1 /* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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. */
20 * ANSI Standard: 4.14/2.2.4.2 Limits of integral types <limits.h>
26 /* POSIX adds things to <limits.h>. */
27 #include <posix1_lim.h>
31 #include <posix2_lim.h>
37 /* Get the compiler's limits.h, which defines all the ANSI constants. */
38 #ifndef _LIBC_LIMITS_H_
39 #define _LIBC_LIMITS_H_ /* This tells it not to look for another. */
41 #ifndef _GCC_LIMITS_H_ /* This is what GCC's file defines. */
42 #include_next <limits.h>
45 #else /* Not GCC 2. */
47 /* We only protect from multiple inclusion here, because all the other
48 #include's protect themselves, and in GCC 2 we may #include_next through
49 multiple copies of this file before we get to GCC's. */
53 /* We don't have #include_next.
54 Define ANSI <limits.h> for standard 32-bit words. */
56 /* These assume 8-bit `char's, 16-bit `short int's,
57 and 32-bit `int's and `long int's. */
59 /* Number of bits in a `char'. */
62 /* Maximum length of any multibyte character in any locale.
63 Locale-writers should change this as necessary. */
66 /* Minimum and maximum values a `signed char' can hold. */
67 #define SCHAR_MIN (-128)
70 /* Maximum value an `unsigned char' can hold. (Minimum is 0.) */
72 #define UCHAR_MAX 255U
77 /* Minimum and maximum values a `char' can hold. */
78 #ifdef __CHAR_UNSIGNED__
80 #define CHAR_MAX UCHAR_MAX
82 #define CHAR_MIN SCHAR_MIN
83 #define CHAR_MAX SCHAR_MAX
86 /* Minimum and maximum values a `signed short int' can hold. */
87 #define SHRT_MIN (-32768)
88 #define SHRT_MAX 32767
90 /* Maximum value an `unsigned short int' can hold. (Minimum is 0.) */
91 #define USHRT_MAX 65535
93 /* Minimum and maximum values a `signed int' can hold. */
94 #define INT_MIN (- INT_MAX - 1)
95 #define INT_MAX 2147483647
97 /* Maximum value an `unsigned int' can hold. (Minimum is 0.) */
99 #define UINT_MAX 4294967295U
101 #define UINT_MAX 4294967295
106 /* Minimum and maximum values a `signed long int' can hold. */
107 #define LONG_MAX 9223372036854775807L
108 #define LONG_MIN (- LONG_MAX - 1L)
110 /* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */
111 #define ULONG_MAX 18446744073709551615L
115 /* Minimum and maximum values a `signed long int' can hold. */
116 #define LONG_MAX INT_MAX
117 #define LONG_MIN INT_MIN
119 /* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */
120 #define ULONG_MAX UINT_MAX
125 #endif /* limits.h */