1 //===-- Unittests for cos -------------------------------------------------===//
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 "src/math/cos.h"
10 #include "test/UnitTest/FPMatcher.h"
11 #include "test/UnitTest/Test.h"
12
13 using LlvmLibcCosTest = LIBC_NAMESPACE::testing::FPTest<double>;
14
15 using LIBC_NAMESPACE::testing::tlog;
16
TEST_F(LlvmLibcCosTest,SpecialNumbers)17 TEST_F(LlvmLibcCosTest, SpecialNumbers) {
18 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::cos(aNaN));
19 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::cos(inf));
20 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::cos(neg_inf));
21 EXPECT_FP_EQ_ALL_ROUNDING(1.0, LIBC_NAMESPACE::cos(zero));
22 EXPECT_FP_EQ_ALL_ROUNDING(1.0, LIBC_NAMESPACE::cos(neg_zero));
23 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::cos(0x1.0p-50));
24 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::cos(min_normal));
25 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::cos(min_denormal));
26 }
27
28 #ifdef LIBC_TEST_FTZ_DAZ
29
30 using namespace LIBC_NAMESPACE::testing;
31
TEST_F(LlvmLibcCosTest,FTZMode)32 TEST_F(LlvmLibcCosTest, FTZMode) {
33 ModifyMXCSR mxcsr(FTZ);
34
35 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::cos(min_denormal));
36 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::cos(max_denormal));
37 }
38
TEST_F(LlvmLibcCosTest,DAZMode)39 TEST_F(LlvmLibcCosTest, DAZMode) {
40 ModifyMXCSR mxcsr(DAZ);
41
42 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::cos(min_denormal));
43 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::cos(max_denormal));
44 }
45
TEST_F(LlvmLibcCosTest,FTZDAZMode)46 TEST_F(LlvmLibcCosTest, FTZDAZMode) {
47 ModifyMXCSR mxcsr(FTZ | DAZ);
48
49 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::cos(min_denormal));
50 EXPECT_FP_EQ(1.0, LIBC_NAMESPACE::cos(max_denormal));
51 }
52
53 #endif
54