mirror of
https://https.git.savannah.gnu.org/git/bash.git
synced 2026-06-22 21:37:58 +02:00
Jari Aalto
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/* typemax.h -- encapsulate max values for long, long long, etc. */
|
|
|
|
/* Copyright (C) 2001 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Bash, the Bourne Again SHell.
|
|
|
|
Bash is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free
|
|
Software Foundation; either version 2, or (at your option) any later
|
|
version.
|
|
|
|
Bash 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 General Public License
|
|
for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with Bash; see the file COPYING. If not, write to the Free Software
|
|
Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
|
|
|
|
/*
|
|
* NOTE: This should be included after config.h, limits.h, stdint.h, and
|
|
* inttypes.h
|
|
*/
|
|
|
|
#ifndef _SH_TYPEMAX_H
|
|
#define _SH_TYPEMAX_H
|
|
|
|
#ifndef CHAR_BIT
|
|
# define CHAR_BIT 8
|
|
#endif
|
|
|
|
/* Nonzero if the integer type T is signed. */
|
|
#ifndef TYPE_SIGNED
|
|
# define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
|
|
#endif
|
|
|
|
#ifndef TYPE_MINIMUM
|
|
# define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
|
|
? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \
|
|
: (t) 0))
|
|
#endif
|
|
|
|
#ifndef TYPE_MAXIMUM
|
|
# define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
|
|
#endif
|
|
|
|
#ifdef HAVE_LONG_LONG
|
|
# ifndef LLONG_MAX
|
|
# define LLONG_MAX TYPE_MAXIMUM(long long int)
|
|
# define LLONG_MIN TYPE_MINIMUM(long long int)
|
|
# endif
|
|
# ifndef ULLONG_MAX
|
|
# define ULLONG_MAX TYPE_MAXIMUM(unsigned long long int)
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef ULONG_MAX
|
|
# define ULONG_MAX ((unsigned long) ~(unsigned long) 0)
|
|
#endif
|
|
|
|
#ifndef LONG_MAX
|
|
# define LONG_MAX ((long int) (ULONG_MAX >> 1))
|
|
# define LONG_MIN ((long int) (-LONG_MAX - 1L))
|
|
#endif
|
|
|
|
#ifndef INT_MAX /* ouch */
|
|
# define INT_MAX TYPE_MAXIMUM(int)
|
|
# define INT_MIN TYPE_MINIMUM(int)
|
|
# define UINT_MAX ((unsigned int) ~(unsigned int)0)
|
|
#endif
|
|
|
|
/* workaround for gcc bug in versions < 2.7 */
|
|
#if defined (HAVE_LONG_LONG) && __GNUC__ == 2 && __GNUC_MINOR__ < 7
|
|
static const unsigned long long int maxquad = ULLONG_MAX;
|
|
# undef ULLONG_MAX
|
|
# define ULLONG_MAX maxquad
|
|
#endif
|
|
|
|
#endif /* _SH_TYPEMAX_H */
|