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Comparing libecb/ecb.h (file contents):
Revision 1.127 by root, Sun Jan 5 15:54:09 2014 UTC vs.
Revision 1.160 by sf-exg, Thu Mar 19 15:43:51 2015 UTC

1/* 1/*
2 * libecb - http://software.schmorp.de/pkg/libecb 2 * libecb - http://software.schmorp.de/pkg/libecb
3 * 3 *
4 * Copyright (©) 2009-2013 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
32 43
33/* 16 bits major, 16 bits minor */ 44/* 16 bits major, 16 bits minor */
34#define ECB_VERSION 0x00010003 45#define ECB_VERSION 0x00010004
35 46
36#ifdef _WIN32 47#ifdef _WIN32
37 typedef signed char int8_t; 48 typedef signed char int8_t;
38 typedef unsigned char uint8_t; 49 typedef unsigned char uint8_t;
39 typedef signed short int16_t; 50 typedef signed short int16_t;
… …
63 #else 74 #else
64 #define ECB_PTRSIZE 4 75 #define ECB_PTRSIZE 4
65 #endif 76 #endif
66#endif 77#endif
67 78
79#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
80#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
81
68/* work around x32 idiocy by defining proper macros */ 82/* work around x32 idiocy by defining proper macros */
69#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 83#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
70 #if _ILP32 84 #if _ILP32
71 #define ECB_AMD64_X32 1 85 #define ECB_AMD64_X32 1
72 #else 86 #else
73 #define ECB_AMD64 1 87 #define ECB_AMD64 1
74 #endif 88 #endif
… …
79 * causing enormous grief in return for some better fake benchmark numbers. 93 * causing enormous grief in return for some better fake benchmark numbers.
80 * or so. 94 * or so.
81 * 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
82 * 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.
83 */ 97 */
84#ifndef ECB_GCC_VERSION
85 #if !defined __GNUC_MINOR__ || 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__
86 #define ECB_GCC_VERSION(major,minor) 0 99 #define ECB_GCC_VERSION(major,minor) 0
87 #else 100#else
88 #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)))
89 #endif 102#endif
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
90#endif 116#endif
91 117
92#define ECB_CPP (__cplusplus+0) 118#define ECB_CPP (__cplusplus+0)
93#define ECB_CPP11 (__cplusplus >= 201103L) 119#define ECB_CPP11 (__cplusplus >= 201103L)
94 120
… …
130 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 156 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
131 #if __i386 || __i386__ 157 #if __i386 || __i386__
132 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 158 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
133 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 159 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
134 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 160 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
135 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 161 #elif ECB_GCC_AMD64
136 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 162 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
137 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 163 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
138 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 164 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
139 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 165 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
140 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 166 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
… …
142 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 168 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
143 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 169 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
144 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 170 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
145 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 171 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
146 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 172 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
173 #elif __aarch64__
174 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
147 #elif (__sparc || __sparc__) && !__sparcv8 175 #elif (__sparc || __sparc__) && !__sparcv8
148 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 176 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
149 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 177 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
150 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 178 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
151 #elif defined __s390__ || defined __s390x__ 179 #elif defined __s390__ || defined __s390x__
… …
173 201
174#ifndef ECB_MEMORY_FENCE 202#ifndef ECB_MEMORY_FENCE
175 #if ECB_GCC_VERSION(4,7) 203 #if ECB_GCC_VERSION(4,7)
176 /* see comment below (stdatomic.h) about the C11 memory model. */ 204 /* see comment below (stdatomic.h) about the C11 memory model. */
177 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 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)
178 208
179 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 209 #elif ECB_CLANG_EXTENSION(c_atomic)
180 * without risking compile time errors with other compilers. We *could*
181 * define our own ecb_clang_has_feature, but I just can't be bothered to work
182 * around this shit time and again.
