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Comparing libecb/ecb.h (file contents):
Revision 1.38 by root, Sat Jun 11 14:02:40 2011 UTC vs.
Revision 1.61 by root, Thu Aug 4 14:27:40 2011 UTC

… …
28 */ 28 */
29 29
30#ifndef ECB_H 30#ifndef ECB_H
31#define ECB_H 31#define ECB_H
32 32
33#ifdef _WIN32
34 typedef signed char int8_t;
35 typedef unsigned char uint8_t;
36 typedef signed short int16_t;
37 typedef unsigned short uint16_t;
38 typedef signed int int32_t;
39 typedef unsigned int uint32_t;
40 #if __GNUC__
41 typedef signed long long int64_t;
42 typedef unsigned long long uint64_t;
43 #else /* _MSC_VER || __BORLANDC__ */
44 typedef signed __int64 int64_t;
45 typedef unsigned __int64 uint64_t;
46 #endif
47#else
33#include <inttypes.h> 48 #include <inttypes.h>
49#endif
34 50
35/* many compilers define _GNUC_ to some versions but then only implement 51/* many compilers define _GNUC_ to some versions but then only implement
36 * what their idiot authors think are the "more important" extensions, 52 * what their idiot authors think are the "more important" extensions,
37 * causing enourmous grief in return for some better fake benchmark numbers. 53 * causing enormous grief in return for some better fake benchmark numbers.
38 * or so. 54 * or so.
39 * we try to detect these and simply assume they are not gcc - if they have 55 * we try to detect these and simply assume they are not gcc - if they have
40 * an issue with that they should have done it right in the first place. 56 * an issue with that they should have done it right in the first place.
41 */ 57 */
42#ifndef ECB_GCC_VERSION 58#ifndef ECB_GCC_VERSION
43 #if defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__llvm__) 59 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
44 #define ECB_GCC_VERSION(major,minor) 0 60 #define ECB_GCC_VERSION(major,minor) 0
45 #else 61 #else
46 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 62 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
47 #endif 63 #endif
48#endif 64#endif
49 65
66/*****************************************************************************/
67
68/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
69/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
70
71#if ECB_NO_THREADS || ECB_NO_SMP
72 #define ECB_MEMORY_FENCE do { } while (0)
73 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
74 #define ECB_MEMORY_FENCE_RELEASE do { } while (0)
75#endif
76
77#ifndef ECB_MEMORY_FENCE
78 #if ECB_GCC_VERSION(2,5)
79 #if __x86
80 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
81 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
82 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
83 #elif __amd64
84 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
85 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
86 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
87 #endif
88 #endif
89#endif
90
91#ifndef ECB_MEMORY_FENCE
92 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER)
93 #define ECB_MEMORY_FENCE __sync_synchronize ()
94 #define ECB_MEMORY_FENCE_ACQUIRE __sync_synchronize () /* ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
95 #define ECB_MEMORY_FENCE_RELEASE __sync_synchronize () /* ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
96 #elif _MSC_VER >= 1400 /* VC++ 2005 */
97 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
98 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
99 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
100 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
101 #elif defined(_WIN32)
102 #include <WinNT.h>
103 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
104 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
105 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
106 #endif
107#endif
108
109#ifndef ECB_MEMORY_FENCE
110 /*
111 * if you get undefined symbol references to pthread_mutex_lock,
112 * or failure to find pthread.h, then you should implement
113 * the ECB_MEMORY_FENCE operations for your cpu/compiler
114 * OR provide pthread.h and link against the posix thread library
115 * of your system.
