| 1 | /* |
1 | /* |
| 2 | * libecb - http://software.schmorp.de/pkg/libecb |
2 | * libecb - http://software.schmorp.de/pkg/libecb |
| 3 | * |
3 | * |
| 4 | * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> |
4 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
| 5 | * Copyright (©) 2011 Emanuele Giaquinta |
5 | * Copyright (©) 2011 Emanuele Giaquinta |
| 6 | * All rights reserved. |
6 | * All rights reserved. |
| 7 | * |
7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * Redistribution and use in source and binary forms, with or without modifica- |
| 9 | * tion, are permitted provided that the following conditions are met: |
9 | * tion, are permitted provided that the following conditions are met: |
| … | |
… | |
| 23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
| 26 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
26 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 27 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
28 | * |
|
|
29 | * Alternatively, the contents of this file may be used under the terms of |
|
|
30 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
31 | * in which case the provisions of the GPL are applicable instead of |
|
|
32 | * the above. If you wish to allow the use of your version of this file |
|
|
33 | * only under the terms of the GPL and not to allow others to use your |
|
|
34 | * version of this file under the BSD license, indicate your decision |
|
|
35 | * by deleting the provisions above and replace them with the notice |
|
|
36 | * and other provisions required by the GPL. If you do not delete the |
|
|
37 | * provisions above, a recipient may use your version of this file under |
|
|
38 | * either the BSD or the GPL. |
| 28 | */ |
39 | */ |
| 29 | |
40 | |
| 30 | #ifndef ECB_H |
41 | #ifndef ECB_H |
| 31 | #define ECB_H |
42 | #define ECB_H |
|
|
43 | |
|
|
44 | /* 16 bits major, 16 bits minor */ |
|
|
45 | #define ECB_VERSION 0x00010004 |
| 32 | |
46 | |
| 33 | #ifdef _WIN32 |
47 | #ifdef _WIN32 |
| 34 | typedef signed char int8_t; |
48 | typedef signed char int8_t; |
| 35 | typedef unsigned char uint8_t; |
49 | typedef unsigned char uint8_t; |
| 36 | typedef signed short int16_t; |
50 | typedef signed short int16_t; |
| … | |
… | |
| 38 | typedef signed int int32_t; |
52 | typedef signed int int32_t; |
| 39 | typedef unsigned int uint32_t; |
53 | typedef unsigned int uint32_t; |
| 40 | #if __GNUC__ |
54 | #if __GNUC__ |
| 41 | typedef signed long long int64_t; |
55 | typedef signed long long int64_t; |
| 42 | typedef unsigned long long uint64_t; |
56 | typedef unsigned long long uint64_t; |
| 43 | #else |
57 | #else /* _MSC_VER || __BORLANDC__ */ |
| 44 | typedef signed __int64 int64_t; |
58 | typedef signed __int64 int64_t; |
| 45 | typedef unsigned __int64 uint64_t; |
59 | typedef unsigned __int64 uint64_t; |
| 46 | #endif |
60 | #endif |
|
|
61 | #ifdef _WIN64 |
|
|
62 | #define ECB_PTRSIZE 8 |
|
|
63 | typedef uint64_t uintptr_t; |
|
|
64 | typedef int64_t intptr_t; |
|
|
65 | #else |
|
|
66 | #define ECB_PTRSIZE 4 |
|
|
67 | typedef uint32_t uintptr_t; |
|
|
68 | typedef int32_t intptr_t; |
|
|
69 | #endif |
| 47 | #else |
70 | #else |
| 48 | #include <inttypes.h> |
71 | #include <inttypes.h> |
|
|
72 | #if UINTMAX_MAX > 0xffffffffU |
|
|
73 | #define ECB_PTRSIZE 8 |
|
|
74 | #else |
|
|
75 | #define ECB_PTRSIZE 4 |
|
|
76 | #endif |
|
|
77 | #endif |
|
|
78 | |
|
|
79 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
|
|
80 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
|
|
81 | |
|
|
82 | /* work around x32 idiocy by defining proper macros */ |
|
|
83 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
|
|
84 | #if _ILP32 |
|
|
85 | #define ECB_AMD64_X32 1 |
|
|
86 | #else |
|
|
87 | #define ECB_AMD64 1 |
|
|
88 | #endif |
| 49 | #endif |
89 | #endif |
| 50 | |
90 | |
| 51 | /* many compilers define _GNUC_ to some versions but then only implement |
91 | /* many compilers define _GNUC_ to some versions but then only implement |
| 52 | * what their idiot authors think are the "more important" extensions, |
92 | * what their idiot authors think are the "more important" extensions, |
| 53 | * causing enourmous grief in return for some better fake benchmark numbers. |
93 | * causing enormous grief in return for some better fake benchmark numbers. |
| 54 | * or so. |
94 | * or so. |
| 55 | * we try to detect these and simply assume they are not gcc - if they have |
95 | * we try to detect these and simply assume they are not gcc - if they have |
| 56 | * an issue with that they should have done it right in the first place. |
96 | * an issue with that they should have done it right in the first place. |
| 57 | */ |
97 | */ |
| 58 | #ifndef ECB_GCC_VERSION |
|
|
| 59 | #if defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
