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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:33:23 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:33:23 +0000 |
commit | 1d5cace9db9aef76f26b2d7ba54bbb76443b00b2 (patch) | |
tree | 314a15dd1aa103da13bdc83ba1d2105a290bc5ba /include/typemax.h | |
parent | Initial commit. (diff) | |
download | bash-upstream.tar.xz bash-upstream.zip |
Adding upstream version 5.0.upstream/5.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/typemax.h')
-rw-r--r-- | include/typemax.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/include/typemax.h b/include/typemax.h new file mode 100644 index 0000000..0f69638 --- /dev/null +++ b/include/typemax.h @@ -0,0 +1,112 @@ +/* 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>. +*/ + +/* + * 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_SIGNED_MAGNITUDE +# define TYPE_SIGNED_MAGNITUDE(t) ((t) ~ (t) 0 < (t) -1) +#endif + +#ifndef TYPE_WIDTH +# define TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT) +#endif + +#ifndef TYPE_MINIMUM +# define TYPE_MINIMUM(t) ((t) ~ TYPE_MAXIMUM (t)) +#endif + +#ifndef TYPE_MAXIMUM +# define TYPE_MAXIMUM(t) \ + ((t) (! TYPE_SIGNED (t) \ + ? (t) -1 \ + : ((((t) 1 << (TYPE_WIDTH (t) - 2)) - 1) * 2 + 1))) +#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 + +#if !defined (INTMAX_MAX) || !defined (INTMAX_MIN) + +#if SIZEOF_INTMAX_T == SIZEOF_LONG_LONG +# define INTMAX_MAX LLONG_MAX +# define INTMAX_MIN LLONG_MIN +#elif SIZEOF_INTMAX_T == SIZEOF_LONG +# define INTMAX_MAX LONG_MAX +# define INTMAX_MIN LONG_MIN +#else +# define INTMAX_MAX INT_MAX +# define INTMAX_MIN INT_MIN +#endif + +#endif + +#ifndef SSIZE_MAX +# define SSIZE_MAX 32767 /* POSIX minimum max */ +#endif + +#ifndef SIZE_MAX +# define SIZE_MAX 65535 /* POSIX minimum max */ +#endif + +#endif /* _SH_TYPEMAX_H */ |