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 15 using LlvmLibcSincosTest = LIBC_NAMESPACE::testing::FPTest<double>; 16 17 namespace mpfr = LIBC_NAMESPACE::testing::mpfr; 18 19 using 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 63 TEST_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 } 104 105 TEST_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