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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#ifndef LLVM_LIBC_TEST_SRC_MATH_SMOKE_COPYSIGNTEST_H10#define LLVM_LIBC_TEST_SRC_MATH_SMOKE_COPYSIGNTEST_H11 12#include "src/__support/CPP/algorithm.h"13#include "test/UnitTest/FEnvSafeTest.h"14#include "test/UnitTest/FPMatcher.h"15#include "test/UnitTest/Test.h"16 17#include "hdr/math_macros.h"18 19template <typename T>20class CopySignTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {21 22 DECLARE_SPECIAL_CONSTANTS(T)23 24public:25 typedef T (*CopySignFunc)(T, T);26 27 void testSpecialNumbers(CopySignFunc func) {28 EXPECT_FP_EQ(aNaN, func(aNaN, T(-1.0)));29 EXPECT_FP_EQ(aNaN, func(aNaN, T(1.0)));30 31 EXPECT_FP_EQ(neg_inf, func(inf, T(-1.0)));32 EXPECT_FP_EQ(inf, func(neg_inf, T(1.0)));33 34 EXPECT_FP_EQ(neg_zero, func(zero, T(-1.0)));35 EXPECT_FP_EQ(zero, func(neg_zero, T(1.0)));36 }37 38 void testRange(CopySignFunc func) {39 constexpr int COUNT = 100'000;40 constexpr StorageType STEP = LIBC_NAMESPACE::cpp::max(41 static_cast<StorageType>(STORAGE_MAX / COUNT), StorageType(1));42 StorageType v = 0;43 for (int i = 0; i <= COUNT; ++i, v += STEP) {44 FPBits x_bits = FPBits(v);45 if (x_bits.is_nan() || x_bits.is_inf())46 continue;47 T x = x_bits.get_val();48 49 T res1 = func(x, -x);50 ASSERT_FP_EQ(res1, -x);51 52 T res2 = func(x, x);53 ASSERT_FP_EQ(res2, x);54 }55 }56};57 58#define LIST_COPYSIGN_TESTS(T, func) \59 using LlvmLibcCopySignTest = CopySignTest<T>; \60 TEST_F(LlvmLibcCopySignTest, SpecialNumbers) { testSpecialNumbers(&func); } \61 TEST_F(LlvmLibcCopySignTest, Range) { testRange(&func); }62 63#endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_COPYSIGNTEST_H64