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 #include "utils/MPFRWrapper/MPFRUtils.h" 13 14 #include "hdr/math_macros.h" 15 16 using LlvmLibcTanTest = LIBC_NAMESPACE::testing::FPTest<double>; 17 18 namespace mpfr = LIBC_NAMESPACE::testing::mpfr; 19 TEST_F(LlvmLibcTanTest,Range)20TEST_F(LlvmLibcTanTest, Range) { 21 static constexpr double _2pi = 6.283185307179586; 22 constexpr StorageType COUNT = 100'000; 23 constexpr StorageType STEP = STORAGE_MAX / COUNT; 24 for (StorageType i = 0, v = 0; i <= COUNT; ++i, v += STEP) { 25 double x = FPBits(v).get_val(); 26 // TODO: Expand the range of testing after range reduction is implemented. 27 if (isnan(x) || isinf(x) || x > _2pi || x < -_2pi) 28 continue; 29 30 ASSERT_MPFR_MATCH(mpfr::Operation::Tan, x, LIBC_NAMESPACE::tan(x), 1.0); 31 } 32 } 33