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Comparing libecb/ecb.h (file contents):
Revision 1.139 by root, Tue Oct 14 14:39:06 2014 UTC vs.
Revision 1.169 by root, Sat Nov 21 20:56:38 2015 UTC

1/* 1/*
2 * libecb - http://software.schmorp.de/pkg/libecb 2 * libecb - http://software.schmorp.de/pkg/libecb
3 * 3 *
4 * Copyright (©) 2009-2014 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:
… …
40 40
41#ifndef ECB_H 41#ifndef ECB_H
42#define ECB_H 42#define ECB_H
43 43
44/* 16 bits major, 16 bits minor */ 44/* 16 bits major, 16 bits minor */
45#define ECB_VERSION 0x00010003 45#define ECB_VERSION 0x00010005
46 46
47#ifdef _WIN32 47#ifdef _WIN32
48 typedef signed char int8_t; 48 typedef signed char int8_t;
49 typedef unsigned char uint8_t; 49 typedef unsigned char uint8_t;
50 typedef signed short int16_t; 50 typedef signed short int16_t;
… …
74 #else 74 #else
75 #define ECB_PTRSIZE 4 75 #define ECB_PTRSIZE 4
76 #endif 76 #endif
77#endif 77#endif
78 78
79#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
80#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
81
79/* work around x32 idiocy by defining proper macros */ 82/* work around x32 idiocy by defining proper macros */
80#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 83#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
81 #if _ILP32 84 #if _ILP32
82 #define ECB_AMD64_X32 1 85 #define ECB_AMD64_X32 1
83 #else 86 #else
84 #define ECB_AMD64 1 87 #define ECB_AMD64 1
85 #endif 88 #endif
… …
98 #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)))
99#endif 102#endif
100 103
101#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) 104#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
102 105
103#if __clang__ && defined(__has_builtin) 106#if __clang__ && defined __has_builtin
104 #define ECB_CLANG_BUILTIN(x) __has_builtin(x) 107 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
105#else 108#else
106 #define ECB_CLANG_BUILTIN(x) 0 109 #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
107#endif 116#endif
108 117
109#define ECB_CPP (__cplusplus+0) 118#define ECB_CPP (__cplusplus+0)
110#define ECB_CPP11 (__cplusplus >= 201103L) 119#define ECB_CPP11 (__cplusplus >= 201103L)
111 120
… …
139 #define ECB_NO_SMP 1 148 #define ECB_NO_SMP 1
140#endif 149#endif
141 150
142#if ECB_NO_SMP 151#if ECB_NO_SMP
143 #define ECB_MEMORY_FENCE do { } while (0) 152 #define ECB_MEMORY_FENCE do { } while (0)
153#endif
154
155/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
156#if __xlC__ && ECB_CPP
157 #include <builtins.h>
144#endif 158#endif
145 159
146#ifndef ECB_MEMORY_FENCE 160#ifndef ECB_MEMORY_FENCE
147 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 161 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
148 #if __i386 || __i386__ 162 #if __i386 || __i386__
149 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 163 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
150 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 164 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
151 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 165 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
152 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 166 #elif ECB_GCC_AMD64
153 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 167 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
154 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 168 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
155 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 169 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
156 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 170 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
157 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 171 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
… …
161 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 175 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
162 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 176 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
163 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 177 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
164 #elif __aarch64__ 178 #elif __aarch64__
165 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 179 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
166 #elif (__sparc || __sparc__) && !__sparcv8 180 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
167 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 181 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
168 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 182 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
169 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 183 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
170 #elif defined __s390__ || defined __s390x__ 184 #elif defined __s390__ || defined __s390x__
171 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 185 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
195 /* see comment below (stdatomic.h) about the C11 memory model. */ 209 /* see comment below (stdatomic.h) about the C11 memory model. */
196 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 210 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
197 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 211 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
198 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 212 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
199 213
200 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 214 #elif ECB_CLANG_EXTENSION(c_atomic)
201 * without risking compile time errors with other compilers. We *could*
202 * define our own ecb_clang_has_feature, but I just can't be bothered to work
203 * around this shit time and again.
