[libc-commits] [libc] [libc][math] Adds entrypoint and test for `nextafterf128` (PR #84882)
Michael Flanders via libc-commits
libc-commits at lists.llvm.org
Tue Mar 12 00:31:33 PDT 2024
https://github.com/Flandini created https://github.com/llvm/llvm-project/pull/84882
Continuing #84689. Wanted to make sure this looks okay before repeating for the others.
I am not sure how the optimization level is decided on in [libc/src/math/generic/CMakeLists.txt](https://github.com/llvm/llvm-project/compare/main...Flandini:nextafterf128?expand=1#diff-7f0c9267147f9b892c5f01e0dd0bc3ccc0cb71a088b1e16378680e987a4dc992), so I went with `-O2` like the other `nextafter*` functions.
cc @lntue for review.
>From 07942e696dcbbc462806b2b37b3e4f288fdf5d03 Mon Sep 17 00:00:00 2001
From: Michael Flanders <mkf727 at cs.washington.edu>
Date: Tue, 12 Mar 2024 07:26:39 +0000
Subject: [PATCH] adds entrypoint and test for nextafterf128
---
libc/config/linux/aarch64/entrypoints.txt | 1 +
libc/config/linux/riscv/entrypoints.txt | 1 +
libc/config/linux/x86_64/entrypoints.txt | 1 +
libc/docs/math/index.rst | 2 ++
libc/spec/stdc.td | 1 +
libc/src/math/CMakeLists.txt | 1 +
libc/src/math/generic/CMakeLists.txt | 13 ++++++++++++
libc/src/math/generic/nextafterf128.cpp | 19 ++++++++++++++++++
libc/src/math/nextafterf128.h | 20 +++++++++++++++++++
libc/test/src/math/CMakeLists.txt | 15 ++++++++++++++
libc/test/src/math/nextafterf128_test.cpp | 13 ++++++++++++
libc/test/src/math/smoke/CMakeLists.txt | 15 ++++++++++++++
.../src/math/smoke/nextafterf128_test.cpp | 13 ++++++++++++
13 files changed, 115 insertions(+)
create mode 100644 libc/src/math/generic/nextafterf128.cpp
create mode 100644 libc/src/math/nextafterf128.h
create mode 100644 libc/test/src/math/nextafterf128_test.cpp
create mode 100644 libc/test/src/math/smoke/nextafterf128_test.cpp
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index c24703840183af..24e5e86559a4d9 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -435,6 +435,7 @@ if(LIBC_TYPES_HAS_FLOAT128)
libc.src.math.lrintf128
libc.src.math.lroundf128
libc.src.math.modff128
+ libc.src.math.nextafterf128
libc.src.math.rintf128
libc.src.math.roundf128
libc.src.math.sqrtf128
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index f7a65615115f34..cb3eaee18eca9d 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -443,6 +443,7 @@ if(LIBC_TYPES_HAS_FLOAT128)
libc.src.math.lrintf128
libc.src.math.lroundf128
libc.src.math.modff128
+ libc.src.math.nextafterf128
libc.src.math.rintf128
libc.src.math.roundf128
libc.src.math.sqrtf128
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index b51227e5f25d74..0fca5d49aaaacf 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -478,6 +478,7 @@ if(LIBC_TYPES_HAS_FLOAT128)
libc.src.math.lrintf128
libc.src.math.lroundf128
libc.src.math.modff128
+ libc.src.math.nextafterf128
libc.src.math.rintf128
libc.src.math.roundf128
libc.src.math.sqrtf128
diff --git a/libc/docs/math/index.rst b/libc/docs/math/index.rst
index 7f2a1b2f3e2824..7467135d301e45 100644
--- a/libc/docs/math/index.rst
+++ b/libc/docs/math/index.rst
@@ -269,6 +269,8 @@ Basic Operations
+--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
| nextafterl | |check| | |check| | |check| | |check| | |check| | | | |check| | |check| | |check| | | |
+--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
+| nextafterf128| |check| | |check| | | |check| | | | | | | | | |
++--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
| nexttoward | |check| | |check| | |check| | |check| | |check| | | | |check| | |check| | |check| | | |
+--------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
| nexttowardf | |check| | |check| | |check| | |check| | |check| | | | |check| | |check| | |check| | | |
diff --git a/libc/spec/stdc.td b/libc/spec/stdc.td
index d91f5c1f723345..9d0519a5bb0090 100644
--- a/libc/spec/stdc.td
+++ b/libc/spec/stdc.td
@@ -529,6 +529,7 @@ def StdC : StandardSpec<"stdc"> {
FunctionSpec<"nextafterf", RetValSpec<FloatType>, [ArgSpec<FloatType>, ArgSpec<FloatType>]>,
FunctionSpec<"nextafter", RetValSpec<DoubleType>, [ArgSpec<DoubleType>, ArgSpec<DoubleType>]>,
FunctionSpec<"nextafterl", RetValSpec<LongDoubleType>, [ArgSpec<LongDoubleType>, ArgSpec<LongDoubleType>]>,
+ GuardedFunctionSpec<"nextafterf128", RetValSpec<Float128Type>, [ArgSpec<Float128Type>, ArgSpec<Float128Type>], "LIBC_TYPES_HAS_FLOAT128">,
FunctionSpec<"nexttowardf", RetValSpec<FloatType>, [ArgSpec<FloatType>, ArgSpec<LongDoubleType>]>,
