[libc-commits] [libc] [libc] Add fminf128 and fmaxf128 implementations for Linux x86_64. (PR #79307)
via libc-commits
libc-commits at lists.llvm.org
Wed Jan 24 07:29:05 PST 2024
https://github.com/felixh5678 created https://github.com/llvm/llvm-project/pull/79307
None
>From 5dc153ecf889840855c69b97aa7e09bf4e115f8e Mon Sep 17 00:00:00 2001
From: Felix Hentschel <felix.hentschel1 at icloud.com>
Date: Wed, 24 Jan 2024 10:26:34 -0500
Subject: [PATCH] [libc] Add fminf128 and fmaxf128 implementations for Linux
x86_64.
---
libc/config/linux/x86_64/entrypoints.txt | 4 +++
libc/docs/math/index.rst | 4 +++
libc/spec/stdc.td | 2 ++
libc/src/math/CMakeLists.txt | 2 ++
libc/src/math/fmaxf128.h | 20 ++++++++++++++
libc/src/math/fminf128.h | 20 ++++++++++++++
libc/src/math/generic/CMakeLists.txt | 24 ++++++++++++++++
libc/src/math/generic/fmaxf128.cpp | 19 +++++++++++++
libc/src/math/generic/fminf128.cpp | 19 +++++++++++++
libc/test/src/math/smoke/CMakeLists.txt | 32 ++++++++++++++++++----
libc/test/src/math/smoke/FMaxTest.h | 10 +++----
libc/test/src/math/smoke/FMinTest.h | 10 +++----
libc/test/src/math/smoke/fmaxf128_test.cpp | 13 +++++++++
libc/test/src/math/smoke/fminf128_test.cpp | 13 +++++++++
14 files changed, 176 insertions(+), 16 deletions(-)
create mode 100644 libc/src/math/fmaxf128.h
create mode 100644 libc/src/math/fminf128.h
create mode 100644 libc/src/math/generic/fmaxf128.cpp
create mode 100644 libc/src/math/generic/fminf128.cpp
create mode 100644 libc/test/src/math/smoke/fmaxf128_test.cpp
create mode 100644 libc/test/src/math/smoke/fminf128_test.cpp
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index a1486ac689812b4..4fbb6f0f5872ae9 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -284,9 +284,11 @@ set(TARGET_LIBM_ENTRYPOINTS
libc.src.math.fmin
libc.src.math.fminf
libc.src.math.fminl
+ libc.src.math.fminf128
libc.src.math.fmax
libc.src.math.fmaxf
libc.src.math.fmaxl
+ libc.src.math.fmaxf128
libc.src.math.fmod
libc.src.math.fmodf
libc.src.math.frexp
@@ -375,6 +377,8 @@ if(LIBC_COMPILER_HAS_FLOAT128)
libc.src.math.copysignf128
libc.src.math.fabsf128
libc.src.math.sqrtf128
+ libc.src.math.fmaxf128
+ libc.src.math.fminf128
)
endif()
diff --git a/libc/docs/math/index.rst b/libc/docs/math/index.rst
index e28b8e87988441a..748247bb85d79c7 100644
--- a/libc/docs/math/index.rst
+++ b/libc/docs/math/index.rst
@@ -146,12 +146,16 @@ Basic Operations
+--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
| fmaxf | |check| | |check| | |check| | |check| | |check| | | | |check| | |check| | |check| | | |
+--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
+| fmaxf128 | |check| | | | | | | | | | | | |
++--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
| fmaxl | |check| | |check| | |check| | |check| | |check| | | | |check| | |check| | |check| | | |
+--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
| fmin | |check| | |check| | |check| | |check| | |check| | | | |check| | |check| | |check| | | |
+--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
| fminf | |check| | |check| | |check| | |check| | |check| | | | |check| | |check| | |check| | | |
