/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
#include <errno.h>
#include <signal.h>

int
sigismember(const sigset_t *_set, int _signo)
{
  if (_set == 0)
  {
    errno = EINVAL;
    return -1;
  }
  if (_signo < 0 || _signo >= 320)
    return 0;
  return _set->__bits[_signo >> 5] & (1U<<(_signo&31)) ? 1 : 0;
}