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1//===-- Utility class to test copysign[f|l] ---------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "test/UnitTest/FEnvSafeTest.h"10#include "test/UnitTest/FPMatcher.h"11#include "test/UnitTest/Test.h"12#include "utils/MPFRWrapper/MPFRUtils.h"13 14#include "hdr/math_macros.h"15 16namespace mpfr = LIBC_NAMESPACE::testing::mpfr;17 18template <typename T>19class CopySignTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {20 21 DECLARE_SPECIAL_CONSTANTS(T)22 23public:24 typedef T (*CopySignFunc)(T, T);25 26 void testSpecialNumbers(CopySignFunc func) {27 EXPECT_FP_EQ(aNaN, func(aNaN, -1.0));28 EXPECT_FP_EQ(aNaN, func(aNaN, 1.0));29 30 EXPECT_FP_EQ(neg_inf, func(inf, -1.0));31 EXPECT_FP_EQ(inf, func(neg_inf, 1.0));32 33 EXPECT_FP_EQ(neg_zero, func(zero, -1.0));34 EXPECT_FP_EQ(zero, func(neg_zero, 1.0));35 }36 37 void testRange(CopySignFunc func) {38 constexpr StorageType COUNT = 100'000;39 constexpr StorageType STEP = STORAGE_MAX / COUNT;40 for (StorageType i = 0, v = 0; i <= COUNT; ++i, v += STEP) {41 T x = FPBits(v).get_val();42 if (FPBits(v).is_nan() || FPBits(v).is_inf())43 continue;44 45 T res1 = func(x, -x);46 ASSERT_FP_EQ(res1, -x);47 48 T res2 = func(x, x);49 ASSERT_FP_EQ(res2, x);50 }51 }52};53 54#define LIST_COPYSIGN_TESTS(T, func) \55 using LlvmLibcCopySignTest = CopySignTest<T>; \56 TEST_F(LlvmLibcCopySignTest, SpecialNumbers) { testSpecialNumbers(&func); } \57 TEST_F(LlvmLibcCopySignTest, Range) { testRange(&func); }58