98 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
| 60 | #define ECB_GCC_VERSION(major,minor) 0 |
99 | #define ECB_GCC_VERSION(major,minor) 0 |
| 61 | #else |
100 | #else |
| 62 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
101 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
| 63 | #endif |
102 | #endif |
| 64 | #endif |
|
|
| 65 | |
103 | |
|
|
104 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
|
|
105 | |
|
|
106 | #if __clang__ && defined __has_builtin |
|
|
107 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
|
|
108 | #else |
|
|
109 | #define ECB_CLANG_BUILTIN(x) 0 |
|
|
110 | #endif |
|
|
111 | |
|
|
112 | #if __clang__ && defined __has_extension |
|
|
113 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
|
|
114 | #else |
|
|
115 | #define ECB_CLANG_EXTENSION(x) 0 |
|
|
116 | #endif |
|
|
117 | |
|
|
118 | #define ECB_CPP (__cplusplus+0) |
|
|
119 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
120 | |
|
|
121 | #if ECB_CPP |
|
|
122 | #define ECB_C 0 |
|
|
123 | #define ECB_STDC_VERSION 0 |
|
|
124 | #else |
|
|
125 | #define ECB_C 1 |
|
|
126 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
127 | #endif |
|
|
128 | |
| 66 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
129 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
130 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
| 67 | |
131 | |
| 68 | #if __cplusplus |
132 | #if ECB_CPP |
|
|
133 | #define ECB_EXTERN_C extern "C" |
|
|
134 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
135 | #define ECB_EXTERN_C_END } |
|
|
136 | #else |
|
|
137 | #define ECB_EXTERN_C extern |
|
|
138 | #define ECB_EXTERN_C_BEG |
|
|
139 | #define ECB_EXTERN_C_END |
|
|
140 | #endif |
|
|
141 | |
|
|
142 | /*****************************************************************************/ |
|
|
143 | |
|
|
144 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
145 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
146 | |
|
|
147 | #if ECB_NO_THREADS |
|
|
148 | #define ECB_NO_SMP 1 |
|
|
149 | #endif |
|
|
150 | |
|
|
151 | #if ECB_NO_SMP |
|
|
152 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
153 | #endif |
|
|
154 | |
|
|
155 | #ifndef ECB_MEMORY_FENCE |
|
|
156 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
157 | #if __i386 || __i386__ |
|
|
158 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
159 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
160 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
161 | #elif ECB_GCC_AMD64 |
|
|
162 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
163 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
164 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
165 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
166 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
167 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
168 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
|
|
169 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
170 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
171 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
|
|
172 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
173 | #elif __aarch64__ |
|
|
174 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
175 | #elif (__sparc || __sparc__) && !__sparcv8 |
|
|
176 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
177 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
178 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
179 | #elif defined __s390__ || defined __s390x__ |
|
|
180 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
181 | #elif defined __mips__ |
|
|
182 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
183 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
|
|
184 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
185 | #elif defined __alpha__ |
|
|
186 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
187 | #elif defined __hppa__ |
|
|
188 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
189 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
190 | #elif defined __ia64__ |
|
|
191 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
192 | #elif defined __m68k__ |
|
|
193 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
194 | #elif defined __m88k__ |
|
|
195 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
196 | #elif defined __sh__ |
|
|
197 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
198 | #endif |
|
|
199 | #endif |
|
|
200 | #endif |
|
|
201 | |
|
|
202 | #ifndef ECB_MEMORY_FENCE |
|
|
203 | #if ECB_GCC_VERSION(4,7) |
|
|
204 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
205 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
206 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
