glibc/sysdeps/unix/sysv/linux/sigset-cvt-mask.h

/* Convert between lowlevel sigmask and libc representation of sigset_t.
   Linux version.
   Copyright (C) 1998 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Joe Keane <jgk@jgk.org>.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#define sigset_set_old_mask(set, mask) \
  do {									      \
    unsigned long int *__ptr;						      \
    int __cnt;								      \
    __ptr = &(set)->__val[0];						      \
    *__ptr++ = (unsigned long int) (mask);				      \
    __cnt = _SIGSET_NWORDS - 2;						      \
    do									      \
      *__ptr++ = 0ul;							      \
    while (--__cnt >= 0);						      \
  } while (0)

#define sigset_get_old_mask(set, mask) \
  ((mask) = (unsigned int) (set)->__val[0])