[libc-commits] [libc] [llvm] [libc][math] Refactor fmod-modf family to header-only (PR #195406)
via libc-commits
libc-commits at lists.llvm.org
Fri May 1 20:22:17 PDT 2026
llvmorg-github-actions[bot] wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-libc
Author: Anonmiraj (AnonMiraj)
<details>
<summary>Changes</summary>
Refactors the fmod-modf math family to be header-only.
part of: #<!-- -->147386
Target Functions:
- fmod
- fmodbf16
- fmodf
- fmodf128
- fmodf16
- fmodl
- modf
- modfbf16
- modff
- modff128
- modff16
- modfl
---
Patch is 53.58 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/195406.diff
44 Files Affected:
- (modified) libc/shared/math.h (+12)
- (added) libc/shared/math/fmod.h (+23)
- (added) libc/shared/math/fmodbf16.h (+23)
- (added) libc/shared/math/fmodf.h (+23)
- (added) libc/shared/math/fmodf128.h (+29)
- (added) libc/shared/math/fmodf16.h (+29)
- (added) libc/shared/math/fmodl.h (+23)
- (added) libc/shared/math/modf.h (+23)
- (added) libc/shared/math/modfbf16.h (+23)
- (added) libc/shared/math/modff.h (+23)
- (added) libc/shared/math/modff128.h (+29)
- (added) libc/shared/math/modff16.h (+29)
- (added) libc/shared/math/modfl.h (+23)
- (modified) libc/src/__support/FPUtil/generic/FMod.h (+5-5)
- (modified) libc/src/__support/math/CMakeLists.txt (+113)
- (added) libc/src/__support/math/fmod.h (+25)
- (added) libc/src/__support/math/fmodbf16.h (+26)
- (added) libc/src/__support/math/fmodf.h (+25)
- (added) libc/src/__support/math/fmodf128.h (+31)
- (added) libc/src/__support/math/fmodf16.h (+31)
- (added) libc/src/__support/math/fmodl.h (+25)
- (added) libc/src/__support/math/modf.h (+25)
- (added) libc/src/__support/math/modfbf16.h (+26)
- (added) libc/src/__support/math/modff.h (+25)
- (added) libc/src/__support/math/modff128.h (+31)
- (added) libc/src/__support/math/modff16.h (+31)
- (added) libc/src/__support/math/modfl.h (+25)
- (modified) libc/src/math/generic/CMakeLists.txt (+12-24)
- (modified) libc/src/math/generic/fmod.cpp (+2-4)
- (modified) libc/src/math/generic/fmodbf16.cpp (+2-5)
- (modified) libc/src/math/generic/fmodf.cpp (+2-4)
- (modified) libc/src/math/generic/fmodf128.cpp (+2-4)
- (modified) libc/src/math/generic/fmodf16.cpp (+2-4)
- (modified) libc/src/math/generic/fmodl.cpp (+2-4)
- (modified) libc/src/math/generic/modf.cpp (+2-4)
- (modified) libc/src/math/generic/modfbf16.cpp (+2-5)
- (modified) libc/src/math/generic/modff.cpp (+2-4)
- (modified) libc/src/math/generic/modff128.cpp (+2-4)
- (modified) libc/src/math/generic/modff16.cpp (+2-4)
- (modified) libc/src/math/generic/modfl.cpp (+2-4)
- (modified) libc/test/shared/CMakeLists.txt (+24)
- (modified) libc/test/shared/shared_math_constexpr_test.cpp (+8)
- (modified) libc/test/shared/shared_math_test.cpp (+29)
- (modified) utils/bazel/llvm-project-overlay/libc/BUILD.bazel (+157-10)
``````````diff
diff --git a/libc/shared/math.h b/libc/shared/math.h
index 6d2b573244c0c..7b34492586467 100644
--- a/libc/shared/math.h
+++ b/libc/shared/math.h
@@ -211,6 +211,12 @@
#include "math/fminimumf16.h"
#include "math/fminimuml.h"
#include "math/fminl.h"
+#include "math/fmod.h"
+#include "math/fmodbf16.h"
+#include "math/fmodf.h"
+#include "math/fmodf128.h"
+#include "math/fmodf16.h"
+#include "math/fmodl.h"
#include "math/frexpf.h"
#include "math/frexpf128.h"
#include "math/frexpf16.h"
@@ -262,6 +268,12 @@
#include "math/logbl.h"
#include "math/logf.h"
#include "math/logf16.h"
+#include "math/modf.h"
+#include "math/modfbf16.h"
+#include "math/modff.h"
+#include "math/modff128.h"
+#include "math/modff16.h"
+#include "math/modfl.h"
#include "math/nextafter.h"
#include "math/nextafterbf16.h"
#include "math/nextafterf.h"
diff --git a/libc/shared/math/fmod.h b/libc/shared/math/fmod.h
new file mode 100644
index 0000000000000..7c90e2392fe49
--- /dev/null
+++ b/libc/shared/math/fmod.h
@@ -0,0 +1,23 @@
+//===-- Shared fmod function ------------------------------------*- 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_SHARED_MATH_FMOD_H
+#define LLVM_LIBC_SHARED_MATH_FMOD_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/fmod.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::fmod;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_FMOD_H
diff --git a/libc/shared/math/fmodbf16.h b/libc/shared/math/fmodbf16.h
new file mode 100644
index 0000000000000..71f1f2f7f4c19
--- /dev/null
+++ b/libc/shared/math/fmodbf16.h
