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/errno/libc_errno.h"
12 #include "src/math/log1p.h"
13 #include "test/UnitTest/FPMatcher.h"
14 #include "test/UnitTest/Test.h"
15
16 #include <errno.h>
17 #include <stdint.h>
18
19 using LlvmLibcLog1pTest = LIBC_NAMESPACE::testing::FPTest<double>;
20
TEST_F(LlvmLibcLog1pTest,SpecialNumbers)21 TEST_F(LlvmLibcLog1pTest, SpecialNumbers) {
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