| //===-- Unittests for fmaxf -----------------------------------------------===// |
| // |
| // 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 "include/math.h" |
| #include "src/math/fmaxf.h" |
| #include "utils/FPUtil/FPBits.h" |
| #include "utils/FPUtil/TestHelpers.h" |
| #include "utils/UnitTest/Test.h" |
| |
| using FPBits = __llvm_libc::fputil::FPBits<float>; |
| |
| DECLARE_SPECIAL_CONSTANTS(float) |
| |
| TEST(FmaxfTest, NaNArg) { |
| EXPECT_FP_EQ(inf, __llvm_libc::fmaxf(nan, inf)); |
| EXPECT_FP_EQ(negInf, __llvm_libc::fmaxf(negInf, nan)); |
| EXPECT_FP_EQ(0.0f, __llvm_libc::fmaxf(nan, 0.0f)); |
| EXPECT_FP_EQ(-0.0f, __llvm_libc::fmaxf(-0.0f, nan)); |
| EXPECT_FP_EQ(-1.2345f, __llvm_libc::fmaxf(nan, -1.2345f)); |
| EXPECT_FP_EQ(1.2345f, __llvm_libc::fmaxf(1.2345f, nan)); |
| EXPECT_NE(isnan(__llvm_libc::fmaxf(nan, nan)), 0); |
| } |
| |
| TEST(FmaxfTest, InfArg) { |
| EXPECT_FP_EQ(inf, __llvm_libc::fmaxf(negInf, inf)); |
| EXPECT_FP_EQ(inf, __llvm_libc::fmaxf(inf, 0.0f)); |
| EXPECT_FP_EQ(inf, __llvm_libc::fmaxf(-0.0f, inf)); |
| EXPECT_FP_EQ(inf, __llvm_libc::fmaxf(inf, 1.2345f)); |
| EXPECT_FP_EQ(inf, __llvm_libc::fmaxf(-1.2345f, inf)); |
| } |
| |
| TEST(FmaxfTest, NegInfArg) { |
| EXPECT_FP_EQ(inf, __llvm_libc::fmaxf(inf, negInf)); |
| EXPECT_FP_EQ(0.0f, __llvm_libc::fmaxf(negInf, 0.0f)); |
| EXPECT_FP_EQ(-0.0f, __llvm_libc::fmaxf(-0.0f, negInf)); |
| EXPECT_FP_EQ(-1.2345f, __llvm_libc::fmaxf(negInf, -1.2345f)); |
| EXPECT_FP_EQ(1.2345f, __llvm_libc::fmaxf(1.2345f, negInf)); |
| } |
| |
| TEST(FmaxfTest, BothZero) { |
| EXPECT_FP_EQ(0.0f, __llvm_libc::fmaxf(0.0f, 0.0f)); |
| EXPECT_FP_EQ(0.0f, __llvm_libc::fmaxf(-0.0f, 0.0f)); |
| EXPECT_FP_EQ(0.0f, __llvm_libc::fmaxf(0.0f, -0.0f)); |
| EXPECT_FP_EQ(-0.0f, __llvm_libc::fmaxf(-0.0f, -0.0f)); |
| } |
| |
| TEST(FmaxfTest, InFloatRange) { |
| using UIntType = FPBits::UIntType; |
| constexpr UIntType count = 10000001; |
| constexpr UIntType step = UIntType(-1) / count; |
| for (UIntType i = 0, v = 0, w = UIntType(-1); i <= count; |
| ++i, v += step, w -= step) { |
| float 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::fmaxf(x, y)); |
| } else { |
| ASSERT_FP_EQ(y, __llvm_libc::fmaxf(x, y)); |
| } |
| } |
| } |