@@ -0,0 +1,23 @@
+//===-- Shared fmodbf16 function --------------------------------*- 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_SHARED_MATH_FMODBF16_H
+#define LLVM_LIBC_SHARED_MATH_FMODBF16_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/fmodbf16.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::fmodbf16;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_FMODBF16_H
diff --git a/libc/shared/math/fmodf.h b/libc/shared/math/fmodf.h
new file mode 100644
index 0000000000000..bec012c77a9a3
--- /dev/null
+++ b/libc/shared/math/fmodf.h
@@ -0,0 +1,23 @@
+//===-- Shared fmodf function -----------------------------------*- 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_SHARED_MATH_FMODF_H
+#define LLVM_LIBC_SHARED_MATH_FMODF_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/fmodf.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::fmodf;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_FMODF_H
diff --git a/libc/shared/math/fmodf128.h b/libc/shared/math/fmodf128.h
new file mode 100644
index 0000000000000..9d1c48477d79e
--- /dev/null
+++ b/libc/shared/math/fmodf128.h
@@ -0,0 +1,29 @@
+//===-- Shared fmodf128 function --------------------------------*- 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_SHARED_MATH_FMODF128_H
+#define LLVM_LIBC_SHARED_MATH_FMODF128_H
+
+#include "include/llvm-libc-types/float128.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT128
+
+#include "shared/libc_common.h"
+#include "src/__support/math/fmodf128.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::fmodf128;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT128
+
+#endif // LLVM_LIBC_SHARED_MATH_FMODF128_H
diff --git a/libc/shared/math/fmodf16.h b/libc/shared/math/fmodf16.h
new file mode 100644
index 0000000000000..e2944fddb5a3d
--- /dev/null
+++ b/libc/shared/math/fmodf16.h
@@ -0,0 +1,29 @@
+//===-- Shared fmodf16 function ---------------------------------*- 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_SHARED_MATH_FMODF16_H
+#define LLVM_LIBC_SHARED_MATH_FMODF16_H
+
+#include "include/llvm-libc-macros/float16-macros.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT16
+
+#include "shared/libc_common.h"
+#include "src/__support/math/fmodf16.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::fmodf16;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT16
+
+#endif // LLVM_LIBC_SHARED_MATH_FMODF16_H
diff --git a/libc/shared/math/fmodl.h b/libc/shared/math/fmodl.h
new file mode 100644
index 0000000000000..6b61bbf57a175
--- /dev/null
+++ b/libc/shared/math/fmodl.h
@@ -0,0 +1,23 @@
+//===-- Shared fmodl function -----------------------------------*- 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_SHARED_MATH_FMODL_H
+#define LLVM_LIBC_SHARED_MATH_FMODL_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/fmodl.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::fmodl;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_FMODL_H
diff --git a/libc/shared/math/modf.h b/libc/shared/math/modf.h
new file mode 100644
index 0000000000000..3b16dac78ea3b
--- /dev/null
+++ b/libc/shared/math/modf.h
@@ -0,0 +1,23 @@
+//===-- Shared modf function ------------------------------------*- 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_SHARED_MATH_MODF_H
+#define LLVM_LIBC_SHARED_MATH_MODF_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/modf.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::modf;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_MODF_H
diff --git a/libc/shared/math/modfbf16.h b/libc/shared/math/modfbf16.h
new file mode 100644
index 0000000000000..3cecf890bb588
--- /dev/null
+++ b/libc/shared/math/modfbf16.h
@@ -0,0 +1,23 @@
+//===-- Shared modfbf16 function --------------------------------*- 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_SHARED_MATH_MODFBF16_H
+#define LLVM_LIBC_SHARED_MATH_MODFBF16_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/modfbf16.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::modfbf16;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_MODFBF16_H
diff --git a/libc/shared/math/modff.h b/libc/shared/math/modff.h
new file mode 100644
index 0000000000000..23752ba41daf6
--- /dev/null
+++ b/libc/shared/math/modff.h
@@ -0,0 +1,23 @@
+//===-- Shared modff function -----------------------------------*- 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_SHARED_MATH_MODFF_H
