| //===-- Unittests for fmin -----------------------------------------------===// |
| // |
| // 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/fminl.h" |
| #include "utils/FPUtil/FPBits.h" |
| #include "utils/FPUtil/TestHelpers.h" |
| #include "utils/UnitTest/Test.h" |
| #include <math.h> |
| |
| using FPBits = __llvm_libc::fputil::FPBits<long double>; |
| |
| DECLARE_SPECIAL_CONSTANTS(long double) |
| |
| TEST(LlvmLibcFminlTest, NaNArg) { |
| EXPECT_FP_EQ(inf, __llvm_libc::fminl(aNaN, inf)); |
| EXPECT_FP_EQ(negInf, __llvm_libc::fminl(negInf, aNaN)); |
| EXPECT_FP_EQ(0.0L, __llvm_libc::fminl(aNaN, 0.0L)); |
| EXPECT_FP_EQ(-0.0L, __llvm_libc::fminl(-0.0L, aNaN)); |
| EXPECT_FP_EQ(-1.2345L, __llvm_libc::fminl(aNaN, -1.2345L)); |
| EXPECT_FP_EQ(1.2345L, __llvm_libc::fminl(1.2345L, aNaN)); |
| EXPECT_FP_EQ(aNaN, __llvm_libc::fminl(aNaN, aNaN)); |
| } |
| |
| TEST(LlvmLibcFminlTest, InfArg) { |
| EXPECT_FP_EQ(negInf, __llvm_libc::fminl(negInf, inf)); |
| EXPECT_FP_EQ(0.0L, __llvm_libc::fminl(inf, 0.0L)); |
| EXPECT_FP_EQ(-0.0L, __llvm_libc::fminl(-0.0L, inf)); |
| EXPECT_FP_EQ(1.2345L, __llvm_libc::fminl(inf, 1.2345L)); |
| EXPECT_FP_EQ(-1.2345L, __llvm_libc::fminl(-1.2345L, inf)); |
| } |
| |
| TEST(LlvmLibcFminlTest, NegInfArg) { |
| EXPECT_FP_EQ(negInf, __llvm_libc::fminl(inf, negInf)); |
| EXPECT_FP_EQ(negInf, __llvm_libc::fminl(negInf, 0.0L)); |
| EXPECT_FP_EQ(negInf, __llvm_libc::fminl(-0.0L, negInf)); |
| EXPECT_FP_EQ(negInf, __llvm_libc::fminl(negInf, -1.2345L)); |
| EXPECT_FP_EQ(negInf, __llvm_libc::fminl(1.2345L, negInf)); |
| } |
| |
| TEST(LlvmLibcFminlTest, BothZero) { |
| EXPECT_FP_EQ(0.0L, __llvm_libc::fminl(0.0L, 0.0L)); |
| EXPECT_FP_EQ(-0.0L, __llvm_libc::fminl(-0.0L, 0.0L)); |
| EXPECT_FP_EQ(-0.0L, __llvm_libc::fminl(0.0L, -0.0L)); |
| EXPECT_FP_EQ(-0.0L, __llvm_libc::fminl(-0.0L, -0.0L)); |
| } |
| |
| TEST(LlvmLibcFminlTest, InLongDoubleRange) { |
| using UIntType = FPBits::UIntType; |
| constexpr UIntType count = 10000000; |
| constexpr UIntType step = UIntType(-1) / count; |
| for (UIntType i = 0, v = 0, w = UIntType(-1); i <= count; |
| ++i, v += step, w -= step) { |
| long double x = FPBits(v), y = FPBits(w); |
| if (isnan(x) || isinf(x)) |
| continue; |
| if (isnan(y) || isinf(y)) |
| continue; |
| if ((x == 0) && (y == 0)) |
| continue; |
| |
| if (x < y) { |
| ASSERT_FP_EQ(x, __llvm_libc::fminl(x, y)); |
| } else { |
| ASSERT_FP_EQ(y, __llvm_libc::fminl(x, y)); |
| } |
| } |
| } |