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79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/* Generic bytes.h */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2005 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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#ifndef _AC_BYTES_H
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#define _AC_BYTES_H
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/* cross compilers should define both AC_INT{2,4}_TYPE in CPPFLAGS */
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#if !defined( AC_INT4_TYPE )
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/* use autoconf defines to provide sized typedefs */
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# if SIZEOF_LONG == 4
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# define AC_INT4_TYPE long
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# elif SIZEOF_INT == 4
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# define AC_INT4_TYPE int
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# elif SIZEOF_SHORT == 4
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# define AC_INT4_TYPE short
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# else
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# error "AC_INT4_TYPE?"
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# endif
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#endif
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typedef AC_INT4_TYPE ac_int4;
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typedef signed AC_INT4_TYPE ac_sint4;
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typedef unsigned AC_INT4_TYPE ac_uint4;
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#if !defined( AC_INT2_TYPE )
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# if SIZEOF_SHORT == 2
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# define AC_INT2_TYPE short
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# elif SIZEOF_INT == 2
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# define AC_INT2_TYPE int
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# elif SIZEOF_LONG == 2
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# define AC_INT2_TYPE long
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# else
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# error "AC_INT2_TYPE?"
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# endif
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#endif
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#if defined( AC_INT2_TYPE )
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typedef AC_INT2_TYPE ac_int2;
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typedef signed AC_INT2_TYPE ac_sint2;
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typedef unsigned AC_INT2_TYPE ac_uint2;
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#endif
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#ifndef BYTE_ORDER
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/* cross compilers should define BYTE_ORDER in CPPFLAGS */
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/*
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* Definitions for byte order, according to byte significance from low
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* address to high.
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*/
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#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
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#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
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#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
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/* assume autoconf's AC_C_BIGENDIAN has been ran */
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/* if it hasn't, we assume (maybe falsely) the order is LITTLE ENDIAN */
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# ifdef WORDS_BIGENDIAN
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# define BYTE_ORDER BIG_ENDIAN
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# else
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# define BYTE_ORDER LITTLE_ENDIAN
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# endif
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#endif /* BYTE_ORDER */
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#endif /* _AC_BYTES_H */
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