path: root/c/src/exec/posix/src/sigismember.c

/*
 *  3.3.3 Manipulate Signal Sets, P1003.1b-1993, p. 69
 *
 *  COPYRIGHT (c) 1989-1999.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.OARcorp.com/rtems/license.html.
 *
 *  $Id$
 */


#include <pthread.h>
#include <errno.h>

#include <rtems/system.h>
#include <rtems/posix/pthread.h>
#include <rtems/posix/psignal.h>
#include <rtems/seterr.h>

int sigismember(
  const sigset_t   *set,
  int               signo
)
{
  if ( !set )
    set_errno_and_return_minus_one( EINVAL );

  if ( !signo )
    return 0;

  if ( !is_valid_signo(signo) )
    set_errno_and_return_minus_one( EINVAL );

  if ( *set & signo_to_mask(signo) )
    return 1;

  return 0;
}