+#define LLVM_LIBC_SHARED_MATH_MODFF_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/modff.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::modff;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_MODFF_H
diff --git a/libc/shared/math/modff128.h b/libc/shared/math/modff128.h
new file mode 100644
index 0000000000000..bbc6b8e4d09c0
--- /dev/null
+++ b/libc/shared/math/modff128.h
@@ -0,0 +1,29 @@
+//===-- Shared modff128 function --------------------------------*- 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_SHARED_MATH_MODFF128_H
+#define LLVM_LIBC_SHARED_MATH_MODFF128_H
+
+#include "include/llvm-libc-types/float128.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT128
+
+#include "shared/libc_common.h"
+#include "src/__support/math/modff128.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::modff128;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT128
+
+#endif // LLVM_LIBC_SHARED_MATH_MODFF128_H
diff --git a/libc/shared/math/modff16.h b/libc/shared/math/modff16.h
new file mode 100644
index 0000000000000..6cefd1dc99ae1
--- /dev/null
+++ b/libc/shared/math/modff16.h
@@ -0,0 +1,29 @@
+//===-- Shared modff16 function ---------------------------------*- 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_SHARED_MATH_MODFF16_H
+#define LLVM_LIBC_SHARED_MATH_MODFF16_H
+
+#include "include/llvm-libc-macros/float16-macros.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT16
+
+#include "shared/libc_common.h"
+#include "src/__support/math/modff16.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::modff16;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT16
+
+#endif // LLVM_LIBC_SHARED_MATH_MODFF16_H
diff --git a/libc/shared/math/modfl.h b/libc/shared/math/modfl.h
new file mode 100644
index 0000000000000..9b900797d114f
--- /dev/null
+++ b/libc/shared/math/modfl.h
@@ -0,0 +1,23 @@
+//===-- Shared modfl function -----------------------------------*- 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_SHARED_MATH_MODFL_H
+#define LLVM_LIBC_SHARED_MATH_MODFL_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/modfl.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::modfl;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_MODFL_H
diff --git a/libc/src/__support/FPUtil/generic/FMod.h b/libc/src/__support/FPUtil/generic/FMod.h
index 30d6472085f6f..b74b8b7d1b18d 100644
--- a/libc/src/__support/FPUtil/generic/FMod.h
+++ b/libc/src/__support/FPUtil/generic/FMod.h
@@ -170,7 +170,7 @@ class FMod {
using FPB = FPBits<T>;
using StorageType = typename FPB::StorageType;
- LIBC_INLINE static bool pre_check(T x, T y, T &out) {
+ LIBC_INLINE static constexpr bool pre_check(T x, T y, T &out) {
using FPB = fputil::FPBits<T>;
const T quiet_nan = FPB::quiet_nan().get_val();
FPB sx(x), sy(y);
@@ -200,8 +200,8 @@ class FMod {
if (LIBC_LIKELY(sx.uintval() <= sy.uintval())) {
if (sx.uintval() < sy.uintval())
- return sx; // |x|<|y| return x
- return FPB::zero(); // |x|=|y| return 0.0
+ return sx; // |x|<|y| return x
+ return FPB::zero(); // |x|=|y| return 0.0
}
int e_x = sx.get_biased_exponent();
@@ -276,8 +276,8 @@ class FMod {
}
public:
- LIBC_INLINE static T eval(T x, T y) {
- if (T out; LIBC_UNLIKELY(pre_check(x, y, out)))
+ LIBC_INLINE static constexpr T eval(T x, T y) {
+ if (T out{}; LIBC_UNLIKELY(pre_check(x, y, out)))
return out;
FPB sx(x), sy(y);
Sign sign = sx.sign();
diff --git a/libc/src/__support/math/CMakeLists.txt b/libc/src/__support/math/CMakeLists.txt
index dad34b0023154..d36b6d9196e75 100644
--- a/libc/src/__support/math/CMakeLists.txt
+++ b/libc/src/__support/math/CMakeLists.txt
@@ -1157,6 +1157,62 @@ add_header_library(
libc.src.__support.macros.config
)
+add_header_library(
+ fmod
+ HDRS
+ fmod.h
+ DEPENDS
+ libc.src.__support.FPUtil.generic.fmod
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ fmodbf16
+ HDRS
+ fmodbf16.h
+ DEPENDS
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.generic.fmod
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ fmodf
+ HDRS
+ fmodf.h
+ DEPENDS
+ libc.src.__support.FPUtil.generic.fmod
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ fmodf128
+ HDRS
+ fmodf128.h
+ DEPENDS
+ libc.include.llvm-libc-types.float128
+ libc.src.__support.FPUtil.generic.fmod
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ fmodf16
+ HDRS
+ fmodf16.h
+ DEPENDS
+ libc.include.llvm-libc-macros.float16_macros