207 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
208 | |
|
|
209 | #elif ECB_CLANG_EXTENSION(c_atomic) |
|
|
210 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
211 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
212 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
213 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
214 | |
|
|
215 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
216 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
217 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
218 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
219 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
220 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
221 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
222 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
|
|
223 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
224 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
225 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
226 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
227 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
228 | #elif defined _WIN32 |
|
|
229 | #include <WinNT.h> |
|
|
230 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
231 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
232 | #include <mbarrier.h> |
|
|
233 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
234 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
235 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
236 | #elif __xlC__ |
|
|
237 | #define ECB_MEMORY_FENCE __sync () |
|
|
238 | #endif |
|
|
239 | #endif |
|
|
240 | |
|
|
241 | #ifndef ECB_MEMORY_FENCE |
|
|
242 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
243 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
244 | /* not just C11 atomics and atomic accesses */ |
|
|
245 | #include <stdatomic.h> |
|
|
246 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
|
|
247 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
248 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
249 | /* for most usages, or gcc and clang have a bug */ |
|
|
250 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
251 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
252 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
|
253 | /* for all __atomic_thread_fence's except seq_cst */ |
|
|
254 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
255 | #endif |
|
|
256 | #endif |
|
|
257 | |
|
|
258 | #ifndef ECB_MEMORY_FENCE |
|
|
259 | #if !ECB_AVOID_PTHREADS |
|
|
260 | /* |
|
|
261 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
262 | * or failure to find pthread.h, then you should implement |
|
|
263 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
264 | * OR provide pthread.h and link against the posix thread library |
|
|
265 | * of your system. |
|
|
266 | */ |
|
|
267 | #include <pthread.h> |
|
|
268 | #define ECB_NEEDS_PTHREADS 1 |
|
|
269 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
270 | |
|
|
271 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
272 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
273 | #endif |
|
|
274 | #endif |
|
|
275 | |
|
|
276 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
277 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
278 | #endif |
|
|
279 | |
|
|
280 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
281 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
282 | #endif |
|
|
283 | |
|
|
284 | /*****************************************************************************/ |
|
|
285 | |
|
|
286 | #if ECB_CPP |
| 69 | #define ecb_inline static inline |
287 | #define ecb_inline static inline |
| 70 | #elif ECB_GCC_VERSION(2,5) |
288 | #elif ECB_GCC_VERSION(2,5) |
| 71 | #define ecb_inline static __inline__ |
289 | #define ecb_inline static __inline__ |
| 72 | #elif ECB_C99 |
290 | #elif ECB_C99 |
| 73 | #define ecb_inline static inline |
291 | #define ecb_inline static inline |
| … | |
… | |
| 87 | |
305 | |
| 88 | #define ECB_CONCAT_(a, b) a ## b |
306 | #define ECB_CONCAT_(a, b) a ## b |
| 89 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
307 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
| 90 | #define ECB_STRINGIFY_(a) # a |
308 | #define ECB_STRINGIFY_(a) # a |
| 91 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
309 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
310 | #define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr)) |
| 92 | |
311 | |
| 93 | #define ecb_function_ ecb_inline |
312 | #define ecb_function_ ecb_inline |
| 94 | |
313 | |
| 95 | #if ECB_GCC_VERSION(3,1) |
314 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
| 96 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
315 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
|
|
316 | #else |
