sysdeps/ieee754/ldbl-96/test-sinl-pseudo.c

   1 /* Test sinl for pseudo-zeros and unnormals for ldbl-96 (bug 25487).
   2    Copyright (C) 2020-2023 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
  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>