1//===-- Unittests for tan -------------------------------------------------===//
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/tan.h"
10#include "test/UnitTest/FPMatcher.h"
11#include "test/UnitTest/Test.h"
12
13using LlvmLibcTanTest = LIBC_NAMESPACE::testing::FPTest<double>;
14
15using LIBC_NAMESPACE::testing::tlog;
16
17TEST_F(LlvmLibcTanTest, SpecialNumbers) {
18 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::tan(sNaN), FE_INVALID);
19 EXPECT_MATH_ERRNO(0);
20
21 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::tan(aNaN));
22 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::tan(inf));
23 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::tan(neg_inf));
24 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::tan(zero));
25 EXPECT_FP_EQ_ALL_ROUNDING(neg_zero, LIBC_NAMESPACE::tan(neg_zero));
26 EXPECT_FP_EQ(0x1.0p-50, LIBC_NAMESPACE::tan(0x1.0p-50));
27 EXPECT_FP_EQ(min_normal, LIBC_NAMESPACE::tan(min_normal));
28 EXPECT_FP_EQ(min_denormal, LIBC_NAMESPACE::tan(min_denormal));
29}
30
31#ifdef LIBC_TEST_FTZ_DAZ
32
33using namespace LIBC_NAMESPACE::testing;
34
35TEST_F(LlvmLibcTanTest, FTZMode) {
36 ModifyMXCSR mxcsr(FTZ);
37
38 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::tan(min_denormal));
39 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::tan(max_denormal));
40}
41
42TEST_F(LlvmLibcTanTest, DAZMode) {
43 ModifyMXCSR mxcsr(DAZ);
44
45 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::tan(min_denormal));
46 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::tan(max_denormal));
47}
48
49TEST_F(LlvmLibcTanTest, FTZDAZMode) {
50 ModifyMXCSR mxcsr(FTZ | DAZ);
51
52 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::tan(min_denormal));
53 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::tan(max_denormal));
54}
55
56#endif
57

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