[libc][math] Refactor copysign family to header-only

libc/shared/math.h

@@ -72,6 +72,12 @@
 #include "math/ceilf128.h"
 #include "math/ceilf16.h"
 #include "math/ceill.h"
+#include "math/copysign.h"
+#include "math/copysignbf16.h"
+#include "math/copysignf.h"
+#include "math/copysignf128.h"
+#include "math/copysignf16.h"
+#include "math/copysignl.h"
 #include "math/cos.h"
 #include "math/cosf.h"
 #include "math/cosf16.h"

libc/shared/math/copysign.h

@@ -0,0 +1,23 @@
+//===-- Shared copysign 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_COPYSIGN_H
+#define LLVM_LIBC_SHARED_MATH_COPYSIGN_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/copysign.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::copysign;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_COPYSIGN_H

libc/shared/math/copysignbf16.h

@@ -0,0 +1,23 @@
+//===-- Shared copysignbf16 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_COPYSIGNBF16_H
+#define LLVM_LIBC_SHARED_MATH_COPYSIGNBF16_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/copysignbf16.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::copysignbf16;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_COPYSIGNBF16_H

libc/shared/math/copysignf.h

@@ -0,0 +1,23 @@
+//===-- Shared copysignf 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_COPYSIGNF_H
+#define LLVM_LIBC_SHARED_MATH_COPYSIGNF_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/copysignf.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::copysignf;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_COPYSIGNF_H

libc/shared/math/copysignf128.h

@@ -0,0 +1,29 @@
+//===-- Shared copysignf128 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_COPYSIGNF128_H
+#define LLVM_LIBC_SHARED_MATH_COPYSIGNF128_H
+
+#include "include/llvm-libc-types/float128.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT128
+
+#include "shared/libc_common.h"
+#include "src/__support/math/copysignf128.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::copysignf128;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT128
+
+#endif // LLVM_LIBC_SHARED_MATH_COPYSIGNF128_H

libc/shared/math/copysignf16.h

@@ -0,0 +1,29 @@
+//===-- Shared copysignf16 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_COPYSIGNF16_H
+#define LLVM_LIBC_SHARED_MATH_COPYSIGNF16_H
+
+#include "include/llvm-libc-macros/float16-macros.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT16
+
+#include "shared/libc_common.h"
+#include "src/__support/math/copysignf16.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::copysignf16;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT16
+
+#endif // LLVM_LIBC_SHARED_MATH_COPYSIGNF16_H

libc/shared/math/copysignl.h

@@ -0,0 +1,23 @@
+//===-- Shared copysignl 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_COPYSIGNL_H
+#define LLVM_LIBC_SHARED_MATH_COPYSIGNL_H
+
+#include "shared/libc_common.h"
+#include "src/__support/math/copysignl.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace shared {
+
+using math::copysignl;
+
+} // namespace shared
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SHARED_MATH_COPYSIGNL_H

libc/src/__support/FPUtil/ManipulationFunctions.h

@@ -74,7 +74,7 @@ LIBC_INLINE T modf(T x, T &iptr) {
 }
 
 template <typename T, cpp::enable_if_t<cpp::is_floating_point_v<T>, int> = 0>
-LIBC_INLINE T copysign(T x, T y) {
+LIBC_INLINE constexpr T copysign(T x, T y) {
   FPBits<T> xbits(x);
   xbits.set_sign(FPBits<T>(y).sign());
   return xbits.get_val();

libc/src/__support/math/CMakeLists.txt

@@ -827,6 +827,71 @@ add_header_library(
     libc.src.__support.math_extras
 )
 
