5 * Author: Tatu Ylonen <ylo@cs.hut.fi>
7 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
10 * Created: Wed Jun 28 22:36:30 1995 ylo
12 * Macros for storing and retrieving data in msb first and lsb first order.
21 /*------------ macros for storing/extracting msb first words -------------*/
23 #define GET_32BIT(cp) (((unsigned long)(unsigned char)(cp)[0] << 24) | \
24 ((unsigned long)(unsigned char)(cp)[1] << 16) | \
25 ((unsigned long)(unsigned char)(cp)[2] << 8) | \
26 ((unsigned long)(unsigned char)(cp)[3]))
28 #define GET_16BIT(cp) (((unsigned long)(unsigned char)(cp)[0] << 8) | \
29 ((unsigned long)(unsigned char)(cp)[1]))
31 #define PUT_32BIT(cp, value) do { \
32 (cp)[0] = (value) >> 24; \
33 (cp)[1] = (value) >> 16; \
34 (cp)[2] = (value) >> 8; \
35 (cp)[3] = (value); } while (0)
37 #define PUT_16BIT(cp, value) do { \
38 (cp)[0] = (value) >> 8; \
39 (cp)[1] = (value); } while (0)
41 /*------------ macros for storing/extracting lsb first words -------------*/
43 #define GET_32BIT_LSB_FIRST(cp) \
44 (((unsigned long)(unsigned char)(cp)[0]) | \
45 ((unsigned long)(unsigned char)(cp)[1] << 8) | \
46 ((unsigned long)(unsigned char)(cp)[2] << 16) | \
47 ((unsigned long)(unsigned char)(cp)[3] << 24))
49 #define GET_16BIT_LSB_FIRST(cp) \
50 (((unsigned long)(unsigned char)(cp)[0]) | \
51 ((unsigned long)(unsigned char)(cp)[1] << 8))
53 #define PUT_32BIT_LSB_FIRST(cp, value) do { \
55 (cp)[1] = (value) >> 8; \
56 (cp)[2] = (value) >> 16; \
57 (cp)[3] = (value) >> 24; } while (0)
59 #define PUT_16BIT_LSB_FIRST(cp, value) do { \
61 (cp)[1] = (value) >> 8; } while (0)