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