1 /* Test sinl for pseudo-zeros and unnormals for ldbl-96 (bug 25487).
2 Copyright (C) 2020-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <math.h>
20 #include <math_ldbl.h>
21 #include <stdint.h>
22
23 static int
do_test(void)24 do_test (void)
25 {
26 for (int i = 0; i < 64; i++)
27 {
28 uint64_t sig = i == 63 ? 0 : 1ULL << i;
29 long double ld;
30 SET_LDOUBLE_WORDS (ld, 0x4141,
31 sig >> 32, sig & 0xffffffffULL);
32 /* The requirement is that no stack overflow occurs when the
33 pseudo-zero or unnormal goes through range reduction. */
34 volatile long double ldr;
35 ldr = sinl (ld);
36 (void) ldr;
37 }
38 return 0;
39 }
40
41 #include <support/test-driver.c>
42