|
|
317 | #define ecb_attribute(attrlist) |
|
|
318 | #endif |
|
|
319 | |
|
|
320 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
| 97 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
321 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
322 | #else |
|
|
323 | /* possible C11 impl for integral types |
|
|
324 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
325 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
326 | |
|
|
327 | #define ecb_is_constant(expr) 0 |
|
|
328 | #endif |
|
|
329 | |
|
|
330 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
| 98 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
331 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
332 | #else |
|
|
333 | #define ecb_expect(expr,value) (expr) |
|
|
334 | #endif |
|
|
335 | |
|
|
336 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
| 99 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
337 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
| 100 | #else |
338 | #else |
| 101 | #define ecb_attribute(attrlist) |
|
|
| 102 | #define ecb_is_constant(expr) 0 |
|
|
| 103 | #define ecb_expect(expr,value) (expr) |
|
|
| 104 | #define ecb_prefetch(addr,rw,locality) |
339 | #define ecb_prefetch(addr,rw,locality) |
| 105 | #endif |
340 | #endif |
| 106 | |
341 | |
| 107 | /* no emulation for ecb_decltype */ |
342 | /* no emulation for ecb_decltype */ |
| 108 | #if ECB_GCC_VERSION(4,5) |
343 | #if ECB_CPP11 |
|
|
344 | // older implementations might have problems with decltype(x)::type, work around it |
|
|
345 | template<class T> struct ecb_decltype_t { typedef T type; }; |
| 109 | #define ecb_decltype(x) __decltype(x) |
346 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
| 110 | #elif ECB_GCC_VERSION(3,0) |
347 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
| 111 | #define ecb_decltype(x) __typeof(x) |
348 | #define ecb_decltype(x) __typeof__ (x) |
| 112 | #endif |
349 | #endif |
| 113 | |
350 | |
|
|
351 | #if _MSC_VER >= 1300 |
|
|
352 | #define ecb_deprecated __declspec (deprecated) |
|
|
353 | #else |
|
|
354 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
355 | #endif |
|
|
356 | |
|
|
357 | #if __MSC_VER >= 1500 |
|
|
358 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
|
|
359 | #elif ECB_GCC_VERSION(4,5) |
|
|
360 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
|
|
361 | #else |
|
|
362 | #define ecb_deprecated_message(msg) ecb_deprecated |
|
|
363 | #endif |
|
|
364 | |
|
|
365 | #if _MSC_VER >= 1400 |
|
|
366 | #define ecb_noinline __declspec (noinline) |
|
|
367 | #else |
| 114 | #define ecb_noinline ecb_attribute ((__noinline__)) |
368 | #define ecb_noinline ecb_attribute ((__noinline__)) |
| 115 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
369 | #endif |
|
|
370 | |
| 116 | #define ecb_unused ecb_attribute ((__unused__)) |
371 | #define ecb_unused ecb_attribute ((__unused__)) |
| 117 | #define ecb_const ecb_attribute ((__const__)) |
372 | #define ecb_const ecb_attribute ((__const__)) |
| 118 | #define ecb_pure ecb_attribute ((__pure__)) |
373 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
374 | |
|
|
375 | #if ECB_C11 || __IBMC_NORETURN |
|
|
376 | /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */ |
|
|
377 | #define ecb_noreturn _Noreturn |
|
|
378 | #elif ECB_CPP11 |
|
|
379 | #define ecb_noreturn [[noreturn]] |
|
|
380 | #elif _MSC_VER >= 1200 |
|
|
381 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ |
|
|
382 | #define ecb_noreturn __declspec (noreturn) |
|
|
383 | #else |
|
|
384 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
385 | #endif |
| 119 | |
386 | |
| 120 | #if ECB_GCC_VERSION(4,3) |
387 | #if ECB_GCC_VERSION(4,3) |
| 121 | #define ecb_artificial ecb_attribute ((__artificial__)) |
388 | #define ecb_artificial ecb_attribute ((__artificial__)) |
| 122 | #define ecb_hot ecb_attribute ((__hot__)) |
389 | #define ecb_hot ecb_attribute ((__hot__)) |
| 123 | #define ecb_cold ecb_attribute ((__cold__)) |
390 | #define ecb_cold ecb_attribute ((__cold__)) |
| … | |
… | |
| 135 | /* for compatibility to the rest of the world */ |
402 | /* for compatibility to the rest of the world */ |
| 136 | #define ecb_likely(expr) ecb_expect_true (expr) |
403 | #define ecb_likely(expr) ecb_expect_true (expr) |
| 137 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
404 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
| 138 | |
405 | |
| 139 | /* count trailing zero bits and count # of one bits */ |
406 | /* count trailing zero bits and count # of one bits */ |
| 140 | #if ECB_GCC_VERSION(3,4) |
407 | #if ECB_GCC_VERSION(3,4) \ |
|
|
408 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
|
|
409 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
|
|
410 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
