1//===-- Unittests for atanf -----------------------------------------------===//
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/atanf.h"
13#include "test/UnitTest/FPMatcher.h"
14#include "test/UnitTest/Test.h"
15
16#include <stdint.h>
17
18using LlvmLibcAtanfTest = LIBC_NAMESPACE::testing::FPTest<float>;
19
20TEST_F(LlvmLibcAtanfTest, SpecialNumbers) {
21 libc_errno = 0;
22 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::atanf(sNaN), FE_INVALID);
23 EXPECT_MATH_ERRNO(0);
24
25 // TODO: Strengthen errno,exception checks and remove these assert macros
26 // after new matchers/test fixtures are added
27 // https://github.com/llvm/llvm-project/issues/90653
28 LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
29 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::atanf(aNaN));
30 // TODO: Uncomment these checks later, RoundingMode affects running
31 // tests in this way https://github.com/llvm/llvm-project/issues/90653.
32 // EXPECT_FP_EXCEPTION(0);
33 EXPECT_MATH_ERRNO(0);
34
35 LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
36 EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::atanf(0.0f));
37 // See above TODO
38 // EXPECT_FP_EXCEPTION(0);
39 EXPECT_MATH_ERRNO(0);
40
41 LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
42 EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, LIBC_NAMESPACE::atanf(-0.0f));
43 // See above TODO
44 // EXPECT_FP_EXCEPTION(0);
45 EXPECT_MATH_ERRNO(0);
46}
47
48#ifdef LIBC_TEST_FTZ_DAZ
49
50using namespace LIBC_NAMESPACE::testing;
51
52TEST_F(LlvmLibcAtanfTest, FTZMode) {
53 ModifyMXCSR mxcsr(FTZ);
54
55 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atanf(min_denormal));
56}
57
58TEST_F(LlvmLibcAtanfTest, DAZMode) {
59 ModifyMXCSR mxcsr(DAZ);
60
61 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atanf(min_denormal));
62}
63
64TEST_F(LlvmLibcAtanfTest, FTZDAZMode) {
65 ModifyMXCSR mxcsr(FTZ | DAZ);
66
67 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atanf(min_denormal));
68}
69
70#endif
71

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