116 */
117 #include <pthread.h>
118 #define ECB_NEEDS_PTHREADS 1
119 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
120
121 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
122 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
123 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
124 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
125#endif
126
127/*****************************************************************************/
128
129#define ECB_C99 (__STDC_VERSION__ >= 199901L)
130
50#ifdef __cplusplus 131#if __cplusplus
51 #define ECB_INLINE static inline 132 #define ecb_inline static inline
52#elif ECB_GCC_VERSION(2,5) 133#elif ECB_GCC_VERSION(2,5)
53 #define ECB_INLINE static __inline__ 134 #define ecb_inline static __inline__
54#elif __STDC_VERSION__ >= 199901L 135#elif ECB_C99
55 #define ECB_INLINE static inline 136 #define ecb_inline static inline
56#else 137#else
57 #define ECB_INLINE static 138 #define ecb_inline static
58#endif 139#endif
59 140
60#if ECB_GCC_VERSION(3,3) 141#if ECB_GCC_VERSION(3,3)
61 #define ecb_restrict __restrict__ 142 #define ecb_restrict __restrict__
62#elif __STDC_VERSION__ >= 199901L 143#elif ECB_C99
63 #define ecb_restrict restrict 144 #define ecb_restrict restrict
64#else 145#else
65 #define ecb_restrict 146 #define ecb_restrict
66#endif 147#endif
67 148
… …
70#define ECB_CONCAT_(a, b) a ## b 151#define ECB_CONCAT_(a, b) a ## b
71#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 152#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
72#define ECB_STRINGIFY_(a) # a 153#define ECB_STRINGIFY_(a) # a
73#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 154#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
74 155
75#define ECB_HEADER_INLINE ECB_INLINE 156#define ecb_function_ ecb_inline
76 157
77#if ECB_GCC_VERSION(3,1) 158#if ECB_GCC_VERSION(3,1)
78 #define ecb_attribute(attrlist) __attribute__(attrlist) 159 #define ecb_attribute(attrlist) __attribute__(attrlist)
79 #define ecb_is_constant(expr) __builtin_constant_p (expr) 160 #define ecb_is_constant(expr) __builtin_constant_p (expr)
80 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 161 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
… …
88 169
89/* no emulation for ecb_decltype */ 170/* no emulation for ecb_decltype */
90#if ECB_GCC_VERSION(4,5) 171#if ECB_GCC_VERSION(4,5)
91 #define ecb_decltype(x) __decltype(x) 172 #define ecb_decltype(x) __decltype(x)
92#elif ECB_GCC_VERSION(3,0) 173#elif ECB_GCC_VERSION(3,0)
93 #define ecb_decltype(x) typeof(x) 174 #define ecb_decltype(x) __typeof(x)
94#endif 175#endif
95 176
96#define ecb_noinline ecb_attribute ((__noinline__)) 177#define ecb_noinline ecb_attribute ((__noinline__))
97#define ecb_noreturn ecb_attribute ((__noreturn__)) 178#define ecb_noreturn ecb_attribute ((__noreturn__))
98#define ecb_unused ecb_attribute ((__unused__)) 179#define ecb_unused ecb_attribute ((__unused__))
99#define ecb_const ecb_attribute ((__const__)) 180#define ecb_const ecb_attribute ((__const__))
100#define ecb_pure ecb_attribute ((__pure__)) 181#define ecb_pure ecb_attribute ((__pure__))
101 182
102#if ECB_GCC_VERSION(4,3) 183#if ECB_GCC_VERSION(4,3)
103 #define ecb_artificial ecb_attribute ((__artificial__)) /* 4.3 */ 184 #define ecb_artificial ecb_attribute ((__artificial__))
104 #define ecb_hot ecb_attribute ((__hot__)) /* 4.3 */ 185 #define ecb_hot ecb_attribute ((__hot__))
105 #define ecb_cold ecb_attribute ((__cold__)) /* 4.3 */ 186 #define ecb_cold ecb_attribute ((__cold__))
106#else 187#else
107 #define ecb_artificial 188 #define ecb_artificial
108 #define ecb_hot 189 #define ecb_hot
109 #define ecb_cold 190 #define ecb_cold
110#endif 191#endif
111 192
112/* put into if's if you are very sure that the expression */ 193/* put around conditional expressions if you are very sure that the */
113/* is mostly true or mostly false. note that these return */ 194/* expression is mostly true or mostly false. note that these return */
114/* booleans, not the expression. */ 195/* booleans, not the expression. */
115#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 196#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
116#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 197#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
117/* for compatibility to the rest of the world */ 198/* for compatibility to the rest of the world */
118#define ecb_likely(expr) ecb_expect_true (expr) 199#define ecb_likely(expr) ecb_expect_true (expr)
