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Comparing libecb/ecb.h (file contents):
Revision 1.17 by root, Thu May 26 18:36:00 2011 UTC vs.
Revision 1.20 by root, Thu May 26 19:21:42 2011 UTC

… …
32 32
33#include <inttypes.h> 33#include <inttypes.h>
34 34
35/* many compilers define _GNUC_ to some versions but then only implement 35/* many compilers define _GNUC_ to some versions but then only implement
36 * what their idiot authors think are the "more important" extensions, 36 * what their idiot authors think are the "more important" extensions,
37 * causing enourmous grief for some better fake benchmark numbers or so. 37 * causing enourmous grief in return for some better fake benchmark numbers.
38 * or so.
38 * we try to detect these and simply assume they are not gcc - if they have 39 * we try to detect these and simply assume they are not gcc - if they have
39 * an issue with that they should have done it right in the first place. 40 * an issue with that they should have done it right in the first place.
40 */ 41 */
41#ifndef ECB_GCC_VERSION 42#ifndef ECB_GCC_VERSION
42# if defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__llvm__) 43# if defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__llvm__)
… …
95/* booleans, not the expression. */ 96/* booleans, not the expression. */
96#define ecb_unlikely(expr) ecb_expect (!!(expr), 0) 97#define ecb_unlikely(expr) ecb_expect (!!(expr), 0)
97#define ecb_likely(expr) ecb_expect (!!(expr), 1) 98#define ecb_likely(expr) ecb_expect (!!(expr), 1)
98 99
99/* try to tell the compiler that some condition is definitely true */ 100/* try to tell the compiler that some condition is definitely true */
100#define ecb_assume(cond) do { if (!(cond)) unreachable (); } while (0) 101#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
101 102
102/* count trailing zero bits and count # of one bits */ 103/* count trailing zero bits and count # of one bits */
103#if ECB_GCC_VERSION(3,4) 104#if ECB_GCC_VERSION(3,4)
104#define ecb_ctz32 (x) __builtin_ctz (x) 105#define ecb_ctz32 (x) __builtin_ctz (x)
105#define ecb_popcount32 (x) __builtin_popcount (x) 106#define ecb_popcount32 (x) __builtin_popcount (x)
106#else 107#else
107ECB_HEADER_INLINE int ecb_ctz32 (uint32_t x) ecb_const; 108ECB_HEADER_INLINE int ecb_ctz32 (uint32_t x) ecb_const;
108ECB_HEADER_INLINE 109ECB_HEADER_INLINE
109ecb_ctz32 (uint32_t x) 110ecb_ctz32 (uint32_t x)
110{ 111{
111 int r = 0; 112 int r = 0;
112 113
… …
134} 135}
135#endif 136#endif
136 137
137#if ECB_GCC_VERSION(4,3) 138#if ECB_GCC_VERSION(4,3)
138# define ecb_bswap32(x) __builtin_bswap32 (x) 139# define ecb_bswap32(x) __builtin_bswap32 (x)
140# define ecb_bswap16(x) (__builtin_bswap32(x) >> 16)
139#else 141#else
140ECB_HEADER_INLINE uint32_t ecb_bswap32 (uint32_t x) ecb_const; 142ECB_HEADER_INLINE uint32_t ecb_bswap32 (uint32_t x) ecb_const;
141ECB_HEADER_INLINE uint32_t 143ECB_HEADER_INLINE uint32_t
142ecb_bswap32 (uint32_t x) 144ecb_bswap32 (uint32_t x)
143{ 145{
144 return (x >> 24) 146 return (x >> 24)
145 | ((x >> 8) & 0x0000ff00) 147 | ((x >> 8) & 0x0000ff00)
146 | ((x << 8) & 0x00ff0000) 148 | ((x << 8) & 0x00ff0000)
147 | (x << 24); 149 | (x << 24);
148} 150}
151
152ECB_HEADER_INLINE uint32_t ecb_bswap16 (uint32_t x) ecb_const;
153ECB_HEADER_INLINE uint32_t
154ecb_bswap16 (uint32_t x)
155{
156 return ((x >> 8) & 0xff)
157 | ((x << 8) & 0x00ff0000)
158 | (x << 24);
159}
149#endif 160#endif
150 161
151#if ECB_GCC_VERSION(4,5) 162#if ECB_GCC_VERSION(4,5)
152# define ecb_unreachable() __builtin_unreachable () 163# define ecb_unreachable() __builtin_unreachable ()
153#else 164#else

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