1//===-- Unittests for sincos ----------------------------------------------===//
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/__support/FPUtil/FPBits.h"
10#include "src/math/sincos.h"
11#include "test/UnitTest/FPMatcher.h"
12#include "test/UnitTest/Test.h"
13#include "utils/MPFRWrapper/MPFRUtils.h"
14
15using LlvmLibcSincosTest = LIBC_NAMESPACE::testing::FPTest<double>;
16
17namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
18
19using LIBC_NAMESPACE::testing::tlog;
20
21#define ASSERT_SINCOS_MATCH_ALL_ROUNDING(input) \
22 do { \
23 double sin_x, cos_x; \
24 namespace mpfr = LIBC_NAMESPACE::testing::mpfr; \
25 \
26 mpfr::ForceRoundingMode __r1(mpfr::RoundingMode::Nearest); \
27 if (__r1.success) { \
28 LIBC_NAMESPACE::sincos(input, &sin_x, &cos_x); \
29 ASSERT_MPFR_MATCH(mpfr::Operation::Sin, input, sin_x, 0.5, \
30 mpfr::RoundingMode::Nearest); \
31 ASSERT_MPFR_MATCH(mpfr::Operation::Cos, input, cos_x, 0.5, \
32 mpfr::RoundingMode::Nearest); \
33 } \
34 \
35 mpfr::ForceRoundingMode __r2(mpfr::RoundingMode::Upward); \
36 if (__r2.success) { \
37 LIBC_NAMESPACE::sincos(input, &sin_x, &cos_x); \
38 ASSERT_MPFR_MATCH(mpfr::Operation::Sin, input, sin_x, 0.5, \
39 mpfr::RoundingMode::Upward); \
40 ASSERT_MPFR_MATCH(mpfr::Operation::Cos, input, cos_x, 0.5, \
41 mpfr::RoundingMode::Upward); \
42 } \
43 \
44 mpfr::ForceRoundingMode __r3(mpfr::RoundingMode::Downward); \
45 if (__r3.success) { \
46 LIBC_NAMESPACE::sincos(input, &sin_x, &cos_x); \
47 ASSERT_MPFR_MATCH(mpfr::Operation::Sin, input, sin_x, 0.5, \
48 mpfr::RoundingMode::Downward); \
49 ASSERT_MPFR_MATCH(mpfr::Operation::Cos, input, cos_x, 0.5, \
50 mpfr::RoundingMode::Downward); \
51 } \
52 \
53 mpfr::ForceRoundingMode __r4(mpfr::RoundingMode::TowardZero); \
54 if (__r4.success) { \
55 LIBC_NAMESPACE::sincos(input, &sin_x, &cos_x); \
56 ASSERT_MPFR_MATCH(mpfr::Operation::Sin, input, sin_x, 0.5, \
57 mpfr::RoundingMode::TowardZero); \
58 ASSERT_MPFR_MATCH(mpfr::Operation::Cos, input, cos_x, 0.5, \
59 mpfr::RoundingMode::TowardZero); \
60 } \
61 } while (0)
62
63TEST_F(LlvmLibcSincosTest, TrickyInputs) {
64 constexpr double INPUTS[] = {
65 0x1.8000000000009p-23, 0x1.8000000000024p-22,
66 0x1.800000000009p-21, 0x1.20000000000f3p-20,
67 0x1.800000000024p-20, 0x1.e0000000001c2p-20,
68 0x1.940c877fb7dacp-7, -0x1.f42fb19b5b9b2p-6,
69 -0x1.0285070f9f1bcp-5, 0x1.23f40dccdef72p+0,
70 0x1.43cf16358c9d7p+0, 0x1.addf3b9722265p+0,
71 0x1.ae78d360afa15p+0, 0x1.e31b55306f22cp+2,
72 0x1.e639103a05997p+2, -0x1.f7898d5a756ddp+2,
73 0x1.1685973506319p+3, 0x1.5f09cad750ab1p+3,
74 -0x1.aaf85537ea4c7p+3, 0x1.4f2b874135d27p+4,
75 0x1.13114266f9764p+4, 0x1.a211877de55dbp+4,
76 -0x1.a5eece87e8606p+4, 0x1.a65d441ea6dcep+4,
77 0x1.1ffb509f3db15p+5, 0x1.2345d1e090529p+5,
78 0x1.c96e28eb679f8p+5, 0x1.be886d9c2324dp+6,
79 -0x1.ab514bfc61c76p+7, -0x1.14823229799c2p+7,
80 0x1.48ff1782ca91dp+8, 0x1.dcbfda0c7559ep+8,
81 0x1.dcbfda0c7559ep+8, 0x1.2e566149bf5fdp+9,
82 0x1.cb996c60f437ep+9, 0x1.ae945054939c2p+10,
83 -0x1.119471e9216cdp+10, 0x1.ae945054939c2p+10,
84 0x1.fffffffffdb6p+24, 0x1.fd4da4ef37075p+29,
85 0x1.55202aefde314p+31, 0x1.b951f1572eba5p+31,
86 0x1.7776c2343ba4ep+101, 0x1.85fc0f04c0128p+101,
87 0x1.678309fa50d58p+110, 0x1.fffffffffef4ep+199,
88 0x1.3eec5912ea7cdp+331, -0x1.3eec5912ea7cdp+331,
89 -0x1.6deb37da81129p+205, 0x1.08087e9aad90bp+887,
90 -0x1.08087e9aad90bp+887, -0x1.8bb5847d49973p+845,
91 0x1.6ac5b262ca1ffp+849, 0x1.f08b14e1c4d0fp+890,
92 0x1.2b5fe88a9d8d5p+903, 0x1.f6d7518808571p+1023,
93 -0x1.a880417b7b119p+1023, 0x1.00a33764a0a83p-7,
94 0x1.fe81868fc47fep+1, 0x1.0da8cc189b47dp-10,
95 0x1.da1838053b866p+5,
96
97 };
98 constexpr int N = sizeof(INPUTS) / sizeof(INPUTS[0]);
99
100 for (int i = 0; i < N; ++i) {
101 ASSERT_SINCOS_MATCH_ALL_ROUNDING(INPUTS[i]);
102 }
103}
104
105TEST_F(LlvmLibcSincosTest, InDoubleRange) {
106 constexpr uint64_t COUNT = 123'41;
107 uint64_t START = LIBC_NAMESPACE::fputil::FPBits<double>(0x1.0p-50).uintval();
108 uint64_t STOP = LIBC_NAMESPACE::fputil::FPBits<double>(0x1.0p200).uintval();
109 uint64_t STEP = (STOP - START) / COUNT;
110
111 for (uint64_t i = 0, v = START; i <= COUNT; ++i, v += STEP) {
112 double x = FPBits(v).get_val();
113 if (FPBits(v).is_nan() || FPBits(v).is_inf())
114 continue;
115
116 ASSERT_SINCOS_MATCH_ALL_ROUNDING(x);
117 }
118}
119

source code of libc/test/src/math/sincos_test.cpp