119#define ecb_unlikely(expr) ecb_expect_false (expr) 200#define ecb_unlikely(expr) ecb_expect_false (expr)
120 201
121/* try to tell the compiler that some condition is definitely true */
122#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
123
124/* count trailing zero bits and count # of one bits */ 202/* count trailing zero bits and count # of one bits */
125#if ECB_GCC_VERSION(3,4) 203#if ECB_GCC_VERSION(3,4)
204 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
205 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
206 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
126 #define ecb_ctz32(x) __builtin_ctz (x) 207 #define ecb_ctz32(x) __builtin_ctz (x)
208 #define ecb_ctz64(x) __builtin_ctzll (x)
127 #define ecb_popcount32(x) __builtin_popcount (x) 209 #define ecb_popcount32(x) __builtin_popcount (x)
210 /* no popcountll */
128#else 211#else
129 ECB_HEADER_INLINE int ecb_ctz32 (uint32_t x) ecb_const; 212 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
130 ECB_HEADER_INLINE int 213 ecb_function_ int
131 ecb_ctz32 (uint32_t x) 214 ecb_ctz32 (uint32_t x)
132 { 215 {
133 int r = 0; 216 int r = 0;
134 217
135 x &= -x; /* this isolates the lowest bit */ 218 x &= ~x + 1; /* this isolates the lowest bit */
136 219
220#if ECB_branchless_on_i386
221 r += !!(x & 0xaaaaaaaa) << 0;
222 r += !!(x & 0xcccccccc) << 1;
223 r += !!(x & 0xf0f0f0f0) << 2;
224 r += !!(x & 0xff00ff00) << 3;
225 r += !!(x & 0xffff0000) << 4;
226#else
137 if (x & 0xaaaaaaaa) r += 1; 227 if (x & 0xaaaaaaaa) r += 1;
138 if (x & 0xcccccccc) r += 2; 228 if (x & 0xcccccccc) r += 2;
139 if (x & 0xf0f0f0f0) r += 4; 229 if (x & 0xf0f0f0f0) r += 4;
140 if (x & 0xff00ff00) r += 8; 230 if (x & 0xff00ff00) r += 8;
141 if (x & 0xffff0000) r += 16; 231 if (x & 0xffff0000) r += 16;
232#endif
142 233
143 return r; 234 return r;
144 } 235 }
145 236
237 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
238 ecb_function_ int
239 ecb_ctz64 (uint64_t x)
240 {
241 int shift = x & 0xffffffffU ? 0 : 32;
242 return ecb_ctz32 (x >> shift) + shift;
243 }
244
146 ECB_HEADER_INLINE int ecb_popcount32 (uint32_t x) ecb_const; 245 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
147 ECB_HEADER_INLINE int 246 ecb_function_ int
148 ecb_popcount32 (uint32_t x) 247 ecb_popcount32 (uint32_t x)
149 { 248 {
150 x -= (x >> 1) & 0x55555555; 249 x -= (x >> 1) & 0x55555555;
151 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 250 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
152 x = ((x >> 4) + x) & 0x0f0f0f0f; 251 x = ((x >> 4) + x) & 0x0f0f0f0f;
153 x *= 0x01010101; 252 x *= 0x01010101;
154 253
155 return x >> 24; 254 return x >> 24;
156 } 255 }
256
257 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
258 ecb_function_ int ecb_ld32 (uint32_t x)
259 {
260 int r = 0;
261
262 if (x >> 16) { x >>= 16; r += 16; }
263 if (x >> 8) { x >>= 8; r += 8; }
264 if (x >> 4) { x >>= 4; r += 4; }
265 if (x >> 2) { x >>= 2; r += 2; }
266 if (x >> 1) { r += 1; }
267
268 return r;
269 }
270
271 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
272 ecb_function_ int ecb_ld64 (uint64_t x)
273 {
274 int r = 0;
275
276 if (x >> 32) { x >>= 32; r += 32; }
277
278 return r + ecb_ld32 (x);
279 }
157#endif 280#endif
281
282/* popcount64 is only available on 64 bit cpus as gcc builtin */
283/* so for this version we are lazy */
284ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
285ecb_function_ int
286ecb_popcount64 (uint64_t x)
287{
288 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
289}
290
291ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
292ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
293ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
294ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
295ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
296ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
297ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
298ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
299
300ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
301ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
302ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
303ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
304ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
305ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
306ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
307ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