+--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
+| fminf128 | |check| | | | | | | | | | | | |
++--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
| fminl | |check| | |check| | |check| | |check| | |check| | | | |check| | |check| | |check| | | |
+--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
| fmod | |check| | |check| | |check| | |check| | |check| | | | |check| | |check| | |check| | | |
diff --git a/libc/spec/stdc.td b/libc/spec/stdc.td
index 8c2feba23adbf3a..5b6f344588b7871 100644
--- a/libc/spec/stdc.td
+++ b/libc/spec/stdc.td
@@ -380,10 +380,12 @@ def StdC : StandardSpec<"stdc"> {
FunctionSpec<"fmin", RetValSpec<DoubleType>, [ArgSpec<DoubleType>, ArgSpec<DoubleType>]>,
FunctionSpec<"fminf", RetValSpec<FloatType>, [ArgSpec<FloatType>, ArgSpec<FloatType>]>,
FunctionSpec<"fminl", RetValSpec<LongDoubleType>, [ArgSpec<LongDoubleType>, ArgSpec<LongDoubleType>]>,
+ FunctionSpec<"fminf128", RetValSpec<Float128Type>, [ArgSpec<Float128Type>, ArgSpec<Float128Type>]>,
FunctionSpec<"fmax", RetValSpec<DoubleType>, [ArgSpec<DoubleType>, ArgSpec<DoubleType>]>,
FunctionSpec<"fmaxf", RetValSpec<FloatType>, [ArgSpec<FloatType>, ArgSpec<FloatType>]>,
FunctionSpec<"fmaxl", RetValSpec<LongDoubleType>, [ArgSpec<LongDoubleType>, ArgSpec<LongDoubleType>]>,
+ FunctionSpec<"fmaxf128", RetValSpec<Float128Type>, [ArgSpec<Float128Type>, ArgSpec<Float128Type>]>,
FunctionSpec<"fma", RetValSpec<DoubleType>, [ArgSpec<DoubleType>, ArgSpec<DoubleType>, ArgSpec<DoubleType>]>,
FunctionSpec<"fmaf", RetValSpec<FloatType>, [ArgSpec<FloatType>, ArgSpec<FloatType>, ArgSpec<FloatType>]>,
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 3097c4b3a82cc48..2b7eb3a05396b59 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -121,10 +121,12 @@ add_math_entrypoint_object(fmaf)
add_math_entrypoint_object(fmax)
add_math_entrypoint_object(fmaxf)
add_math_entrypoint_object(fmaxl)
+add_math_entrypoint_object(fmaxf128)
add_math_entrypoint_object(fmin)
add_math_entrypoint_object(fminf)
add_math_entrypoint_object(fminl)
+add_math_entrypoint_object(fminf128)
add_math_entrypoint_object(fmod)
add_math_entrypoint_object(fmodf)
diff --git a/libc/src/math/fmaxf128.h b/libc/src/math/fmaxf128.h
new file mode 100644
index 000000000000000..39eaaf616dd5d8e
--- /dev/null
+++ b/libc/src/math/fmaxf128.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fmaxf128 ----------------------*- 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_FMAXF128_H
+#define LLVM_LIBC_SRC_MATH_FMAXF128_H
+
+#include "src/__support/macros/properties/float.h"
+
+namespace LIBC_NAMESPACE {
+
+float128 fmaxf128(float128 x, float128 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMAXF128_H
diff --git a/libc/src/math/fminf128.h b/libc/src/math/fminf128.h
new file mode 100644
index 000000000000000..b3d1bec8e2ad925
--- /dev/null
+++ b/libc/src/math/fminf128.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for fminf128 ----------------------*- 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_FMINF128_H
+#define LLVM_LIBC_SRC_MATH_FMINF128_H
+
+#include "src/__support/macros/properties/float.h"
