| //===-- Unittests for fabsl -----------------------------------------------===// |
| // |
| // 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/fabsl.h" |
| #include "utils/FPUtil/FPBits.h" |
| #include "utils/FPUtil/TestHelpers.h" |
| #include "utils/MPFRWrapper/MPFRUtils.h" |
| #include "utils/UnitTest/Test.h" |
| #include <math.h> |
| |
| using FPBits = __llvm_libc::fputil::FPBits<long double>; |
| |
| DECLARE_SPECIAL_CONSTANTS(long double) |
| |
| namespace mpfr = __llvm_libc::testing::mpfr; |
| |
| TEST(LlvmLibcFabslTest, SpecialNumbers) { |
| EXPECT_FP_EQ(aNaN, __llvm_libc::fabsl(aNaN)); |
| |
| EXPECT_FP_EQ(inf, __llvm_libc::fabsl(inf)); |
| EXPECT_FP_EQ(inf, __llvm_libc::fabsl(negInf)); |
| |
| EXPECT_FP_EQ(zero, __llvm_libc::fabsl(zero)); |
| EXPECT_FP_EQ(zero, __llvm_libc::fabsl(negZero)); |
| } |
| |
| TEST(LlvmLibcFabslTest, InLongDoubleRange) { |
| using UIntType = FPBits::UIntType; |
| constexpr UIntType count = 10000000; |
| constexpr UIntType step = UIntType(-1) / count; |
| for (UIntType i = 0, v = 0; i <= count; ++i, v += step) { |
| long double x = FPBits(v); |
| if (isnan(x) || isinf(x)) |
| continue; |
| ASSERT_MPFR_MATCH(mpfr::Operation::Abs, x, __llvm_libc::fabsl(x), 0.0); |
| } |
| } |