/[mcrypt]/module-skipjack/lib/mcrypt_modules.h
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Annotation of /module-skipjack/lib/mcrypt_modules.h

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Revision 1.2 - (hide annotations)
Sat Oct 7 18:27:38 2000 UTC (23 years, 5 months ago) by nmav
Branch: MAIN
CVS Tags: libmcrypt_2_4_16, HEAD
Changes since 1.1: +33 -5 lines
File MIME type: text/plain
added support for local swap functions (if available)

1 nmav 1.2 #define rotl32(x,n) (((x) << ((word32)(n))) | ((x) >> (32 - (word32)(n))))
2     #define rotr32(x,n) (((x) >> ((word32)(n))) | ((x) << (32 - (word32)(n))))
3 nmav 1.1 #define rotl16(x,n) (((x) << ((word16)(n))) | ((x) >> (16 - (word16)(n))))
4     #define rotr16(x,n) (((x) >> ((word16)(n))) | ((x) << (16 - (word16)(n))))
5    
6 nmav 1.2 /* Use hardware rotations.. when available */
7     #ifdef swap32
8     # define byteswap32(x) swap32(x)
9     #else
10     # ifdef swap_32
11     # define byteswap32(x) swap_32(x)
12     # else
13     # ifdef bswap_32
14     # define byteswap32(x) bswap_32(x)
15     # else
16     # define byteswap32(x) ((rotl32(x, 8) & 0x00ff00ff) | (rotr32(x, 8) & 0xff00ff00))
17     # endif
18     # endif
19     #endif
20    
21     #ifdef swap16
22     # define byteswap16(x) swap16(x)
23     #else
24     # ifdef swap_16
25     # define byteswap16(x) swap_16(x)
26     # else
27     # ifdef bswap_16
28     # define byteswap16(x) bswap_16(x)
29     # else
30     # define byteswap16(x) ((rotl16(x, 8) & 0x00ff) | (rotr16(x, 8) & 0xff00))
31     # endif
32     # endif
33     #endif
34    
35    
36     #define Bzero(x, y) memset(x, 0, y)

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