158 308
159#if ECB_GCC_VERSION(4,3) 309#if ECB_GCC_VERSION(4,3)
160 #define ecb_bswap32(x) __builtin_bswap32 (x)
161 #define ecb_bswap16(x) (__builtin_bswap32(x) >> 16) 310 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
311 #define ecb_bswap32(x) __builtin_bswap32 (x)
312 #define ecb_bswap64(x) __builtin_bswap64 (x)
162#else 313#else
314 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
315 ecb_function_ uint16_t
316 ecb_bswap16 (uint16_t x)
317 {
318 return ecb_rotl16 (x, 8);
319 }
320
163 ECB_HEADER_INLINE uint32_t ecb_bswap32 (uint32_t x) ecb_const; 321 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
164 ECB_HEADER_INLINE uint32_t 322 ecb_function_ uint32_t
165 ecb_bswap32 (uint32_t x) 323 ecb_bswap32 (uint32_t x)
166 { 324 {
167 return (x >> 24) 325 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
168 | ((x >> 8) & 0x0000ff00)
169 | ((x << 8) & 0x00ff0000)
170 | (x << 24);
171 } 326 }
172 327
173 ECB_HEADER_INLINE uint32_t ecb_bswap16 (uint32_t x) ecb_const; 328 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
174 ECB_HEADER_INLINE uint32_t 329 ecb_function_ uint64_t
175 ecb_bswap16 (uint32_t x) 330 ecb_bswap64 (uint64_t x)
176 { 331 {
177 return ((x >> 8) & 0xff) 332 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
178 | ((x << 8) & 0x00ff0000)
179 | (x << 24);
180 } 333 }
181#endif 334#endif
182 335
183#if ECB_GCC_VERSION(4,5) 336#if ECB_GCC_VERSION(4,5)
184 #define ecb_unreachable() __builtin_unreachable () 337 #define ecb_unreachable() __builtin_unreachable ()
185#else 338#else
186 /* this seems to work fine, but gcc always emits a warning for it :/ */ 339 /* this seems to work fine, but gcc always emits a warning for it :/ */
187 ECB_HEADER_INLINE void ecb_unreachable (void) ecb_noreturn; 340 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
188 ECB_HEADER_INLINE void ecb_unreachable (void) { } 341 ecb_function_ void ecb_unreachable (void) { }
189#endif 342#endif
190 343
344/* try to tell the compiler that some condition is definitely true */
345#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
346
191ECB_HEADER_INLINE unsigned char ecb_byteorder_helper (void) ecb_const; 347ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
192ECB_HEADER_INLINE unsigned char 348ecb_function_ unsigned char
193ecb_byteorder_helper (void) 349ecb_byteorder_helper (void)
194{ 350{
195 const uint32_t u = 0x11223344; 351 const uint32_t u = 0x11223344;
196 return *(unsigned char *)&u; 352 return *(unsigned char *)&u;
197} 353}
198 354
199ECB_HEADER_INLINE ecb_bool ecb_big_endian (void) ecb_const; 355ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
200ECB_HEADER_INLINE ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }; 356ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
201ECB_HEADER_INLINE ecb_bool ecb_little_endian (void) ecb_const; 357ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
202ECB_HEADER_INLINE ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }; 358ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
203 359
204#if ECB_GCC_VERSION(3,0) 360#if ECB_GCC_VERSION(3,0) || ECB_C99
205 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 361 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
206#else 362#else
207 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 363 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
208#endif 364#endif
209 365
210#if ecb_cplusplus_does_not_suck 366#if ecb_cplusplus_does_not_suck
211 // does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) 367 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
212 template<typename T, int N> 368 template<typename T, int N>
213 static inline int ecb_array_length (const T (&arr)[N]) 369 static inline int ecb_array_length (const T (&arr)[N])
214 { 370 {
215 return N; 371 return N;
216 } 372 }
217#else 373#else
218 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 374 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
219#endif 375#endif
220 376
221ECB_INLINE uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
222ECB_INLINE uint32_t
223ecb_rotr32 (uint32_t x, unsigned int count)
224{
225 return (x << (32 - count)) | (x >> count);
226}
227
228ECB_INLINE uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
229ECB_INLINE uint32_t
230ecb_rotl32 (uint32_t x, unsigned int count)
231{
232 return (x >> (32 - count)) | (x << count);
233}
234
235#endif 377#endif
236 378

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