+ libc.src.__support.FPUtil.generic.fmod
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ fmodl
+ HDRS
+ fmodl.h
+ DEPENDS
+ libc.src.__support.FPUtil.generic.fmod
+ libc.src.__support.macros.config
+)
add_header_library(
llogbbf16
@@ -1178,6 +1234,63 @@ add_header_library(
libc.src.__support.macros.config
)
+add_header_library(
+ modf
+ HDRS
+ modf.h
+ DEPENDS
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ modfbf16
+ HDRS
+ modfbf16.h
+ DEPENDS
+ libc.src.__support.FPUtil.bfloat16
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ modff
+ HDRS
+ modff.h
+ DEPENDS
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ modff128
+ HDRS
+ modff128.h
+ DEPENDS
+ libc.include.llvm-libc-types.float128
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ modff16
+ HDRS
+ modff16.h
+ DEPENDS
+ libc.include.llvm-libc-macros.float16_macros
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+)
+
+add_header_library(
+ modfl
+ HDRS
+ modfl.h
+ DEPENDS
+ libc.src.__support.FPUtil.manipulation_functions
+ libc.src.__support.macros.config
+)
+
add_header_library(
sincos_integer_utils
HDRS
diff --git a/libc/src/__support/math/fmod.h b/libc/src/__support/math/fmod.h
new file mode 100644
index 0000000000000..79c48708d8aec
--- /dev/null
+++ b/libc/src/__support/math/fmod.h
@@ -0,0 +1,25 @@
+//===-- Implementation header for fmod --------------------------*- 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___SUPPORT_MATH_FMOD_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_FMOD_H
+
+#include "src/__support/FPUtil/generic/FMod.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace math {
+
+LIBC_INLINE constexpr double fmod(double x, double y) {
+ return fputil::generic::FMod<double>::eval(x, y);
+}
+
+} // namespace math
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_MATH_FMOD_H
diff --git a/libc/src/__support/math/fmodbf16.h b/libc/src/__support/math/fmodbf16.h
new file mode 100644
index 0000000000000..8f0bfbce4d16d
--- /dev/null
+++ b/libc/src/__support/math/fmodbf16.h
@@ -0,0 +1,26 @@
+//===-- Implementation header for fmodbf16 ----------------------*- 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___SUPPORT_MATH_FMODBF16_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_FMODBF16_H
+
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/FPUtil/generic/FMod.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace math {
+
+LIBC_INLINE constexpr bfloat16 fmodbf16(bfloat16 x, bfloat16 y) {
+ return fputil::generic::FMod<bfloat16>::eval(x, y);
+}
+
+} // namespace math
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_MATH_FMODBF16_H
diff --git a/libc/src/__support/math/fmodf.h b/libc/src/__support/math/fmodf.h
new file mode 100644
index 0000000000000..0209da81539d5
--- /dev/null
+++ b/libc/src/__support/math/fmodf.h
@@ -0,0 +1,25 @@
+//===-- Implementation header for fmodf -------------------------*- 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___SUPPORT_MATH_FMODF_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_FMODF_H
+
+#include "src/__support/FPUtil/generic/FMod.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace math {
+
+LIBC_INLINE constexpr float fmodf(float x, float y) {
+ return fputil::generic::FMod<float, uint64_t>::eval(x, y);
+}
+
+} // namespace math
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_MATH_FMODF_H
diff --git a/libc/src/__support/math/fmodf128.h b/libc/src/__support/math/fmodf128.h
new file mode 100644
index 0000000000000..b15c1e17caab8
--- /dev/null
+++ b/libc/src/__support/math/fmodf128.h
@@ -0,0 +1,31 @@
+//===-- Implementation header for fmodf128 ----------------------*- 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___SUPPORT_MATH_FMODF128_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_FMODF128_H
+
+#include "include/llvm-libc-types/float128.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT128
+
+#include "src/__support/FPUtil/generic/FMod.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace math {
+
+LIBC_INLINE constexpr float128 fmodf128(float128 x, float128 y) {
+ return fputil::generic::FMod<float128>::eval(x, y);
+}
+
+} // namespace math
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT128
+
+#endif // LLVM_LIBC_SRC___SUPPORT_MATH_FMODF128_H
diff --git ...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/195406
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