183 * #elif defined __clang && __has_feature (cxx_atomic)
184 * // see comment below (stdatomic.h) about the C11 memory model. 210 /* see comment below (stdatomic.h) about the C11 memory model. */
185 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 211 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
186 */ 212 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
213 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
187 214
188 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 215 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
189 #define ECB_MEMORY_FENCE __sync_synchronize () 216 #define ECB_MEMORY_FENCE __sync_synchronize ()
190 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 217 #elif _MSC_VER >= 1500 /* VC++ 2008 */
191 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 218 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
220 /* any fence other than seq_cst, which isn't very efficient for us. */ 247 /* any fence other than seq_cst, which isn't very efficient for us. */
221 /* Why that is, we don't know - either the C11 memory model is quite useless */ 248 /* Why that is, we don't know - either the C11 memory model is quite useless */
222 /* for most usages, or gcc and clang have a bug */ 249 /* for most usages, or gcc and clang have a bug */
223 /* I *currently* lean towards the latter, and inefficiently implement */ 250 /* I *currently* lean towards the latter, and inefficiently implement */
224 /* all three of ecb's fences as a seq_cst fence */ 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 */
225 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 254 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
226 #endif 255 #endif
227#endif 256#endif
228 257
229#ifndef ECB_MEMORY_FENCE 258#ifndef ECB_MEMORY_FENCE
… …
252 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 281 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
253#endif 282#endif
254 283
255/*****************************************************************************/ 284/*****************************************************************************/
256 285
257#if __cplusplus 286#if ECB_CPP
258 #define ecb_inline static inline 287 #define ecb_inline static inline
259#elif ECB_GCC_VERSION(2,5) 288#elif ECB_GCC_VERSION(2,5)
260 #define ecb_inline static __inline__ 289 #define ecb_inline static __inline__
261#elif ECB_C99 290#elif ECB_C99
262 #define ecb_inline static inline 291 #define ecb_inline static inline
… …
276 305
277#define ECB_CONCAT_(a, b) a ## b 306#define ECB_CONCAT_(a, b) a ## b
278#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 307#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
279#define ECB_STRINGIFY_(a) # a 308#define ECB_STRINGIFY_(a) # a
280#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))
281 311
282#define ecb_function_ ecb_inline 312#define ecb_function_ ecb_inline
283 313
284#if ECB_GCC_VERSION(3,1) 314#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
285 #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)
286 #define ecb_is_constant(expr) __builtin_constant_p (expr) 321 #define ecb_is_constant(expr) __builtin_constant_p (expr)
287 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
288 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
289#else 322#else
290 #define ecb_attribute(attrlist)
291
292 /* possible C11 impl for integral types 323 /* possible C11 impl for integral types
293 typedef struct ecb_is_constant_struct ecb_is_constant_struct; 324 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
294 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ 325 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
295 326
296 #define ecb_is_constant(expr) 0 327 #define ecb_is_constant(expr) 0
328#endif
329
330#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
331 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
332#else
297 #define ecb_expect(expr,value) (expr) 333 #define ecb_expect(expr,value) (expr)
334#endif
335
336#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
337 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
338#else
298 #define ecb_prefetch(addr,rw,locality) 339 #define ecb_prefetch(addr,rw,locality)
299#endif 340#endif
300 341
301/* no emulation for ecb_decltype */ 342/* no emulation for ecb_decltype */
302#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; };
303 #define ecb_decltype(x) __decltype(x) 346 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
304#elif ECB_GCC_VERSION(3,0) 347#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
305 #define ecb_decltype(x) __typeof(x) 348 #define ecb_decltype(x) __typeof__ (x)
306#endif 349#endif
307 350
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
308#define ecb_noinline ecb_attribute ((__noinline__)) 368 #define ecb_noinline ecb_attribute ((__noinline__))
369#endif
370
309#define ecb_unused ecb_attribute ((__unused__)) 371#define ecb_unused ecb_attribute ((__unused__))
310#define ecb_const ecb_attribute ((__const__)) 372#define ecb_const ecb_attribute ((__const__))
311#define ecb_pure ecb_attribute ((__pure__)) 373#define ecb_pure ecb_attribute ((__pure__))
312 374
313#if ECB_C11 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 */
314 #define ecb_noreturn _Noreturn 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)
315#else 383#else
316 #define ecb_noreturn ecb_attribute ((__noreturn__)) 384 #define ecb_noreturn ecb_attribute ((__noreturn__))
317#endif 385#endif
318 386
319#if ECB_GCC_VERSION(4,3) 387#if ECB_GCC_VERSION(4,3)
… …
334/* for compatibility to the rest of the world */ 402/* for compatibility to the rest of the world */
335#define ecb_likely(expr) ecb_expect_true (expr) 403#define ecb_likely(expr) ecb_expect_true (expr)
336#define ecb_unlikely(expr) ecb_expect_false (expr) 404#define ecb_unlikely(expr) ecb_expect_false (expr)
337 405
338/* count trailing zero bits and count # of one bits */ 406/* count trailing zero bits and count # of one bits */
