xref: /aosp_15_r20/external/llvm-libc/test/src/math/smoke/acosf_test.cpp (revision 71db0c75aadcf003ffe3238005f61d7618a3fead)
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