signal/sigsetops.h

   1 /* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 /* Definitions relevant to functions that operate on `sigset_t's.  */
  20
  21 #include <ansidecl.h>
  22 #include <errno.h>
  23 #include <signal.h>
  24 #include <string.h>
  25
  26 #define BITS            (_NSIG - 1)
  27 #define ELT(signo)      (((signo) - 1) / BITS)
  28 #define MASK(signo)     (1 << (((signo) - 1) % BITS))
  29
  30 #undef  sigemptyset
  31 #undef  sigfillset
  32 #undef  sigaddset
  33 #undef  sigdelset
  34 #undef  sigismember