| 1 | //===-- Unittests for log1p -----------------------------------------------===// |
|---|
| 2 | // |
|---|
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
|---|
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
|---|
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
|---|
| 6 | // |
|---|
| 7 | //===----------------------------------------------------------------------===// |
|---|
| 8 | |
|---|
| 9 | #include "hdr/math_macros.h" |
|---|
| 10 | #include "src/__support/FPUtil/FPBits.h" |
|---|
| 11 | #include "src/__support/libc_errno.h" |
|---|
| 12 | #include "src/math/log1p.h" |
|---|
| 13 | #include "test/UnitTest/FPMatcher.h" |
|---|
| 14 | #include "test/UnitTest/Test.h" |
|---|
| 15 | |
|---|
| 16 | using LlvmLibcLog1pTest = LIBC_NAMESPACE::testing::FPTest<double>; |
|---|
| 17 | |
|---|
| 18 | TEST_F(LlvmLibcLog1pTest, SpecialNumbers) { |
|---|
| 19 | EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::log1p(sNaN), FE_INVALID); |
|---|
| 20 | EXPECT_MATH_ERRNO(0); |
|---|
| 21 | |
|---|
| 22 | EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::log1p(aNaN)); |
|---|
| 23 | EXPECT_FP_EQ(inf, LIBC_NAMESPACE::log1p(inf)); |
|---|
| 24 | EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log1p(neg_inf), FE_INVALID); |
|---|
| 25 | EXPECT_FP_IS_NAN_WITH_EXCEPTION(LIBC_NAMESPACE::log1p(-2.0), FE_INVALID); |
|---|
| 26 | EXPECT_FP_EQ(zero, LIBC_NAMESPACE::log1p(0.0)); |
|---|
| 27 | EXPECT_FP_EQ(neg_zero, LIBC_NAMESPACE::log1p(-0.0)); |
|---|
| 28 | EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, LIBC_NAMESPACE::log1p(-1.0), |
|---|
| 29 | FE_DIVBYZERO); |
|---|
| 30 | |
|---|
| 31 | EXPECT_FP_EQ(0x1.62c829bf8fd9dp9, |
|---|
| 32 | LIBC_NAMESPACE::log1p(0x1.9b536cac3a09dp1023)); |
|---|
| 33 | } |
|---|
| 34 | |
|---|
| 35 | #ifdef LIBC_TEST_FTZ_DAZ |
|---|
| 36 | |
|---|
| 37 | using namespace LIBC_NAMESPACE::testing; |
|---|
| 38 | |
|---|
| 39 | TEST_F(LlvmLibcLog1pTest, FTZMode) { |
|---|
| 40 | ModifyMXCSR mxcsr(FTZ); |
|---|
| 41 | |
|---|
| 42 | EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::log1p(min_denormal)); |
|---|
| 43 | EXPECT_FP_EQ(0x1.62c829bf8fd9dp9, |
|---|
| 44 | LIBC_NAMESPACE::log1p(0x1.9b536cac3a09dp1023)); |
|---|
| 45 | } |
|---|
| 46 | |
|---|
| 47 | TEST_F(LlvmLibcLog1pTest, DAZMode) { |
|---|
| 48 | ModifyMXCSR mxcsr(DAZ); |
|---|
| 49 | |
|---|
| 50 | EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::log1p(min_denormal)); |
|---|
| 51 | EXPECT_FP_EQ(0x1.62c829bf8fd9dp9, |
|---|
| 52 | LIBC_NAMESPACE::log1p(0x1.9b536cac3a09dp1023)); |
|---|
| 53 | } |
|---|
| 54 | |
|---|
| 55 | TEST_F(LlvmLibcLog1pTest, FTZDAZMode) { |
|---|
| 56 | ModifyMXCSR mxcsr(FTZ | DAZ); |
|---|
| 57 | |
|---|
| 58 | EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::log1p(min_denormal)); |
|---|
| 59 | EXPECT_FP_EQ(0x1.62c829bf8fd9dp9, |
|---|
| 60 | LIBC_NAMESPACE::log1p(0x1.9b536cac3a09dp1023)); |
|---|
| 61 | } |
|---|
| 62 | |
|---|
| 63 | #endif |
|---|
| 64 | |
|---|
