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/* __sigset_t manipulators. Generic/BSD version.
Copyright (C) 1991-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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, see
<http://www.gnu.org/licenses/>. */
#ifndef _SIGSETOPS_H
#define _SIGSETOPS_H 1
#include <signal.h>
/* Return a mask that includes SIG only. The cast to `sigset_t' avoids
overflow if `sigset_t' is wider than `int'. */
# define __sigmask(sig) (((__sigset_t) 1) << ((sig) - 1))
#define __sigemptyset(set) \
(__extension__ ({ \
*(set) = (__sigset_t) 0; \
(void)0; \
}))
#define __sigfillset(set) \
(__extension__ ({ \
*(set) = ~(__sigset_t) 0; \
(void)0; \
}))
# define __sigisemptyset(set) \
(*(set) == (__sigset_t) 0)
# define __sigandset(dest, left, right) \
(__extension__ ({ \
*(dest) = *(left) & *(right); \
(void)0; \
}))
# define __sigorset(dest, left, right) \
(__extension__ ({ \
*(dest) = *(left) | *(right); \
(void)0; \
}))
/* These macros needn't check for a bogus signal number;
checking is done in the non-__ versions. */
# define __sigismember(set, sig) \
(__extension__ ({ \
__sigset_t __mask = __sigmask (sig); \
*(set) & __mask ? 1 : 0; \
}))
# define __sigaddset(set, sig) \
(__extension__ ({ \
__sigset_t __mask = __sigmask (sig); \
*(set) |= __mask; \
(void)0; \
}))
# define __sigdelset(set, sig) \
(__extension__ ({ \
__sigset_t __mask = __sigmask (sig); \
*(set) &= ~__mask; \
(void)0; \
}))
#endif
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