1/* Generic bytes.h */ 2/* $OpenLDAP$ */ 3/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 4 * 5 * Copyright 1998-2011 The OpenLDAP Foundation. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted only as authorized by the OpenLDAP 10 * Public License. 11 * 12 * A copy of this license is available in file LICENSE in the 13 * top-level directory of the distribution or, alternatively, at 14 * <http://www.OpenLDAP.org/license.html>. 15 */ 16 17#ifndef _AC_BYTES_H 18#define _AC_BYTES_H 19 20/* cross compilers should define both AC_INT{2,4}_TYPE in CPPFLAGS */ 21 22#if !defined( AC_INT4_TYPE ) 23 /* use autoconf defines to provide sized typedefs */ 24# if SIZEOF_LONG == 4 25# define AC_INT4_TYPE long 26# elif SIZEOF_INT == 4 27# define AC_INT4_TYPE int 28# elif SIZEOF_SHORT == 4 29# define AC_INT4_TYPE short 30# else 31# error "AC_INT4_TYPE?" 32# endif 33#endif 34 35typedef AC_INT4_TYPE ac_int4; 36typedef signed AC_INT4_TYPE ac_sint4; 37typedef unsigned AC_INT4_TYPE ac_uint4; 38 39#if !defined( AC_INT2_TYPE ) 40# if SIZEOF_SHORT == 2 41# define AC_INT2_TYPE short 42# elif SIZEOF_INT == 2 43# define AC_INT2_TYPE int 44# elif SIZEOF_LONG == 2 45# define AC_INT2_TYPE long 46# else 47# error "AC_INT2_TYPE?" 48# endif 49#endif 50 51#if defined( AC_INT2_TYPE ) 52typedef AC_INT2_TYPE ac_int2; 53typedef signed AC_INT2_TYPE ac_sint2; 54typedef unsigned AC_INT2_TYPE ac_uint2; 55#endif 56 57#ifndef BYTE_ORDER 58/* cross compilers should define BYTE_ORDER in CPPFLAGS */ 59 60/* 61 * Definitions for byte order, according to byte significance from low 62 * address to high. 63 */ 64#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */ 65#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */ 66#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */ 67 68/* assume autoconf's AC_C_BIGENDIAN has been ran */ 69/* if it hasn't, we assume (maybe falsely) the order is LITTLE ENDIAN */ 70# ifdef __BIG_ENDIAN__ 71# define BYTE_ORDER BIG_ENDIAN 72# else 73# define BYTE_ORDER LITTLE_ENDIAN 74# endif 75 76#endif /* BYTE_ORDER */ 77 78#endif /* _AC_BYTES_H */ 79