|
|
411 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
412 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
413 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
| 141 | #define ecb_ctz32(x) __builtin_ctz (x) |
414 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
415 | #define ecb_ctz64(x) __builtin_ctzll (x) |
| 142 | #define ecb_popcount32(x) __builtin_popcount (x) |
416 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
417 | /* no popcountll */ |
| 143 | #else |
418 | #else |
| 144 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
419 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
| 145 | ecb_function_ int |
420 | ecb_function_ ecb_const int |
| 146 | ecb_ctz32 (uint32_t x) |
421 | ecb_ctz32 (uint32_t x) |
| 147 | { |
422 | { |
| 148 | int r = 0; |
423 | int r = 0; |
| 149 | |
424 | |
| 150 | x &= (uint32_t)-(int32_t)x; /* this isolates the lowest bit */ |
425 | x &= ~x + 1; /* this isolates the lowest bit */ |
| 151 | |
426 | |
|
|
427 | #if ECB_branchless_on_i386 |
|
|
428 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
429 | r += !!(x & 0xcccccccc) << 1; |
|
|
430 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
431 | r += !!(x & 0xff00ff00) << 3; |
|
|
432 | r += !!(x & 0xffff0000) << 4; |
|
|
433 | #else |
| 152 | if (x & 0xaaaaaaaa) r += 1; |
434 | if (x & 0xaaaaaaaa) r += 1; |
| 153 | if (x & 0xcccccccc) r += 2; |
435 | if (x & 0xcccccccc) r += 2; |
| 154 | if (x & 0xf0f0f0f0) r += 4; |
436 | if (x & 0xf0f0f0f0) r += 4; |
| 155 | if (x & 0xff00ff00) r += 8; |
437 | if (x & 0xff00ff00) r += 8; |
| 156 | if (x & 0xffff0000) r += 16; |
438 | if (x & 0xffff0000) r += 16; |
|
|
439 | #endif |
| 157 | |
440 | |
| 158 | return r; |
441 | return r; |
| 159 | } |
442 | } |
| 160 | |
443 | |
|
|
444 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
|
|
445 | ecb_function_ ecb_const int |
|
|
446 | ecb_ctz64 (uint64_t x) |
|
|
447 | { |
|
|
448 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
449 | return ecb_ctz32 (x >> shift) + shift; |
|
|
450 | } |
|
|
451 | |
| 161 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
452 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
| 162 | ecb_function_ int |
453 | ecb_function_ ecb_const int |
| 163 | ecb_popcount32 (uint32_t x) |
454 | ecb_popcount32 (uint32_t x) |
| 164 | { |
455 | { |
| 165 | x -= (x >> 1) & 0x55555555; |
456 | x -= (x >> 1) & 0x55555555; |
| 166 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
457 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
| 167 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
458 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
| 168 | x *= 0x01010101; |
459 | x *= 0x01010101; |
| 169 | |
460 | |
| 170 | return x >> 24; |
461 | return x >> 24; |
| 171 | } |
462 | } |
| 172 | #endif |
|
|
| 173 | |
463 | |
| 174 | #if ECB_GCC_VERSION(4,3) |
464 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
| 175 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
465 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
|
|
466 | { |
|
|
467 | int r = 0; |
|
|
468 | |
|
|
469 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
470 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
471 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
472 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
473 | if (x >> 1) { r += 1; } |
|
|
474 | |
|
|
475 | return r; |
|
|
476 | } |
|
|
477 | |
|
|
478 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
|
|
479 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
|
|
480 | { |
|
|
481 | int r = 0; |
|
|
482 | |
|
|
483 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
484 | |
|
|
485 | return r + ecb_ld32 (x); |
|
|
486 | } |
|
|
487 | #endif |
|
|
488 | |
|
|
489 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
|
|
490 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
491 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
|
|
492 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
493 | |
|
|
494 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
|
|
495 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
|
|
496 | { |
|
|
497 | return ( (x * 0x0802U & 0x22110U) |
|
|
498 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
499 | } |
|
|
500 | |
|
|
501 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
|
|
502 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
|
|
503 | { |
|
|
504 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
505 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
506 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
507 | x = ( x >> 8 ) | ( x << 8); |
|
|
508 | |
|
|
509 | return x; |
|
|
510 | } |
|
|
511 | |
|
|
512 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
|
|
513 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
