| 1 | //===-- Exhaustive test for sincosf ---------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "exhaustive_test.h" |
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| 10 | #include "src/math/sincosf.h" |
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| 11 | #include "utils/MPFRWrapper/MPFRUtils.h" |
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| 12 | |
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| 13 | namespace mpfr = LIBC_NAMESPACE::testing::mpfr; |
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| 14 | |
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| 15 | struct SincosfChecker : public virtual LIBC_NAMESPACE::testing::Test { |
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| 16 | using FloatType = float; |
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| 17 | using FPBits = LIBC_NAMESPACE::fputil::FPBits<float>; |
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| 18 | using StorageType = uint32_t; |
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| 19 | |
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| 20 | uint64_t check(StorageType start, StorageType stop, |
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| 21 | mpfr::RoundingMode rounding) { |
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| 22 | mpfr::ForceRoundingMode r(rounding); |
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| 23 | if (!r.success) |
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| 24 | return (stop > start); |
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| 25 | StorageType bits = start; |
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| 26 | uint64_t failed = 0; |
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| 27 | do { |
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| 28 | FPBits xbits(bits); |
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| 29 | FloatType x = xbits.get_val(); |
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| 30 | FloatType sinx, cosx; |
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| 31 | LIBC_NAMESPACE::sincosf(x, &sinx, &cosx); |
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| 32 | |
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| 33 | bool correct = TEST_MPFR_MATCH_ROUNDING_SILENTLY(mpfr::Operation::Sin, x, |
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| 34 | sinx, 0.5, rounding); |
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| 35 | correct = correct && TEST_MPFR_MATCH_ROUNDING_SILENTLY( |
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| 36 | mpfr::Operation::Cos, x, cosx, 0.5, rounding); |
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| 37 | failed += (!correct); |
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| 38 | // Uncomment to print out failed values. |
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| 39 | // if (!correct) { |
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| 40 | // TEST_MPFR_MATCH(mpfr::Operation::Sin, x, sinx, 0.5, rounding); |
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| 41 | // TEST_MPFR_MATCH(mpfr::Operation::Cos, x, cosx, 0.5, rounding); |
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| 42 | // } |
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| 43 | } while (bits++ < stop); |
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| 44 | return failed; |
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| 45 | } |
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| 46 | }; |
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| 47 | |
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| 48 | using LlvmLibcSincosfExhaustiveTest = |
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| 49 | LlvmLibcExhaustiveMathTest<SincosfChecker>; |
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| 50 | |
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| 51 | // Range: [0, Inf]; |
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| 52 | static constexpr uint32_t POS_START = 0x0000'0000U; |
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| 53 | static constexpr uint32_t POS_STOP = 0x7f80'0000U; |
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| 54 | |
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| 55 | TEST_F(LlvmLibcSincosfExhaustiveTest, PostiveRange) { |
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| 56 | test_full_range_all_roundings(POS_START, POS_STOP); |
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| 57 | } |
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| 58 | |
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| 59 | // Range: [-1, 0]; |
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| 60 | static constexpr uint32_t NEG_START = 0xb000'0000U; |
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| 61 | static constexpr uint32_t NEG_STOP = 0xbf7f'ffffU; |
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| 62 | |
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| 63 | TEST_F(LlvmLibcSincosfExhaustiveTest, NegativeRange) { |
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| 64 | test_full_range_all_roundings(NEG_START, NEG_STOP); |
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| 65 | } |
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| 66 | |
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