FunctionSpec<"nexttoward", RetValSpec<DoubleType>, [ArgSpec<DoubleType>, ArgSpec<LongDoubleType>]>,
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 6c06d383ec2b04..938411518a0df8 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -196,6 +196,7 @@ add_math_entrypoint_object(nearbyintl)
add_math_entrypoint_object(nextafter)
add_math_entrypoint_object(nextafterf)
add_math_entrypoint_object(nextafterl)
+add_math_entrypoint_object(nextafterf128)
add_math_entrypoint_object(nexttoward)
add_math_entrypoint_object(nexttowardf)
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index 933a05dad157c9..3bdbd06699e515 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -1816,6 +1816,19 @@ add_entrypoint_object(
-O2
)
+add_entrypoint_object(
+ nextafterf128
+ SRCS
+ nextafterf128.cpp
+ HDRS
+ ../nextafterf128.h
+ DEPENDS
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.manipulation_functions
+ COMPILE_OPTIONS
+ -O2
+)
+
add_entrypoint_object(
nexttoward
SRCS
diff --git a/libc/src/math/generic/nextafterf128.cpp b/libc/src/math/generic/nextafterf128.cpp
new file mode 100644
index 00000000000000..905c89022ba108
--- /dev/null
+++ b/libc/src/math/generic/nextafterf128.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of nextafterf128 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/nextafterf128.h"
+#include "src/__support/FPUtil/ManipulationFunctions.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float128, nextafterf128, (float128 x, float128 y)) {
+ return fputil::nextafter(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/nextafterf128.h b/libc/src/math/nextafterf128.h
new file mode 100644
index 00000000000000..a404d33810ec2d
--- /dev/null
+++ b/libc/src/math/nextafterf128.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for nextafterf128 ------------------*- 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_NEXTAFTERF128_H
+#define LLVM_LIBC_SRC_MATH_NEXTAFTERF128_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float128 nextafterf128(float128 x, float128 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_NEXTAFTERF128_H
diff --git a/libc/test/src/math/CMakeLists.txt b/libc/test/src/math/CMakeLists.txt
index ad7dfdb3dfd9ec..33dda185287eb2 100644
--- a/libc/test/src/math/CMakeLists.txt
+++ b/libc/test/src/math/CMakeLists.txt
@@ -1273,6 +1273,21 @@ add_fp_unittest(
libc.src.__support.FPUtil.fp_bits
)
+add_fp_unittest(
+ nextafterf128_test
+ SUITE
+ libc-math-unittests
+ SRCS
+ nextafterf128_test.cpp
+ HDRS
+ NextAfterTest.h
+ DEPENDS
+ libc.include.math
+ libc.src.math.nextafterf128
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.fp_bits
+)
+
# TODO(lntue): The current implementation of fputil::general::fma<float> is only
# correctly rounded for the default rounding mode round-to-nearest tie-to-even.
add_fp_unittest(
diff --git a/libc/test/src/math/nextafterf128_test.cpp b/libc/test/src/math/nextafterf128_test.cpp
new file mode 100644
index 00000000000000..a8d000ff4de387
--- /dev/null
+++ b/libc/test/src/math/nextafterf128_test.cpp
@@ -0,0 +1,13 @@
+//===-- Unittests for nextafterf128 ---------------------------------------===//
+//
+// 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 "NextAfterTest.h"
+
+#include "src/math/nextafterf128.h"
+
+LIST_NEXTAFTER_TESTS(float128, LIBC_NAMESPACE::nextafterf128)
diff --git a/libc/test/src/math/smoke/CMakeLists.txt b/libc/test/src/math/smoke/CMakeLists.txt
index 8d3871dd427aaa..157297361a6b77 100644
--- a/libc/test/src/math/smoke/CMakeLists.txt
+++ b/libc/test/src/math/smoke/CMakeLists.txt
@@ -1551,6 +1551,21 @@ add_fp_unittest(
libc.src.__support.FPUtil.fp_bits
)
+add_fp_unittest(
+ nextafterf128_test
+ SUITE
+ libc-math-smoke-tests
+ SRCS
+ nextafterf128_test.cpp
+ HDRS
+ NextAfterTest.h
+ DEPENDS
+ libc.include.math
+ libc.src.math.nextafterf128
+ libc.src.__support.FPUtil.basic_operations
+ libc.src.__support.FPUtil.fp_bits
+)
+
# FIXME: These tests are currently spurious for the GPU.
if(NOT LIBC_TARGET_OS_IS_GPU)
add_fp_unittest(
diff --git a/libc/test/src/math/smoke/nextafterf128_test.cpp b/libc/test/src/math/smoke/nextafterf128_test.cpp
new file mode 100644
index 00000000000000..a8d000ff4de387
--- /dev/null
+++ b/libc/test/src/math/smoke/nextafterf128_test.cpp
@@ -0,0 +1,13 @@
+//===-- Unittests for nextafterf128 ---------------------------------------===//
+//
+// 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 "NextAfterTest.h"
+
+#include "src/math/nextafterf128.h"
+
+LIST_NEXTAFTER_TESTS(float128, LIBC_NAMESPACE::nextafterf128)
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