|
|
514 | { |
|
|
515 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
516 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
517 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
518 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
519 | x = ( x >> 16 ) | ( x << 16); |
|
|
520 | |
|
|
521 | return x; |
|
|
522 | } |
|
|
523 | |
|
|
524 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
525 | /* so for this version we are lazy */ |
|
|
526 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
|
|
527 | ecb_function_ ecb_const int |
|
|
528 | ecb_popcount64 (uint64_t x) |
|
|
529 | { |
|
|
530 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
531 | } |
|
|
532 | |
|
|
533 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
|
|
534 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
|
|
535 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
|
|
536 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
|
|
537 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
|
|
538 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
|
|
539 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
|
|
540 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
|
|
541 | |
|
|
542 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
543 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
544 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
545 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
546 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
547 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
548 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
549 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
550 | |
|
|
551 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
| 176 | #define ecb_bswap16(x) (__builtin_bswap32(x) >> 16) |
552 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
553 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
554 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
| 177 | #else |
555 | #else |
|
|
556 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
|
|
557 | ecb_function_ ecb_const uint16_t |
|
|
558 | ecb_bswap16 (uint16_t x) |
|
|
559 | { |
|
|
560 | return ecb_rotl16 (x, 8); |
|
|
561 | } |
|
|
562 | |
| 178 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
563 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
| 179 | ecb_function_ uint32_t |
564 | ecb_function_ ecb_const uint32_t |
| 180 | ecb_bswap32 (uint32_t x) |
565 | ecb_bswap32 (uint32_t x) |
| 181 | { |
566 | { |
| 182 | return (x >> 24) |
567 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
| 183 | | ((x >> 8) & 0x0000ff00) |
|
|
| 184 | | ((x << 8) & 0x00ff0000) |
|
|
| 185 | | (x << 24); |
|
|
| 186 | } |
568 | } |
| 187 | |
569 | |
| 188 | ecb_function_ uint32_t ecb_bswap16 (uint32_t x) ecb_const; |
570 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
| 189 | ecb_function_ uint32_t |
571 | ecb_function_ ecb_const uint64_t |
| 190 | ecb_bswap16 (uint32_t x) |
572 | ecb_bswap64 (uint64_t x) |
| 191 | { |
573 | { |
| 192 | return ((x >> 8) & 0xff) |
574 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
| 193 | | ((x << 8) & 0x00ff0000) |
|
|
| 194 | | (x << 24); |
|
|
| 195 | } |
575 | } |
| 196 | #endif |
576 | #endif |
| 197 | |
577 | |
| 198 | #if ECB_GCC_VERSION(4,5) |
578 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
| 199 | #define ecb_unreachable() __builtin_unreachable () |
579 | #define ecb_unreachable() __builtin_unreachable () |
| 200 | #else |
580 | #else |
| 201 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
581 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
| 202 | ecb_function_ void ecb_unreachable (void) ecb_noreturn; |
582 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
| 203 | ecb_function_ void ecb_unreachable (void) { } |
583 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
| 204 | #endif |
584 | #endif |
| 205 | |
585 | |
| 206 | /* try to tell the compiler that some condition is definitely true */ |
586 | /* try to tell the compiler that some condition is definitely true */ |
| 207 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
587 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
| 208 | |
588 | |
| 209 | ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; |
589 | ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); |
| 210 | ecb_function_ unsigned char |
590 | ecb_inline ecb_const unsigned char |
| 211 | ecb_byteorder_helper (void) |
591 | ecb_byteorder_helper (void) |
| 212 | { |
592 | { |
| 213 | const uint32_t u = 0x11223344; |
593 | /* the union code still generates code under pressure in gcc, */ |
| 214 | return *(unsigned char *)&u; |
594 | /* but less than using pointers, and always seems to */ |
|
|
595 | /* successfully return a constant. */ |