339#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))
340 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 411 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
341 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 412 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
342 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 413 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
343 #define ecb_ctz32(x) __builtin_ctz (x) 414 #define ecb_ctz32(x) __builtin_ctz (x)
344 #define ecb_ctz64(x) __builtin_ctzll (x) 415 #define ecb_ctz64(x) __builtin_ctzll (x)
345 #define ecb_popcount32(x) __builtin_popcount (x) 416 #define ecb_popcount32(x) __builtin_popcount (x)
346 /* no popcountll */ 417 /* no popcountll */
347#else 418#else
348 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 419 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
349 ecb_function_ int 420 ecb_function_ ecb_const int
350 ecb_ctz32 (uint32_t x) 421 ecb_ctz32 (uint32_t x)
351 { 422 {
352 int r = 0; 423 int r = 0;
353 424
354 x &= ~x + 1; /* this isolates the lowest bit */ 425 x &= ~x + 1; /* this isolates the lowest bit */
… …
368#endif 439#endif
369 440
370 return r; 441 return r;
371 } 442 }
372 443
373 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 444 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
374 ecb_function_ int 445 ecb_function_ ecb_const int
375 ecb_ctz64 (uint64_t x) 446 ecb_ctz64 (uint64_t x)
376 { 447 {
377 int shift = x & 0xffffffffU ? 0 : 32; 448 int shift = x & 0xffffffffU ? 0 : 32;
378 return ecb_ctz32 (x >> shift) + shift; 449 return ecb_ctz32 (x >> shift) + shift;
379 } 450 }
380 451
381 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 452 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
382 ecb_function_ int 453 ecb_function_ ecb_const int
383 ecb_popcount32 (uint32_t x) 454 ecb_popcount32 (uint32_t x)
384 { 455 {
385 x -= (x >> 1) & 0x55555555; 456 x -= (x >> 1) & 0x55555555;
386 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 457 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
387 x = ((x >> 4) + x) & 0x0f0f0f0f; 458 x = ((x >> 4) + x) & 0x0f0f0f0f;
388 x *= 0x01010101; 459 x *= 0x01010101;
389 460
390 return x >> 24; 461 return x >> 24;
391 } 462 }
392 463
393 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 464 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
394 ecb_function_ int ecb_ld32 (uint32_t x) 465 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
395 { 466 {
396 int r = 0; 467 int r = 0;
397 468
398 if (x >> 16) { x >>= 16; r += 16; } 469 if (x >> 16) { x >>= 16; r += 16; }
399 if (x >> 8) { x >>= 8; r += 8; } 470 if (x >> 8) { x >>= 8; r += 8; }
… …
402 if (x >> 1) { r += 1; } 473 if (x >> 1) { r += 1; }
403 474
404 return r; 475 return r;
405 } 476 }
406 477
407 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 478 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
408 ecb_function_ int ecb_ld64 (uint64_t x) 479 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
409 { 480 {
410 int r = 0; 481 int r = 0;
411 482
412 if (x >> 32) { x >>= 32; r += 32; } 483 if (x >> 32) { x >>= 32; r += 32; }
413 484
414 return r + ecb_ld32 (x); 485 return r + ecb_ld32 (x);
415 } 486 }
416#endif 487#endif
417 488
418ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 489ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
419ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 490ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
420ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 491ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
421ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 492ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
422 493
423ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 494ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
424ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 495ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
425{ 496{
426 return ( (x * 0x0802U & 0x22110U) 497 return ( (x * 0x0802U & 0x22110U)
427 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 498 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
428} 499}
429 500
430ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 501ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
431ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 502ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
432{ 503{
433 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 504 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
434 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 505 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
435 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 506 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
436 x = ( x >> 8 ) | ( x << 8); 507 x = ( x >> 8 ) | ( x << 8);
437 508
438 return x; 509 return x;
439} 510}
440 511
441ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 512ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
442ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 513ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
443{ 514{
444 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 515 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
445 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 516 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
446 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 517 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
447 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 518 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
450 return x; 521 return x;
451} 522}
452 523
453/* popcount64 is only available on 64 bit cpus as gcc builtin */ 524/* popcount64 is only available on 64 bit cpus as gcc builtin */
454/* so for this version we are lazy */ 525/* so for this version we are lazy */
455ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 526ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
456ecb_function_ int 527ecb_function_ ecb_const int
