | |check|                |                        | 7.12.10.3              | F.10.7.3                   |
+| remquo           | |check|          | |check|         | |check|                | |check|              | |check|                | |check|                | 7.12.10.3              | F.10.7.3                   |
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+
 | rint             | |check|          | |check|         | |check|                | |check|              | |check|                |                        | 7.12.9.4               | F.10.6.4                   |
 +------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+------------------------+----------------------------+

>From 25674ef3b1b4874ba1fc7bd040ec9a7461aef891 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Wed, 20 Aug 2025 20:06:54 +0530
Subject: [PATCH 5/6] chore: remove fmodbf16 from CMakeLists.txt

Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>
---
 libc/src/math/generic/CMakeLists.txt | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 46de2e09d3ba9..dc9d101cc76c8 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -3879,20 +3879,6 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.generic.fmod
 )
 
-add_entrypoint_object(
-  fmodbf16
-  SRCS
-    fmodbf16.cpp
-  HDRS
-    ../fmodbf16.h
-  DEPENDS
-    libc.src.__support.common
-    libc.src.__support.FPUtil.bfloat16
-    libc.src.__support.FPUtil.generic.fmod
-    libc.src.__support.macros.config
-    libc.src.__support.macros.properties.types
-)
-
 add_entrypoint_object(
   fromfp
   SRCS

>From 5a76e0227d58ac89594f5058982a10e0db48bfd8 Mon Sep 17 00:00:00 2001
From: Krishna Pandey <kpandey81930 at gmail.com>
Date: Mon, 25 Aug 2025 02:39:58 +0530
Subject: [PATCH 6/6] fix: nits

Co-authored-by: OverMighty <its.overmighty at gmail.com>
---
 libc/src/math/CMakeLists.txt         | 1 -
 libc/src/math/generic/CMakeLists.txt | 2 --
 2 files changed, 3 deletions(-)

diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 6cc221178df94..61fd525a06d25 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -300,7 +300,6 @@ add_math_entrypoint_object(fmodf)
 add_math_entrypoint_object(fmodl)
 add_math_entrypoint_object(fmodf16)
 add_math_entrypoint_object(fmodf128)
-add_math_entrypoint_object(fmodbf16)
 
 add_math_entrypoint_object(frexp)
 add_math_entrypoint_object(frexpf)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index dc9d101cc76c8..f79f91fcdb7d4 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -2294,7 +2294,6 @@ add_entrypoint_object(
     libc.src.__support.macros.properties.types
 )
 
-
 add_entrypoint_object(
   fmin
   SRCS
@@ -3213,7 +3212,6 @@ add_entrypoint_object(
     libc.src.__support.macros.config
 )
 
-
 add_entrypoint_object(
   remainderf
   SRCS



More information about the llvm-branch-commits mailing list