|
|
596 | /* the reason why we have this horrible preprocessor mess */ |
|
|
597 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
598 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
599 | #if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
|
|
600 | return 0x44; |
|
|
601 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
602 | return 0x44; |
|
|
603 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
604 | return 0x11; |
|
|
605 | #else |
|
|
606 | union |
|
|
607 | { |
|
|
608 | uint32_t i; |
|
|
609 | uint8_t c; |
|
|
610 | } u = { 0x11223344 }; |
|
|
611 | return u.c; |
|
|
612 | #endif |
| 215 | } |
613 | } |
| 216 | |
614 | |
| 217 | ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; |
615 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
| 218 | ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
616 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
| 219 | ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; |
617 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
| 220 | ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
618 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
| 221 | |
619 | |
| 222 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
620 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
| 223 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
621 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
| 224 | #else |
622 | #else |
| 225 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
623 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
624 | #endif |
|
|
625 | |
|
|
626 | #if ECB_CPP |
|
|
627 | template<typename T> |
|
|
628 | static inline T ecb_div_rd (T val, T div) |
|
|
629 | { |
|
|
630 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
631 | } |
|
|
632 | template<typename T> |
|
|
633 | static inline T ecb_div_ru (T val, T div) |
|
|
634 | { |
|
|
635 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
636 | } |
|
|
637 | #else |
|
|
638 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
639 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
| 226 | #endif |
640 | #endif |
| 227 | |
641 | |
| 228 | #if ecb_cplusplus_does_not_suck |
642 | #if ecb_cplusplus_does_not_suck |
| 229 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
643 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
| 230 | template<typename T, int N> |
644 | template<typename T, int N> |
| … | |
… | |
| 234 | } |
648 | } |
| 235 | #else |
649 | #else |
| 236 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
650 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
| 237 | #endif |
651 | #endif |
| 238 | |
652 | |
| 239 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
653 | /*******************************************************************************/ |
| 240 | ecb_inline uint32_t |
654 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
| 241 | ecb_rotr32 (uint32_t x, unsigned int count) |
|
|
| 242 | { |
|
|
| 243 | return (x << (32 - count)) | (x >> count); |
|
|
| 244 | } |
|
|
| 245 | |
655 | |
| 246 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
656 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
| 247 | ecb_inline uint32_t |
657 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
| 248 | ecb_rotl32 (uint32_t x, unsigned int count) |
658 | #if 0 \ |
| 249 | { |
659 | || __i386 || __i386__ \ |
| 250 | return (x >> (32 - count)) | (x << count); |
660 | || ECB_GCC_AMD64 \ |
| 251 | } |
661 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
662 | || defined __s390__ || defined __s390x__ \ |
|
|
663 | || defined __mips__ \ |
|
|
664 | || defined __alpha__ \ |
|
|
665 | || defined __hppa__ \ |
|
|
666 | || defined __ia64__ \ |
|
|
667 | || defined __m68k__ \ |
|
|
668 | || defined __m88k__ \ |
|
|
669 | || defined __sh__ \ |
|
|
670 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
|
|
671 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
672 | || defined __aarch64__ |
|
|
673 | #define ECB_STDFP 1 |
|
|
674 | #include <string.h> /* for memcpy */ |
|
|
675 | #else |
|
|
676 | #define ECB_STDFP 0 |
|
|
677 | #endif |
| 252 | |
678 | |
|
|
679 | #ifndef ECB_NO_LIBM |
|
|
680 | |
|
|
681 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
682 | |
|
|
683 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
684 | #ifdef INFINITY |
|
|
685 | #define ECB_INFINITY INFINITY |
|
|
686 | #else |
|
|
687 | #define ECB_INFINITY HUGE_VAL |
| 253 | #endif |
688 | #endif |
| 254 | |
689 | |
|
|
690 | #ifdef NAN |
|
|
691 | #define ECB_NAN NAN |
|
|
692 | #else |
|
|
693 | #define ECB_NAN ECB_INFINITY |
|
|
694 | #endif |
|
|
695 | |
|
|
696 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
697 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
698 | #else |
|
|