204 * #elif defined __clang && __has_feature (cxx_atomic)
205 * // see comment below (stdatomic.h) about the C11 memory model. 215 /* see comment below (stdatomic.h) about the C11 memory model. */
206 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 216 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
207 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 217 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
208 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 218 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
209 */
210 219
211 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 220 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
212 #define ECB_MEMORY_FENCE __sync_synchronize () 221 #define ECB_MEMORY_FENCE __sync_synchronize ()
213 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 222 #elif _MSC_VER >= 1500 /* VC++ 2008 */
214 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 223 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
277 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 286 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
278#endif 287#endif
279 288
280/*****************************************************************************/ 289/*****************************************************************************/
281 290
282#if __cplusplus 291#if ECB_CPP
283 #define ecb_inline static inline 292 #define ecb_inline static inline
284#elif ECB_GCC_VERSION(2,5) 293#elif ECB_GCC_VERSION(2,5)
285 #define ecb_inline static __inline__ 294 #define ecb_inline static __inline__
286#elif ECB_C99 295#elif ECB_C99
287 #define ecb_inline static inline 296 #define ecb_inline static inline
… …
301 310
302#define ECB_CONCAT_(a, b) a ## b 311#define ECB_CONCAT_(a, b) a ## b
303#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 312#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
304#define ECB_STRINGIFY_(a) # a 313#define ECB_STRINGIFY_(a) # a
305#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 314#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
315#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
306 316
307#define ecb_function_ ecb_inline 317#define ecb_function_ ecb_inline
308 318
309#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) 319#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
310 #define ecb_attribute(attrlist) __attribute__(attrlist) 320 #define ecb_attribute(attrlist) __attribute__ (attrlist)
311#else 321#else
312 #define ecb_attribute(attrlist) 322 #define ecb_attribute(attrlist)
313#endif 323#endif
314 324
315#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) 325#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
… …
333#else 343#else
334 #define ecb_prefetch(addr,rw,locality) 344 #define ecb_prefetch(addr,rw,locality)
335#endif 345#endif
336 346
337/* no emulation for ecb_decltype */ 347/* no emulation for ecb_decltype */
338#if ECB_GCC_VERSION(4,5) 348#if ECB_CPP11
349 // older implementations might have problems with decltype(x)::type, work around it
350 template<class T> struct ecb_decltype_t { typedef T type; };
339 #define ecb_decltype(x) __decltype(x) 351 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
340#elif ECB_GCC_VERSION(3,0) 352#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
341 #define ecb_decltype(x) __typeof(x) 353 #define ecb_decltype(x) __typeof__ (x)
342#endif 354#endif
343 355
344#if _MSC_VER >= 1300 356#if _MSC_VER >= 1300
345 #define ecb_deprecated __declspec(deprecated) 357 #define ecb_deprecated __declspec (deprecated)
346#else 358#else
347 #define ecb_deprecated ecb_attribute ((__deprecated__)) 359 #define ecb_deprecated ecb_attribute ((__deprecated__))
348#endif 360#endif
349 361
362#if _MSC_VER >= 1500
363 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
364#elif ECB_GCC_VERSION(4,5)
365 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
366#else
367 #define ecb_deprecated_message(msg) ecb_deprecated
368#endif
369
370#if _MSC_VER >= 1400
371 #define ecb_noinline __declspec (noinline)
372#else
350#define ecb_noinline ecb_attribute ((__noinline__)) 373 #define ecb_noinline ecb_attribute ((__noinline__))
374#endif
375
351#define ecb_unused ecb_attribute ((__unused__)) 376#define ecb_unused ecb_attribute ((__unused__))
352#define ecb_const ecb_attribute ((__const__)) 377#define ecb_const ecb_attribute ((__const__))
353#define ecb_pure ecb_attribute ((__pure__)) 378#define ecb_pure ecb_attribute ((__pure__))
354 379
355/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ 380#if ECB_C11 || __IBMC_NORETURN
356#if ECB_C11 381 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
357 #define ecb_noreturn _Noreturn 382 #define ecb_noreturn _Noreturn
383#elif ECB_CPP11
384 #define ecb_noreturn [[noreturn]]
385#elif _MSC_VER >= 1200
386 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
387 #define ecb_noreturn __declspec (noreturn)
358#else 388#else
359 #define ecb_noreturn ecb_attribute ((__noreturn__)) 389 #define ecb_noreturn ecb_attribute ((__noreturn__))
360#endif 390#endif
361 391
362#if ECB_GCC_VERSION(4,3) 392#if ECB_GCC_VERSION(4,3)
… …
389 #define ecb_ctz32(x) __builtin_ctz (x) 419 #define ecb_ctz32(x) __builtin_ctz (x)
390 #define ecb_ctz64(x) __builtin_ctzll (x) 420 #define ecb_ctz64(x) __builtin_ctzll (x)
391 #define ecb_popcount32(x) __builtin_popcount (x) 421 #define ecb_popcount32(x) __builtin_popcount (x)
392 /* no popcountll */ 422 /* no popcountll */
393#else 423#else
394 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 424 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
395 ecb_function_ int 425 ecb_function_ ecb_const int
396 ecb_ctz32 (uint32_t x) 426 ecb_ctz32 (uint32_t x)
397 { 427 {
398 int r = 0; 428 int r = 0;
399 429
400 x &= ~x + 1; /* this isolates the lowest bit */ 430 x &= ~x + 1; /* this isolates the lowest bit */
… …
414#endif 444#endif
415 445