457ecb_popcount64 (uint64_t x) 528ecb_popcount64 (uint64_t x)
458{ 529{
459 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 530 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
460} 531}
461 532
462ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 533ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
463ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 534ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
464ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 535ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
465ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 536ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
466ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 537ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
467ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 538ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
468ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 539ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
469ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 540ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
470 541
471ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 542ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
472ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 543ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
473ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 544ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
474ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 545ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
475ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 546ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
476ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 547ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
477ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 548ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
478ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 549ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
479 550
480#if ECB_GCC_VERSION(4,3) 551#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
481 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 552 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
482 #define ecb_bswap32(x) __builtin_bswap32 (x) 553 #define ecb_bswap32(x) __builtin_bswap32 (x)
483 #define ecb_bswap64(x) __builtin_bswap64 (x) 554 #define ecb_bswap64(x) __builtin_bswap64 (x)
484#else 555#else
485 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 556 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
486 ecb_function_ uint16_t 557 ecb_function_ ecb_const uint16_t
487 ecb_bswap16 (uint16_t x) 558 ecb_bswap16 (uint16_t x)
488 { 559 {
489 return ecb_rotl16 (x, 8); 560 return ecb_rotl16 (x, 8);
490 } 561 }
491 562
492 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 563 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
493 ecb_function_ uint32_t 564 ecb_function_ ecb_const uint32_t
494 ecb_bswap32 (uint32_t x) 565 ecb_bswap32 (uint32_t x)
495 { 566 {
496 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 567 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
497 } 568 }
498 569
499 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 570 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
500 ecb_function_ uint64_t 571 ecb_function_ ecb_const uint64_t
501 ecb_bswap64 (uint64_t x) 572 ecb_bswap64 (uint64_t x)
502 { 573 {
503 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 574 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
504 } 575 }
505#endif 576#endif
506 577
507#if ECB_GCC_VERSION(4,5) 578#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
508 #define ecb_unreachable() __builtin_unreachable () 579 #define ecb_unreachable() __builtin_unreachable ()
509#else 580#else
510 /* 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 :/ */
511 ecb_inline void ecb_unreachable (void) ecb_noreturn; 582 ecb_inline ecb_noreturn void ecb_unreachable (void);
512 ecb_inline void ecb_unreachable (void) { } 583 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
513#endif 584#endif
514 585
515/* try to tell the compiler that some condition is definitely true */ 586/* try to tell the compiler that some condition is definitely true */
516#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 587#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
517 588
518ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 589ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
519ecb_inline unsigned char 590ecb_inline ecb_const unsigned char
520ecb_byteorder_helper (void) 591ecb_byteorder_helper (void)
521{ 592{
522 /* the union code still generates code under pressure in gcc, */ 593 /* the union code still generates code under pressure in gcc, */
523 /* but less than using pointers, and always seems to */ 594 /* but less than using pointers, and always seems to */
524 /* successfully return a constant. */ 595 /* successfully return a constant. */
525 /* the reason why we have this horrible preprocessor mess */ 596 /* the reason why we have this horrible preprocessor mess */
526 /* is to avoid it in all cases, at least on common architectures */ 597 /* is to avoid it in all cases, at least on common architectures */
527 /* or when using a recent enough gcc version (>= 4.6) */ 598 /* or when using a recent enough gcc version (>= 4.6) */
528#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 599#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
529 return 0x44; 600 return 0x44;
530#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 601#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
531 return 0x44; 602 return 0x44;
532#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 603#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
533 return 0x11; 604 return 0x11;
… …
539 } u = { 0x11223344 }; 610 } u = { 0x11223344 };
540 return u.c; 611 return u.c;
541#endif 612#endif
542} 613}
543 614
544ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 615ecb_inline ecb_const ecb_bool ecb_big_endian (void);
545ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 616ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
546ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 617ecb_inline ecb_const ecb_bool ecb_little_endian (void);
547ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 618ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
548 619
549#if ECB_GCC_VERSION(3,0) || ECB_C99 620#if ECB_GCC_VERSION(3,0) || ECB_C99
550 #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))
551#else 622#else
552 #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)))
553#endif 624#endif
554 625
555#if __cplusplus 626#if ECB_CPP
556 template<typename T> 627 template<typename T>
557 static inline T ecb_div_rd (T val, T div) 628 static inline T ecb_div_rd (T val, T div)
558 { 629 {
559 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 630 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
560 } 631 }
… …
584 655
585/* basically, everything uses "ieee pure-endian" floating point numbers */ 656/* basically, everything uses "ieee pure-endian" floating point numbers */
586/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 657/* the only noteworthy exception is ancient armle, which uses order 43218765 */
587#if 0 \ 658#if 0 \
588 || __i386 || __i386__ \ 659 || __i386 || __i386__ \
589 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 660 || ECB_GCC_AMD64 \
590 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 661 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
591 || defined __arm__ && defined __ARM_EABI__ \
592 || defined __s390__ || defined __s390x__ \ 662 || defined __s390__ || defined __s390x__ \
593 || defined __mips__ \ 663 || defined __mips__ \
594 || defined __alpha__ \ 664 || defined __alpha__ \
595 || defined __hppa__ \ 665 || defined __hppa__ \
596 || defined __ia64__ \ 666 || defined __ia64__ \
597 || defined __m68k__ \ 667 || defined __m68k__ \
598 || defined __m88k__ \ 668 || defined __m88k__ \
599 || defined __sh__ \ 669 || defined __sh__ \
600 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 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__
601 #define ECB_STDFP 1 673 #define ECB_STDFP 1
602 #include <string.h> /* for memcpy */ 674 #include <string.h> /* for memcpy */
603#else 675#else
604 #define ECB_STDFP 0 676 #define ECB_STDFP 0
605#endif 677#endif
… …
619 #define ECB_NAN NAN 691 #define ECB_NAN NAN
620 #else 692 #else
621 #define ECB_NAN ECB_INFINITY 693 #define ECB_NAN ECB_INFINITY
622 #endif 694 #endif
623 695
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
624 /* converts an ieee half/binary16 to a float */ 702 /* converts an ieee half/binary16 to a float */
625 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 703 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
626 ecb_function_ float 704 ecb_function_ ecb_const float
627 ecb_binary16_to_float (uint16_t x) 705 ecb_binary16_to_float (uint16_t x)
628 { 706 {
629 int e = (x >> 10) & 0x1f; 707 int e = (x >> 10) & 0x1f;
630 int m = x & 0x3ff; 708 int m = x & 0x3ff;
631 float r; 709 float r;
632 710
633 if (!e ) r = ldexpf (m , -24); 711 if (!e ) r = ecb_ldexpf (m , -24);
634 else if (e != 31) r = ldexpf (m + 0x400, e - 25); 712 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
635 else if (m ) r = ECB_NAN; 713 else if (m ) r = ECB_NAN;
636 else r = ECB_INFINITY; 714 else r = ECB_INFINITY;
637 715
638 return x & 0x8000 ? -r : r; 716 return x & 0x8000 ? -r : r;
639 } 717 }
640 718
641 /* convert a float to ieee single/binary32 */ 719 /* convert a float to ieee single/binary32 */
642 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 720 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
643 ecb_function_ uint32_t 721 ecb_function_ ecb_const uint32_t
644 ecb_float_to_binary32 (float x) 722 ecb_float_to_binary32 (float x)
645 { 723 {
646 uint32_t r; 724 uint32_t r;
647 725
648 #if ECB_STDFP 726 #if ECB_STDFP
… …
677 755
678 return r; 756 return r;
679 } 757 }
680 758
681 /* converts an ieee single/binary32 to a float */ 759 /* converts an ieee single/binary32 to a float */
682 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 760 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
683 ecb_function_ float 761 ecb_function_ ecb_const float
684 ecb_binary32_to_float (uint32_t x) 762 ecb_binary32_to_float (uint32_t x)
685 { 763 {
686 float r; 764 float r;
687 765
688 #if ECB_STDFP 766 #if ECB_STDFP
… …
698 x |= 0x800000U; 776 x |= 0x800000U;
699 else 777 else
700 e = 1; 778 e = 1;
701 779
702 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 780 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
703 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 781 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
704 782
705 r = neg ? -r : r; 783 r = neg ? -r : r;
706 #endif 784 #endif
707 785
708 return r; 786 return r;
709 } 787 }
710 788
711 /* convert a double to ieee double/binary64 */ 789 /* convert a double to ieee double/binary64 */
712 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 790 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
713 ecb_function_ uint64_t 791 ecb_function_ ecb_const uint64_t
714 ecb_double_to_binary64 (double x) 792 ecb_double_to_binary64 (double x)
715 { 793 {
716 uint64_t r; 794 uint64_t r;
717 795
718 #if ECB_STDFP 796 #if ECB_STDFP
… …
747 825
748 return r; 826 return r;
749 } 827 }
750 828
751 /* converts an ieee double/binary64 to a double */ 829 /* converts an ieee double/binary64 to a double */
752 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 830 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
753 ecb_function_ double 831 ecb_function_ ecb_const double
754 ecb_binary64_to_double (uint64_t x) 832 ecb_binary64_to_double (uint64_t x)
755 { 833 {
756 double r; 834 double r;
757 835
758 #if ECB_STDFP 836 #if ECB_STDFP

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