+add_header_library(
+  copysign
+  HDRS
+    copysign.h
+  DEPENDS
+    libc.src.__support.FPUtil.manipulation_functions
+    libc.src.__support.macros.config
+  FLAGS
+    MISC_MATH_BASIC_OPS_OPT
+)
+
+add_header_library(
+  copysignbf16
+  HDRS
+    copysignbf16.h
+  DEPENDS
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.manipulation_functions
+    libc.src.__support.macros.config
+  FLAGS
+    MISC_MATH_BASIC_OPS_OPT
+)
+
+add_header_library(
+  copysignf
+  HDRS
+    copysignf.h
+  DEPENDS
+    libc.src.__support.FPUtil.manipulation_functions
+    libc.src.__support.macros.config
+  FLAGS
+    MISC_MATH_BASIC_OPS_OPT
+)
+
+add_header_library(
+  copysignf128
+  HDRS
+    copysignf128.h
+  DEPENDS
+    libc.include.llvm-libc-types.float128
+    libc.src.__support.FPUtil.manipulation_functions
+    libc.src.__support.macros.config
+)
+
+add_header_library(
+  copysignf16
+  HDRS
+    copysignf16.h
+  DEPENDS
+    libc.include.llvm-libc-macros.float16_macros
+    libc.src.__support.FPUtil.manipulation_functions
+    libc.src.__support.macros.config
+  FLAGS
+    MISC_MATH_BASIC_OPS_OPT
+)
+
+add_header_library(
+  copysignl
+  HDRS
+    copysignl.h
+  DEPENDS
+    libc.src.__support.FPUtil.manipulation_functions
+    libc.src.__support.macros.config
+)
+
 add_header_library(
   cos_integer_eval
   HDRS

libc/src/__support/math/copysign.h

@@ -0,0 +1,30 @@
+//===-- Implementation header for copysign ----------------------*- 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_COPYSIGN_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_COPYSIGN_H
+
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace math {
+
+LIBC_INLINE LIBC_CONSTEXPR double copysign(double x, double y) {
+#if defined(__LIBC_MISC_MATH_BASIC_OPS_OPT) &&                                 \
+    !defined(LIBC_HAS_CONSTANT_EVALUATION)
+  return __builtin_copysign(x, y);
+#else
+  return fputil::copysign(x, y);
+#endif
+}
+
+} // namespace math
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_MATH_COPYSIGN_H

libc/src/__support/math/copysignbf16.h

@@ -0,0 +1,26 @@
+//===-- 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___SUPPORT_MATH_COPYSIGNBF16_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_COPYSIGNBF16_H
+
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace math {
+
+LIBC_INLINE constexpr bfloat16 copysignbf16(bfloat16 x, bfloat16 y) {
+  return fputil::copysign(x, y);
+}
+
+} // namespace math
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_MATH_COPYSIGNBF16_H

libc/src/__support/math/copysignf.h

@@ -0,0 +1,30 @@
+//===-- Implementation header for copysignf ---------------------*- 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_COPYSIGNF_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_COPYSIGNF_H
+
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace math {
+
+LIBC_INLINE LIBC_CONSTEXPR float copysignf(float x, float y) {
+#if defined(__LIBC_MISC_MATH_BASIC_OPS_OPT) &&                                 \
+    !defined(LIBC_HAS_CONSTANT_EVALUATION)
+  return __builtin_copysignf(x, y);
+#else
+  return fputil::copysign(x, y);
+#endif
+}
+
+} // namespace math
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC___SUPPORT_MATH_COPYSIGNF_H

libc/src/__support/math/copysignf128.h

@@ -0,0 +1,31 @@
+//===-- Implementation header for copysignf128 ------------------*- 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_COPYSIGNF128_H
+#define LLVM_LIBC_SRC___SUPPORT_MATH_COPYSIGNF128_H
+
+#include "include/llvm-libc-types/float128.h"
+
+#ifdef LIBC_TYPES_HAS_FLOAT128
+
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+namespace math {
+
+LIBC_INLINE constexpr float128 copysignf128(float128 x, float128 y) {
+  return fputil::copysign(x, y);
+}
+
+} // namespace math
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_FLOAT128
+
+#endif // LLVM_LIBC_SRC___SUPPORT_MATH_COPYSIGNF128_H