699 | #define ecb_ldexpf(x,e) (float) ldexp ((float) (x), (e)) |
|
|
700 | #endif |
|
|
701 | |
|
|
702 | /* converts an ieee half/binary16 to a float */ |
|
|
703 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
704 | ecb_function_ ecb_const float |
|
|
705 | ecb_binary16_to_float (uint16_t x) |
|
|
706 | { |
|
|
707 | int e = (x >> 10) & 0x1f; |
|
|
708 | int m = x & 0x3ff; |
|
|
709 | float r; |
|
|
710 | |
|
|
711 | if (!e ) r = ecb_ldexpf (m , -24); |
|
|
712 | else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25); |
|
|
713 | else if (m ) r = ECB_NAN; |
|
|
714 | else r = ECB_INFINITY; |
|
|
715 | |
|
|
716 | return x & 0x8000 ? -r : r; |
|
|
717 | } |
|
|
718 | |
|
|
719 | /* convert a float to ieee single/binary32 */ |
|
|
720 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
|
|
721 | ecb_function_ ecb_const uint32_t |
|
|
722 | ecb_float_to_binary32 (float x) |
|
|
723 | { |
|
|
724 | uint32_t r; |
|
|
725 | |
|
|
726 | #if ECB_STDFP |
|
|
727 | memcpy (&r, &x, 4); |
|
|
728 | #else |
|
|
729 | /* slow emulation, works for anything but -0 */ |
|
|
730 | uint32_t m; |
|
|
731 | int e; |
|
|
732 | |
|
|
733 | if (x == 0e0f ) return 0x00000000U; |
|
|
734 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
735 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
736 | if (x != x ) return 0x7fbfffffU; |
|
|
737 | |
|
|
738 | m = frexpf (x, &e) * 0x1000000U; |
|
|
739 | |
|
|
740 | r = m & 0x80000000U; |
|
|
741 | |
|
|
742 | if (r) |
|
|
743 | m = -m; |
|
|
744 | |
|
|
745 | if (e <= -126) |
|
|
746 | { |
|
|
747 | m &= 0xffffffU; |
|
|
748 | m >>= (-125 - e); |
|
|
749 | e = -126; |
|
|
750 | } |
|
|
751 | |
|
|
752 | r |= (e + 126) << 23; |
|
|
753 | r |= m & 0x7fffffU; |
|
|
754 | #endif |
|
|
755 | |
|
|
756 | return r; |
|
|
757 | } |
|
|
758 | |
|
|
759 | /* converts an ieee single/binary32 to a float */ |
|
|
760 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
|
|
761 | ecb_function_ ecb_const float |
|
|
762 | ecb_binary32_to_float (uint32_t x) |
|
|
763 | { |
|
|
764 | float r; |
|
|
765 | |
|
|
766 | #if ECB_STDFP |
|
|
767 | memcpy (&r, &x, 4); |
|
|
768 | #else |
|
|
769 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
770 | int neg = x >> 31; |
|
|
771 | int e = (x >> 23) & 0xffU; |
|
|
772 | |
|
|
773 | x &= 0x7fffffU; |
|
|
774 | |
|
|
775 | if (e) |
|
|
776 | x |= 0x800000U; |
|
|
777 | else |
|
|
778 | e = 1; |
|
|
779 | |
|
|
780 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
781 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
782 | |
|
|
783 | r = neg ? -r : r; |
|
|
784 | #endif |
|
|
785 | |
|
|
786 | return r; |
|
|
787 | } |
|
|
788 | |
|
|
789 | /* convert a double to ieee double/binary64 */ |
|
|
790 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
|
|
791 | ecb_function_ ecb_const uint64_t |
|
|
792 | ecb_double_to_binary64 (double x) |
|
|
793 | { |
|
|
794 | uint64_t r; |
|
|
795 | |
|
|
796 | #if ECB_STDFP |
|
|
797 | memcpy (&r, &x, 8); |
|
|
798 | #else |
|
|
799 | /* slow emulation, works for anything but -0 */ |
|
|
800 | uint64_t m; |
|
|
801 | int e; |
|
|
802 | |
|
|
803 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
804 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
805 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
806 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
807 | |
|
|
808 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
809 | |
|
|
810 | r = m & 0x8000000000000000;; |
|
|
811 | |
|
|
812 | if (r) |
|
|
813 | m = -m; |
|
|
814 | |
|
|
815 | if (e <= -1022) |
|
|
816 | { |
|
|
817 | m &= 0x1fffffffffffffU; |
|
|
818 | m >>= (-1021 - e); |
|
|
819 | e = -1022; |
|
|
820 | } |
|
|
821 | |
|
|
822 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
823 | r |= m & 0xfffffffffffffU; |
|
|
824 | #endif |
|
|
825 | |
|
|
826 | return r; |
|
|
827 | } |
|
|
828 | |
|
|
829 | /* converts an ieee double/binary64 to a double */ |
|
|
830 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
|
|
831 | ecb_function_ ecb_const double |
|
|
832 | ecb_binary64_to_double (uint64_t x) |
|
|
833 | { |
|
|
834 | double r; |
|
|
835 | |
|
|
836 | #if ECB_STDFP |
|
|
837 | memcpy (&r, &x, 8); |
|
|
838 | #else |
|
|
839 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
840 | int neg = x >> 63; |
|
|
841 | int e = (x >> 52) & 0x7ffU; |
|
|
842 | |
|
|
843 | x &= 0xfffffffffffffU; |
|
|
844 | |
|
|
845 | if (e) |
|
|
846 | x |= 0x10000000000000U; |
|
|
847 | else |
|
|
848 | e = 1; |
|
|
849 | |
|
|
850 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
851 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
852 | |
|
|
853 | r = neg ? -r : r; |
|
|
854 | #endif |
|
|
855 | |
|
|
856 | return r; |
|
|
857 | } |
|
|
858 | |
|
|
859 | #endif |
|
|
860 | |
|
|
861 | #endif |
|
|
862 | |
