1//===-- Unittests for log2f16 ---------------------------------------------===//
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/fenv_macros.h"
10#include "src/__support/FPUtil/cast.h"
11#include "src/__support/libc_errno.h"
12#include "src/math/log2f16.h"
13#include "test/UnitTest/FPMatcher.h"
14#include "test/UnitTest/Test.h"
15
16using LlvmLibcLog2f16Test = LIBC_NAMESPACE::testing::FPTest<float16>;
17
18TEST_F(LlvmLibcLog2f16Test, SpecialNumbers) {
19 libc_errno = 0;
20
21 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::log2f16(aNaN));
22 EXPECT_MATH_ERRNO(0);
23
24 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::log2f16(sNaN), FE_INVALID);
25 EXPECT_MATH_ERRNO(0);
26
27 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::log2f16(inf));
28 EXPECT_MATH_ERRNO(0);
29
30 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::log2f16(neg_inf));
31 EXPECT_MATH_ERRNO(EDOM);
32
33 EXPECT_FP_EQ_WITH_EXCEPTION_ALL_ROUNDING(
34 neg_inf, LIBC_NAMESPACE::log2f16(zero), FE_DIVBYZERO);
35 EXPECT_MATH_ERRNO(0);
36
37 EXPECT_FP_EQ_WITH_EXCEPTION_ALL_ROUNDING(
38 neg_inf, LIBC_NAMESPACE::log2f16(neg_zero), FE_DIVBYZERO);
39 EXPECT_MATH_ERRNO(0);
40
41 EXPECT_FP_EQ_ALL_ROUNDING(
42 zero,
43 LIBC_NAMESPACE::log2f16(LIBC_NAMESPACE::fputil::cast<float16>(1.0)));
44 EXPECT_MATH_ERRNO(0);
45
46 EXPECT_FP_EQ_ALL_ROUNDING(
47 aNaN,
48 LIBC_NAMESPACE::log2f16(LIBC_NAMESPACE::fputil::cast<float16>(-1.0)));
49 EXPECT_MATH_ERRNO(EDOM);
50}
51

source code of libc/test/src/math/smoke/log2f16_test.cpp