gnupg/include/types.h

/* types.h - some common typedefs
 *	Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * GnuPG 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.
 *
 * GnuPG 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 this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef G10_TYPES_H
#define G10_TYPES_H

#ifdef HAVE_INTTYPES_H
/* For uint64_t */
#include <inttypes.h>
#endif

/* The AC_CHECK_SIZEOF() in configure fails for some machines.
 * we provide some fallback values here */
#if !SIZEOF_UNSIGNED_SHORT
#undef SIZEOF_UNSIGNED_SHORT
#define SIZEOF_UNSIGNED_SHORT 2
#endif
#if !SIZEOF_UNSIGNED_INT
#undef SIZEOF_UNSIGNED_INT
#define SIZEOF_UNSIGNED_INT 4
#endif
#if !SIZEOF_UNSIGNED_LONG
#undef SIZEOF_UNSIGNED_LONG
#define SIZEOF_UNSIGNED_LONG 4
#endif


#include <sys/types.h>


#ifndef HAVE_BYTE_TYPEDEF
#undef byte	    /* maybe there is a macro with this name */
#ifndef __riscos__
typedef unsigned char byte;
#else 
/* Norcroft treats char  = unsigned char  as legal assignment
               but char* = unsigned char* as illegal assignment
   and the same applies to the signed variants as well  */
typedef char byte;
#endif
#define HAVE_BYTE_TYPEDEF
#endif

#ifndef HAVE_USHORT_TYPEDEF
#undef ushort     /* maybe there is a macro with this name */
typedef unsigned short ushort;
#define HAVE_USHORT_TYPEDEF
#endif

#ifndef HAVE_ULONG_TYPEDEF
#undef ulong	    /* maybe there is a macro with this name */
typedef unsigned long ulong;
#define HAVE_ULONG_TYPEDEF
#endif

#ifndef HAVE_U16_TYPEDEF
#undef u16	    /* maybe there is a macro with this name */
#if SIZEOF_UNSIGNED_INT == 2
typedef unsigned int   u16;
#elif SIZEOF_UNSIGNED_SHORT == 2
typedef unsigned short u16;
#else
#error no typedef for u16
#endif
#define HAVE_U16_TYPEDEF
#endif

#ifndef HAVE_U32_TYPEDEF
#undef u32	    /* maybe there is a macro with this name */
#if SIZEOF_UNSIGNED_INT == 4
typedef unsigned int u32;
#elif SIZEOF_UNSIGNED_LONG == 4
typedef unsigned long u32;
#else
#error no typedef for u32
#endif
#define HAVE_U32_TYPEDEF
#endif

/****************
 * Warning: Some systems segfault when this u64 typedef and
 * the dummy code in cipher/md.c is not available.  Examples are
 * Solaris and IRIX.
 */
#ifndef HAVE_U64_TYPEDEF
#undef u64	    /* maybe there is a macro with this name */
#if SIZEOF_UINT64_T == 8
typedef uint64_t u64;
#define U64_C(c) (UINT64_C(c))
#define HAVE_U64_TYPEDEF
#elif SIZEOF_UNSIGNED_INT == 8
typedef unsigned int u64;
#define U64_C(c) (c ## U)
#define HAVE_U64_TYPEDEF
#elif SIZEOF_UNSIGNED_LONG == 8
typedef unsigned long u64;
#define U64_C(c) (c ## UL)
#define HAVE_U64_TYPEDEF
#elif SIZEOF_UNSIGNED_LONG_LONG == 8
typedef unsigned long long u64;
#define U64_C(c) (c ## ULL)
#define HAVE_U64_TYPEDEF
#endif
#endif

typedef union {
    int a;
    short b;
    char c[1];
    long d;
#ifdef HAVE_U64_TYPEDEF
    u64 e;
#endif
    float f;
    double g;
} PROPERLY_ALIGNED_TYPE;

#endif /*G10_TYPES_H*/