1 //===-- Unittests for acosf -----------------------------------------------===//
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/acosf.h"
13 #include "test/UnitTest/FPMatcher.h"
14 #include "test/UnitTest/Test.h"
15
16 #include <stdint.h>
17
18 using LlvmLibcAcosfTest = LIBC_NAMESPACE::testing::FPTest<float>;
19
TEST_F(LlvmLibcAcosfTest,SpecialNumbers)20 TEST_F(LlvmLibcAcosfTest, SpecialNumbers) {
21 LIBC_NAMESPACE::libc_errno = 0;
22
23 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(aNaN));
24 EXPECT_MATH_ERRNO(0);
25
26 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(inf));
27 EXPECT_MATH_ERRNO(EDOM);
28
29 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(neg_inf));
30 EXPECT_MATH_ERRNO(EDOM);
31
32 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::acosf(1.0f));
33 EXPECT_MATH_ERRNO(0);
34
35 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(2.0f));
36 EXPECT_MATH_ERRNO(EDOM);
37
38 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::acosf(-2.0f));
39 EXPECT_MATH_ERRNO(EDOM);
40 }
41
42 #ifdef LIBC_TEST_FTZ_DAZ
43
44 using namespace LIBC_NAMESPACE::testing;
45
TEST_F(LlvmLibcAcosfTest,FTZMode)46 TEST_F(LlvmLibcAcosfTest, FTZMode) {
47 ModifyMXCSR mxcsr(FTZ);
48
49 EXPECT_FP_EQ(0x1.921fb6p0f, LIBC_NAMESPACE::acosf(min_denormal));
50 }
51
TEST_F(LlvmLibcAcosfTest,DAZMode)52 TEST_F(LlvmLibcAcosfTest, DAZMode) {
53 ModifyMXCSR mxcsr(DAZ);
54
55 EXPECT_FP_EQ(0x1.921fb6p0f, LIBC_NAMESPACE::acosf(min_denormal));
56 }
57
TEST_F(LlvmLibcAcosfTest,FTZDAZMode)58 TEST_F(LlvmLibcAcosfTest, FTZDAZMode) {
59 ModifyMXCSR mxcsr(FTZ | DAZ);
60
61 EXPECT_FP_EQ(0x1.921fb6p0f, LIBC_NAMESPACE::acosf(min_denormal));
62 }
63
64 #endif
65