| //===-- Utility class to test copysign[f|l] ---------------------*- 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_TEST_SRC_MATH_SMOKE_COPYSIGNTEST_H |
| #define LLVM_LIBC_TEST_SRC_MATH_SMOKE_COPYSIGNTEST_H |
| |
| #include "test/UnitTest/FEnvSafeTest.h" |
| #include "test/UnitTest/FPMatcher.h" |
| #include "test/UnitTest/Test.h" |
| |
| #include "hdr/math_macros.h" |
| |
| template <typename T> |
| class CopySignTest : public LIBC_NAMESPACE::testing::FEnvSafeTest { |
| |
| DECLARE_SPECIAL_CONSTANTS(T) |
| |
| public: |
| typedef T (*CopySignFunc)(T, T); |
| |
| void testSpecialNumbers(CopySignFunc func) { |
| EXPECT_FP_EQ(aNaN, func(aNaN, T(-1.0))); |
| EXPECT_FP_EQ(aNaN, func(aNaN, T(1.0))); |
| |
| EXPECT_FP_EQ(neg_inf, func(inf, T(-1.0))); |
| EXPECT_FP_EQ(inf, func(neg_inf, T(1.0))); |
| |
| EXPECT_FP_EQ(neg_zero, func(zero, T(-1.0))); |
| EXPECT_FP_EQ(zero, func(neg_zero, T(1.0))); |
| } |
| |
| void testRange(CopySignFunc func) { |
| constexpr StorageType COUNT = 100'000; |
| constexpr StorageType STEP = STORAGE_MAX / COUNT; |
| for (StorageType i = 0, v = 0; i <= COUNT; ++i, v += STEP) { |
| FPBits x_bits = FPBits(v); |
| T x = T(v); |
| if (x_bits.is_nan() || x_bits.is_inf()) |
| continue; |
| |
| T res1 = func(x, -x); |
| ASSERT_FP_EQ(res1, -x); |
| |
| T res2 = func(x, x); |
| ASSERT_FP_EQ(res2, x); |
| } |
| } |
| }; |
| |
| #define LIST_COPYSIGN_TESTS(T, func) \ |
| using LlvmLibcCopySignTest = CopySignTest<T>; \ |
| TEST_F(LlvmLibcCopySignTest, SpecialNumbers) { testSpecialNumbers(&func); } \ |
| TEST_F(LlvmLibcCopySignTest, Range) { testRange(&func); } |
| |
| #endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_COPYSIGNTEST_H |