+
+namespace LIBC_NAMESPACE {
+
+float128 fminf128(float128 x, float128 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_FMINF128_H
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 8b32a3296bb87f6..edc04165a9879f4 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -1243,6 +1243,18 @@ add_entrypoint_object(
-O2
)
+add_entrypoint_object(
+ fminf128
+ SRCS
+ fminf128.cpp
+ HDRS
+ ../fminf128.h
+ DEPENDS
+ libc.src.__support.FPUtil.basic_operations
+ COMPILE_OPTIONS
+ -O2
+)
+
add_entrypoint_object(
fmax
SRCS
@@ -1279,6 +1291,18 @@ add_entrypoint_object(
-O2
)
+add_entrypoint_object(
+ fmaxf128
+ SRCS
+ fmaxf128.cpp
+ HDRS
+ ../fmaxf128.h
+ DEPENDS
+ libc.src.__support.FPUtil.basic_operations
+ COMPILE_OPTIONS
+ -O2
+)
+
add_entrypoint_object(
sqrt
SRCS
diff --git a/libc/src/math/generic/fmaxf128.cpp b/libc/src/math/generic/fmaxf128.cpp
new file mode 100644
index 000000000000000..096e4befeb79a49
--- /dev/null
+++ b/libc/src/math/generic/fmaxf128.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fmaxf128 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/fmaxf128.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float128, fmaxf128, (float128 x, float128 y)) {
+ return fputil::fmax(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/fminf128.cpp b/libc/src/math/generic/fminf128.cpp
new file mode 100644
index 000000000000000..084ed4c9931bc28
--- /dev/null
+++ b/libc/src/math/generic/fminf128.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of fminf128 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/fminf128.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float128, fminf128, (float128 x, float128 y)) {
+ return fputil::fmin(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index 03526e019c3e9ff..05f5a39beed5b8c 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -984,7 +984,6 @@ if(NOT LIBC_TARGET_ARCHITECTURE_IS_GPU)
HDRS
FMinTest.h
DEPENDS
- libc.include.math
libc.src.math.fminf
libc.src.__support.FPUtil.fp_bits
)
@@ -998,7 +997,6 @@ if(NOT LIBC_TARGET_ARCHITECTURE_IS_GPU)
HDRS
FMinTest.h
DEPENDS
- libc.include.math
libc.src.math.fmin
libc.src.__support.FPUtil.fp_bits
)
@@ -1012,11 +1010,23 @@ if(NOT LIBC_TARGET_ARCHITECTURE_IS_GPU)
HDRS
FMinTest.h
DEPENDS
- libc.include.math
libc.src.math.fminl
libc.src.__support.FPUtil.fp_bits
)
+ add_fp_unittest(
+ fminf128_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ fminf128_test.cpp
+ HDRS
+ FMinTest.h
+ DEPENDS
+ libc.src.math.fminf128
+ libc.src.__support.FPUtil.fp_bits
+ )
+
add_fp_unittest(
fmaxf_test
SUITE
@@ -1026,7 +1036,6 @@ if(NOT LIBC_TARGET_ARCHITECTURE_IS_GPU)
HDRS
FMaxTest.h
DEPENDS
- libc.include.math
libc.src.math.fmaxf
libc.src.__support.FPUtil.fp_bits
)
@@ -1040,7 +1049,6 @@ if(NOT LIBC_TARGET_ARCHITECTURE_IS_GPU)
HDRS
FMaxTest.h
DEPENDS
- libc.include.math
libc.src.math.fmax
libc.src.__support.FPUtil.fp_bits
)
@@ -1054,10 +1062,22 @@ if(NOT LIBC_TARGET_ARCHITECTURE_IS_GPU)
HDRS
FMaxTest.h
DEPENDS
- libc.include.math
libc.src.math.fmaxl
libc.src.__support.FPUtil.fp_bits
)
+
+ add_fp_unittest(
