citadel/typesize.h

   1 /* $Id$ */
   2
   3 /*
   4    This file defines typedefs for 8, 16, and 32 bit integers.  They are:
   5    cit_int8_t   default 8-bit int
   6    cit_int16_t  default 16-bit int
   7    cit_int32_t  default 32-bit int
   8    cit_int64_t  default 64-bit int (not implemented yet)
   9    cit_sint8_t  signed 8-bit int
  10    cit_sint16_t signed 16-bit int
  11    cit_sint32_t signed 32-bit int
  12    cit_sint64_t signed 64-bit int (not implemented yet)
  13    cit_uint8_t  unsigned 8-bit int
  14    cit_uint16_t unsigned 16-bit int
  15    cit_uint32_t unsigned 32-bit int
  16    cit_uint64_t unsigned 64-bit int (not implemented yet)
  17
  18    The sizes are determined during the configure process; see the
  19    AC_CHECK_SIZEOF macros in configure.in.  In no way do we assume that any
  20    given datatype is any particular width, e.g. we don't assume short is two
  21    bytes; we check for it specifically.
  22
  23    This might seem excessively paranoid, but I've seen some WEIRD systems
  24    and some bizarre compilers (Domain/OS for instance) in my time.
  25 */
  26
  27 #ifndef _CITADEL_UX_TYPESIZE_H
  28 #define _CITADEL_UX_TYPESIZE_H
  29
  30 /* Include sysdep.h if not already included */
  31 #ifndef CTDLDIR
  32 # include "sysdep.h"
  33 #endif
  34
  35 /* 8-bit - If this fails, your compiler is broken */
  36 #if SIZEOF_CHAR == 1
  37 typedef char cit_int8_t;
  38 typedef signed char cit_sint8_t;
  39 typedef unsigned char cit_uint8_t;
  40 #else
  41 # error Unable to find an 8-bit integer datatype
  42 #endif
  43
  44 /* 16-bit - If this fails, your compiler is broken */
  45 #if SIZEOF_SHORT == 2
  46 typedef short cit_int16_t;
  47 typedef signed short cit_sint16_t;
  48 typedef unsigned short cit_uint16_t;
  49 #elif SIZEOF_INT == 2
  50 typedef int cit_int16_t;
  51 typedef signed int cit_sint16_t;
  52 typedef unsigned int cit_uint16_t;
  53 #else
  54 # error Unable to find a 16-bit integer datatype
  55 #endif
  56
  57 /* 32-bit - If this fails, your compiler is broken */
  58 #if SIZEOF_INT == 4
  59 typedef int cit_int32_t;
  60 typedef signed int cit_sint32_t;
  61 typedef unsigned int cit_uint32_t;
  62 #elif SIZEOF_LONG == 4
  63 typedef long cit_int32_t;
  64 typedef signed long cit_sint32_t;
  65 typedef unsigned long cit_uint32_t;
  66 #else
  67 # error Unable to find a 32-bit integer datatype
  68 #endif
  69
  70 #endif /* _CITADEL_UX_TYPESIZE_H */