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>