| 1 | /* md5.h - Declaration of functions and data types used for MD5 sum
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| 2 | computing library functions.
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| 3 | Copyright 1995, 1996, 2000 Free Software Foundation, Inc.
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| 4 | NOTE: The canonical source of this file is maintained with the GNU C
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| 5 | Library. Bugs can be reported to [email protected].
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| 6 |
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| 7 | This program is free software; you can redistribute it and/or modify it
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| 8 | under the terms of the GNU General Public License as published by the
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| 9 | Free Software Foundation; either version 2, or (at your option) any
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| 10 | later version.
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| 11 |
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| 12 | This program is distributed in the hope that it will be useful,
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | GNU General Public License for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License
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| 18 | along with this program; if not, write to the Free Software Foundation,
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| 19 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 20 |
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| 21 | #ifndef _MD5_H
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| 22 | #define _MD5_H 1
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| 23 |
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| 24 | #include <stdio.h>
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| 25 |
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| 26 | #if defined HAVE_LIMITS_H || _LIBC
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| 27 | # include <limits.h>
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| 28 | #endif
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| 29 |
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| 30 | /* The following contortions are an attempt to use the C preprocessor
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| 31 | to determine an unsigned integral type that is 32 bits wide. An
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| 32 | alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
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| 33 | doing that would require that the configure script compile and *run*
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| 34 | the resulting executable. Locally running cross-compiled executables
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| 35 | is usually not possible. */
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| 36 |
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| 37 | #ifdef _LIBC
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| 38 | # include <sys/types.h>
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| 39 | typedef u_int32_t md5_uint32;
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| 40 | #else
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| 41 | # define INT_MAX_32_BITS 2147483647
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| 42 |
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| 43 | /* If UINT_MAX isn't defined, assume it's a 32-bit type.
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| 44 | This should be valid for all systems GNU cares about because
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| 45 | that doesn't include 16-bit systems, and only modern systems
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| 46 | (that certainly have <limits.h>) have 64+-bit integral types. */
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| 47 |
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| 48 | # ifndef INT_MAX
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| 49 | # define INT_MAX INT_MAX_32_BITS
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| 50 | # endif
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| 51 |
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| 52 | # if INT_MAX == INT_MAX_32_BITS
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| 53 | typedef unsigned int md5_uint32;
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| 54 | # else
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| 55 | # if SHRT_MAX == INT_MAX_32_BITS
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| 56 | typedef unsigned short md5_uint32;
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| 57 | # else
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| 58 | # if LONG_MAX == INT_MAX_32_BITS
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| 59 | typedef unsigned long md5_uint32;
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| 60 | # else
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| 61 | /* The following line is intended to evoke an error.
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| 62 | Using #error is not portable enough. */
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| 63 | "Cannot determine unsigned 32-bit data type."
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| 64 | # endif
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| 65 | # endif
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| 66 | # endif
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| 67 | #endif
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| 68 |
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| 69 | #undef __P
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| 70 | #if defined (__STDC__) && __STDC__
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| 71 | #define __P(x) x
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