1df0dbfcb5
Summary: Having a consistent prefix makes selecting all of the llvm libc tests easier on any platform that is also using the gtest framework. This also modifies the TEST and TEST_F macros to enforce this change moving forward. Reviewers: sivachandra Subscribers:
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
//===-- Unittests for copysignf -------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/math/copysignf.h"
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#include "utils/FPUtil/FPBits.h"
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#include "utils/FPUtil/TestHelpers.h"
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#include "utils/UnitTest/Test.h"
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#include <math.h>
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using FPBits = __llvm_libc::fputil::FPBits<float>;
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DECLARE_SPECIAL_CONSTANTS(float)
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TEST(LlvmLibcCopySinfTest, SpecialNumbers) {
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EXPECT_FP_EQ(aNaN, __llvm_libc::copysignf(aNaN, -1.0));
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EXPECT_FP_EQ(aNaN, __llvm_libc::copysignf(aNaN, 1.0));
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EXPECT_FP_EQ(negInf, __llvm_libc::copysignf(inf, -1.0));
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EXPECT_FP_EQ(inf, __llvm_libc::copysignf(negInf, 1.0));
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EXPECT_FP_EQ(negZero, __llvm_libc::copysignf(zero, -1.0));
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EXPECT_FP_EQ(zero, __llvm_libc::copysignf(negZero, 1.0));
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}
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TEST(LlvmLibcCopySinfTest, InFloatRange) {
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using UIntType = FPBits::UIntType;
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constexpr UIntType count = 1000000;
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constexpr UIntType step = UIntType(-1) / count;
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for (UIntType i = 0, v = 0; i <= count; ++i, v += step) {
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float x = FPBits(v);
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if (isnan(x) || isinf(x) || x == 0)
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continue;
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float res1 = __llvm_libc::copysignf(x, -x);
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ASSERT_FP_EQ(res1, -x);
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float res2 = __llvm_libc::copysignf(x, x);
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ASSERT_FP_EQ(res2, x);
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}
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}
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