1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
//===-- sincos_fuzz.cpp ---------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// Fuzzing test for llvm-libc cos implementation.
///
//===----------------------------------------------------------------------===//
#include "src/math/sincos.h"
#include "utils/MPFRWrapper/mpfr_inc.h"
#include <math.h>
extern "C" int LLVMFuzzerTestOneInput(double x) {
// remove NaN and inf as preconditions
if (isnan(x) || isinf(x))
return 0;
// signed zeros already tested in unit tests
if (signbit(x) && x == 0.0)
return 0;
mpfr_t input;
mpfr_t sin_x;
mpfr_t cos_x;
mpfr_init2(input, 53);
mpfr_init2(sin_x, 53);
mpfr_init2(cos_x, 53);
mpfr_set_d(input, x, MPFR_RNDN);
int output = mpfr_sin_cos(sin_x, cos_x, input, MPFR_RNDN);
mpfr_subnormalize(sin_x, output, MPFR_RNDN);
mpfr_subnormalize(cos_x, output, MPFR_RNDN);
double to_compare_sin = mpfr_get_d(sin_x, MPFR_RNDN);
double to_compare_cos = mpfr_get_d(cos_x, MPFR_RNDN);
double sin_res, cos_res;
LIBC_NAMESPACE::sincos(x, &sin_res, &cos_res);
if (sin_res != to_compare_sin || cos_res != to_compare_cos)
__builtin_trap();
mpfr_clear(input);
mpfr_clear(sin_x);
mpfr_clear(cos_x);
return 0;
}
|
