| 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 | |
| 20 | TEST_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: x) || isinf(x: 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 |