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Diffstat (limited to 'include/ac/bytes.h')
| -rw-r--r-- | include/ac/bytes.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/include/ac/bytes.h b/include/ac/bytes.h new file mode 100644 index 0000000..28e242c --- /dev/null +++ b/include/ac/bytes.h @@ -0,0 +1,78 @@ +/* Generic bytes.h */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1998-2018 The OpenLDAP Foundation. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted only as authorized by the OpenLDAP + * Public License. + * + * A copy of this license is available in file LICENSE in the + * top-level directory of the distribution or, alternatively, at + * <http://www.OpenLDAP.org/license.html>. + */ + +#ifndef _AC_BYTES_H +#define _AC_BYTES_H + +/* cross compilers should define both AC_INT{2,4}_TYPE in CPPFLAGS */ + +#if !defined( AC_INT4_TYPE ) + /* use autoconf defines to provide sized typedefs */ +# if SIZEOF_LONG == 4 +# define AC_INT4_TYPE long +# elif SIZEOF_INT == 4 +# define AC_INT4_TYPE int +# elif SIZEOF_SHORT == 4 +# define AC_INT4_TYPE short +# else +# error "AC_INT4_TYPE?" +# endif +#endif + +typedef AC_INT4_TYPE ac_int4; +typedef signed AC_INT4_TYPE ac_sint4; +typedef unsigned AC_INT4_TYPE ac_uint4; + +#if !defined( AC_INT2_TYPE ) +# if SIZEOF_SHORT == 2 +# define AC_INT2_TYPE short +# elif SIZEOF_INT == 2 +# define AC_INT2_TYPE int +# elif SIZEOF_LONG == 2 +# define AC_INT2_TYPE long +# else +# error "AC_INT2_TYPE?" +# endif +#endif + +#if defined( AC_INT2_TYPE ) +typedef AC_INT2_TYPE ac_int2; +typedef signed AC_INT2_TYPE ac_sint2; +typedef unsigned AC_INT2_TYPE ac_uint2; +#endif + +#ifndef BYTE_ORDER +/* cross compilers should define BYTE_ORDER in CPPFLAGS */ + +/* + * Definitions for byte order, according to byte significance from low + * address to high. + */ +#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */ +#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */ +#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */ + +/* assume autoconf's AC_C_BIGENDIAN has been ran */ +/* if it hasn't, we assume (maybe falsely) the order is LITTLE ENDIAN */ +# ifdef WORDS_BIGENDIAN +# define BYTE_ORDER BIG_ENDIAN +# else +# define BYTE_ORDER LITTLE_ENDIAN +# endif + +#endif /* BYTE_ORDER */ + +#endif /* _AC_BYTES_H */ |