42 lines
1.1 KiB
C
Executable File
42 lines
1.1 KiB
C
Executable File
/*
|
|
(c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
|
See the copyright notice in the ACK home directory, in the file "Copyright".
|
|
*/
|
|
|
|
/* $Header$ */
|
|
|
|
#include <byte_order.h>
|
|
|
|
#if CHAR_UNSIGNED
|
|
#define Xchar(ch) (ch)
|
|
#else
|
|
#define Xchar(ch) ((ch) & 0377)
|
|
#endif
|
|
|
|
#define BYTES_REVERSED (MSB_AT_LOW_ADDRESS != FL_MSB_AT_LOW_ADDRESS)
|
|
#define WORDS_REVERSED (MSW_AT_LOW_ADDRESS != FL_MSW_AT_LOW_ADDRESS)
|
|
#define LONGS_REVERSED (FL_MSL_AT_LOW_ADDRESS)
|
|
|
|
#if BYTES_REVERSED
|
|
#define uget2(c) (Xchar((c)[1]) | ((unsigned) Xchar((c)[0]) << 8))
|
|
#define Xput2(i, c) (((c)[1] = (i)), ((c)[0] = (i) >> 8))
|
|
#define put2(i, c) { register int j = (i); Xput2(j, c); }
|
|
#else
|
|
#define uget2(c) (* ((unsigned short *) (c)))
|
|
#define Xput2(i, c) (* ((short *) (c)) = (i))
|
|
#define put2(i, c) Xput2(i, c)
|
|
#endif
|
|
|
|
#define get2(c) ((short) uget2(c))
|
|
|
|
#if WORDS_REVERSED || BYTES_REVERSED
|
|
#define get4(c) (uget2((c)+2) | ((long) uget2(c) << 16))
|
|
#define put4(l, c) { register long x=(l); \
|
|
Xput2((int)x,(c)+2); \
|
|
Xput2((int)(x>>16),(c)); \
|
|
}
|
|
#else
|
|
#define get4(c) (* ((long *) (c)))
|
|
#define put4(l, c) (* ((long *) (c)) = (l))
|
|
#endif
|