037d34815e
Fuzz tests were set up incorrectly so updated trig functions to match the correct format. --------- Co-authored-by: Sriya Pratipati <sriyap@google.com>
56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
//===-- tan_fuzz.cpp ------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// Fuzzing test for llvm-libc tan implementation.
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///
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//===----------------------------------------------------------------------===//
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#include "src/math/tan.h"
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#include "utils/MPFRWrapper/mpfr_inc.h"
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#include <cstdint>
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#include <cstring>
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#include <iostream>
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#include <math.h>
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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mpfr_t input;
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mpfr_init2(input, 53);
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for (size_t i = 0; i < size / sizeof(double); ++i) {
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double x;
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std::memcpy(&x, data, sizeof(double));
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data += sizeof(double);
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// remove NaN and inf as preconditions
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if (isnan(x))
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continue;
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if (isinf(x))
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continue;
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// signed zeros already tested in unit tests
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if (signbit(x) && x == 0.0)
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continue;
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mpfr_set_d(input, x, MPFR_RNDN);
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int output = mpfr_tan(input, input, MPFR_RNDN);
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mpfr_subnormalize(input, output, MPFR_RNDN);
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double to_compare = mpfr_get_d(input, MPFR_RNDN);
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double result = LIBC_NAMESPACE::tan(x);
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if (result != to_compare) {
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std::cout << std::hexfloat << "Failing input: " << x << std::endl;
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std::cout << std::hexfloat << "Failing output: " << result << std::endl;
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std::cout << std::hexfloat << "Expected: " << to_compare << std::endl;
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__builtin_trap();
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}
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}
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mpfr_clear(input);
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return 0;
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}
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