+ fmaxf128_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ fmaxf128_test.cpp
+ HDRS
+ FMaxTest.h
+ DEPENDS
+ libc.src.math.fmaxf128
+ libc.src.__support.FPUtil.fp_bits
+ )
endif()
add_fp_unittest(
diff --git a/libc/test/src/math/smoke/FMaxTest.h b/libc/test/src/math/smoke/FMaxTest.h
index 98edc8e971e8167..1a376af2e0b7b4b 100644
--- a/libc/test/src/math/smoke/FMaxTest.h
+++ b/libc/test/src/math/smoke/FMaxTest.h
@@ -9,8 +9,6 @@
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
-#include <math.h>
-
template <typename T> class FMaxTest : public LIBC_NAMESPACE::testing::Test {
DECLARE_SPECIAL_CONSTANTS(T)
@@ -56,11 +54,13 @@ template <typename T> class FMaxTest : public LIBC_NAMESPACE::testing::Test {
constexpr StorageType STEP = STORAGE_MAX / COUNT;
for (StorageType i = 0, v = 0, w = STORAGE_MAX; i <= COUNT;
++i, v += STEP, w -= STEP) {
- T x = FPBits(v).get_val(), y = FPBits(w).get_val();
- if (isnan(x) || isinf(x))
+ FPBits xbits(v), ybits(w);
+ if (xbits.is_inf_or_nan())
continue;
- if (isnan(y) || isinf(y))
+ if (ybits.is_inf_or_nan())
continue;
+ T x = xbits.get_val();
+ T y = ybits.get_val();
if ((x == 0) && (y == 0))
continue;
diff --git a/libc/test/src/math/smoke/FMinTest.h b/libc/test/src/math/smoke/FMinTest.h
index 834d757c85d047d..add2544424a016b 100644
--- a/libc/test/src/math/smoke/FMinTest.h
+++ b/libc/test/src/math/smoke/FMinTest.h
@@ -9,8 +9,6 @@
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
-#include <math.h>
-
template <typename T> class FMinTest : public LIBC_NAMESPACE::testing::Test {
DECLARE_SPECIAL_CONSTANTS(T)
@@ -56,11 +54,13 @@ template <typename T> class FMinTest : public LIBC_NAMESPACE::testing::Test {
constexpr StorageType STEP = STORAGE_MAX / COUNT;
for (StorageType i = 0, v = 0, w = STORAGE_MAX; i <= COUNT;
++i, v += STEP, w -= STEP) {
- T x = FPBits(v).get_val(), y = FPBits(w).get_val();
- if (isnan(x) || isinf(x))
+ FPBits xbits(v), ybits(w);
+ if (xbits.is_inf_or_nan())
continue;
- if (isnan(y) || isinf(y))
+ if (ybits.is_inf_or_nan())
continue;
+ T x = xbits.get_val();
+ T y = ybits.get_val();
if ((x == 0) && (y == 0))
continue;
diff --git a/libc/test/src/math/smoke/fmaxf128_test.cpp b/libc/test/src/math/smoke/fmaxf128_test.cpp
new file mode 100644
index 000000000000000..497cd05c623911f
--- /dev/null
+++ b/libc/test/src/math/smoke/fmaxf128_test.cpp
@@ -0,0 +1,13 @@
+//===-- Unittests for fmaxf128 --------------------------------------------===//
+//
+// 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 "FMaxTest.h"
+
+#include "src/math/fmaxf128.h"
+
+LIST_FMAX_TESTS(float128, LIBC_NAMESPACE::fmaxf128)
diff --git a/libc/test/src/math/smoke/fminf128_test.cpp b/libc/test/src/math/smoke/fminf128_test.cpp
new file mode 100644
index 000000000000000..f1e9ed4e6ac8ee7
--- /dev/null
+++ b/libc/test/src/math/smoke/fminf128_test.cpp
@@ -0,0 +1,13 @@
+//===-- Unittests for fminf128 --------------------------------------------===//
+//
+// 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 "FMinTest.h"
+
+#include "src/math/fminf128.h"
+
+LIST_FMIN_TESTS(float128, LIBC_NAMESPACE::fminf128)
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