| //===-- Unittests for exp2m1f ---------------------------------------------===// |
| // |
| // 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/errno/libc_errno.h" |
| #include "src/math/exp2m1f.h" |
| #include "test/UnitTest/FPMatcher.h" |
| #include "test/UnitTest/Test.h" |
| |
| using LlvmLibcExp2m1fTest = LIBC_NAMESPACE::testing::FPTest<float>; |
| using LIBC_NAMESPACE::fputil::testing::ForceRoundingMode; |
| using LIBC_NAMESPACE::fputil::testing::RoundingMode; |
| |
| TEST_F(LlvmLibcExp2m1fTest, SpecialNumbers) { |
| LIBC_NAMESPACE::libc_errno = 0; |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::exp2m1f(aNaN)); |
| EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::exp2m1f(inf)); |
| EXPECT_FP_EQ_ALL_ROUNDING(-1.0f, LIBC_NAMESPACE::exp2m1f(neg_inf)); |
| EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::exp2m1f(0.0f)); |
| EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, LIBC_NAMESPACE::exp2m1f(-0.0f)); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::exp2m1f(1.0f)); |
| EXPECT_FP_EQ_ALL_ROUNDING(-0.5f, LIBC_NAMESPACE::exp2m1f(-1.0f)); |
| EXPECT_FP_EQ_ALL_ROUNDING(3.0f, LIBC_NAMESPACE::exp2m1f(2.0f)); |
| EXPECT_FP_EQ_ALL_ROUNDING(-0.75f, LIBC_NAMESPACE::exp2m1f(-2.0f)); |
| } |
| |
| TEST_F(LlvmLibcExp2m1fTest, Overflow) { |
| LIBC_NAMESPACE::libc_errno = 0; |
| |
| EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(0x1.fffffep+127), |
| FE_OVERFLOW); |
| EXPECT_MATH_ERRNO(ERANGE); |
| |
| EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(128.0f), |
| FE_OVERFLOW); |
| EXPECT_MATH_ERRNO(ERANGE); |
| |
| EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(0x1.000002p+7), |
| FE_OVERFLOW); |
| EXPECT_MATH_ERRNO(ERANGE); |
| } |
| |
| TEST_F(LlvmLibcExp2m1fTest, Underflow) { |
| LIBC_NAMESPACE::libc_errno = 0; |
| |
| EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-0x1.fffffep+127), |
| FE_UNDERFLOW); |
| EXPECT_MATH_ERRNO(ERANGE); |
| |
| EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-25.0f), |
| FE_UNDERFLOW); |
| EXPECT_MATH_ERRNO(ERANGE); |
| |
| EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-0x1.900002p4), |
| FE_UNDERFLOW); |
| EXPECT_MATH_ERRNO(ERANGE); |
| } |