416 return r; 446 return r;
417 } 447 }
418 448
419 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 449 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
420 ecb_function_ int 450 ecb_function_ ecb_const int
421 ecb_ctz64 (uint64_t x) 451 ecb_ctz64 (uint64_t x)
422 { 452 {
423 int shift = x & 0xffffffffU ? 0 : 32; 453 int shift = x & 0xffffffff ? 0 : 32;
424 return ecb_ctz32 (x >> shift) + shift; 454 return ecb_ctz32 (x >> shift) + shift;
425 } 455 }
426 456
427 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 457 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
428 ecb_function_ int 458 ecb_function_ ecb_const int
429 ecb_popcount32 (uint32_t x) 459 ecb_popcount32 (uint32_t x)
430 { 460 {
431 x -= (x >> 1) & 0x55555555; 461 x -= (x >> 1) & 0x55555555;
432 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 462 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
433 x = ((x >> 4) + x) & 0x0f0f0f0f; 463 x = ((x >> 4) + x) & 0x0f0f0f0f;
434 x *= 0x01010101; 464 x *= 0x01010101;
435 465
436 return x >> 24; 466 return x >> 24;
437 } 467 }
438 468
439 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 469 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
440 ecb_function_ int ecb_ld32 (uint32_t x) 470 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
441 { 471 {
442 int r = 0; 472 int r = 0;
443 473
444 if (x >> 16) { x >>= 16; r += 16; } 474 if (x >> 16) { x >>= 16; r += 16; }
445 if (x >> 8) { x >>= 8; r += 8; } 475 if (x >> 8) { x >>= 8; r += 8; }
… …
448 if (x >> 1) { r += 1; } 478 if (x >> 1) { r += 1; }
449 479
450 return r; 480 return r;
451 } 481 }
452 482
453 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 483 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
454 ecb_function_ int ecb_ld64 (uint64_t x) 484 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
455 { 485 {
456 int r = 0; 486 int r = 0;
457 487
458 if (x >> 32) { x >>= 32; r += 32; } 488 if (x >> 32) { x >>= 32; r += 32; }
459 489
460 return r + ecb_ld32 (x); 490 return r + ecb_ld32 (x);
461 } 491 }
462#endif 492#endif
463 493
464ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 494ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
465ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 495ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
466ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 496ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
467ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 497ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
468 498
469ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 499ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
470ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 500ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
471{ 501{
472 return ( (x * 0x0802U & 0x22110U) 502 return ( (x * 0x0802U & 0x22110U)
473 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 503 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
474} 504}
475 505
476ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 506ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
477ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 507ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
478{ 508{
479 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 509 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
480 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 510 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
481 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 511 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
482 x = ( x >> 8 ) | ( x << 8); 512 x = ( x >> 8 ) | ( x << 8);
483 513
484 return x; 514 return x;
485} 515}
486 516
487ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 517ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
488ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 518ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
489{ 519{
490 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 520 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
491 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 521 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
492 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 522 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
493 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 523 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
496 return x; 526 return x;
497} 527}
498 528
499/* popcount64 is only available on 64 bit cpus as gcc builtin */ 529/* popcount64 is only available on 64 bit cpus as gcc builtin */
500/* so for this version we are lazy */ 530/* so for this version we are lazy */
501ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 531ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
502ecb_function_ int 532ecb_function_ ecb_const int
503ecb_popcount64 (uint64_t x) 533ecb_popcount64 (uint64_t x)
504{ 534{
505 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 535 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
506} 536}
507 537
508ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 538ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
509ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 539ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
510ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 540ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
511ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 541ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
512ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 542ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
513ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 543ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
514ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 544ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
515ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 545ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
516 546
517ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 547ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
518ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 548ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
519ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 549ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
520ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 550ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
521ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 551ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
522ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 552ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
523ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 553ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
524ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 554ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
525 555
526#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) 556#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
557 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
558 #define ecb_bswap16(x) __builtin_bswap16 (x)
559 #else
527 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 560 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
561 #endif
528 #define ecb_bswap32(x) __builtin_bswap32 (x) 562 #define ecb_bswap32(x) __builtin_bswap32 (x)
529 #define ecb_bswap64(x) __builtin_bswap64 (x) 563 #define ecb_bswap64(x) __builtin_bswap64 (x)
564#elif _MSC_VER
565 #include <stdlib.h>
566 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
567 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
568 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
530#else 569#else
531 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 570 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
532 ecb_function_ uint16_t 571 ecb_function_ ecb_const uint16_t
533 ecb_bswap16 (uint16_t x) 572 ecb_bswap16 (uint16_t x)
534 { 573 {
535 return ecb_rotl16 (x, 8); 574 return ecb_rotl16 (x, 8);
536 } 575 }
537 576
538 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 577 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
539 ecb_function_ uint32_t 578 ecb_function_ ecb_const uint32_t
540 ecb_bswap32 (uint32_t x) 579 ecb_bswap32 (uint32_t x)
541 { 580 {
542 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 581 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
543 } 582 }
544 583
545 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 584 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
546 ecb_function_ uint64_t 585 ecb_function_ ecb_const uint64_t
547 ecb_bswap64 (uint64_t x) 586 ecb_bswap64 (uint64_t x)
548 { 587 {
549 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 588 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
550 } 589 }
551#endif 590#endif
552 591
553#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) 592#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
554 #define ecb_unreachable() __builtin_unreachable () 593 #define ecb_unreachable() __builtin_unreachable ()
555#else 594#else
556 /* this seems to work fine, but gcc always emits a warning for it :/ */ 595 /* this seems to work fine, but gcc always emits a warning for it :/ */
557 ecb_inline void ecb_unreachable (void) ecb_noreturn; 596 ecb_inline ecb_noreturn void ecb_unreachable (void);
558 ecb_inline void ecb_unreachable (void) { } 597 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
559#endif 598#endif
560 599
561/* try to tell the compiler that some condition is definitely true */ 600/* try to tell the compiler that some condition is definitely true */
562#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 601#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
563 602
564ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 603ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
565ecb_inline unsigned char 604ecb_inline ecb_const unsigned char
566ecb_byteorder_helper (void) 605ecb_byteorder_helper (void)
567{ 606{
568 /* the union code still generates code under pressure in gcc, */ 607 /* the union code still generates code under pressure in gcc, */
569 /* but less than using pointers, and always seems to */ 608 /* but less than using pointers, and always seems to */
570 /* successfully return a constant. */ 609 /* successfully return a constant. */
571 /* the reason why we have this horrible preprocessor mess */ 610 /* the reason why we have this horrible preprocessor mess */
572 /* is to avoid it in all cases, at least on common architectures */ 611 /* is to avoid it in all cases, at least on common architectures */
573 /* or when using a recent enough gcc version (>= 4.6) */ 612 /* or when using a recent enough gcc version (>= 4.6) */
574#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 613#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
575 return 0x44; 614 return 0x44;
576#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 615#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
577 return 0x44; 616 return 0x44;
578#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 617#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
579 return 0x11; 618 return 0x11;
… …
585 } u = { 0x11223344 }; 624 } u = { 0x11223344 };
586 return u.c; 625 return u.c;
587#endif 626#endif
588} 627}
589 628
590ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 629ecb_inline ecb_const ecb_bool ecb_big_endian (void);
591ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 630ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
592ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 631ecb_inline ecb_const ecb_bool ecb_little_endian (void);
593ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 632ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
594 633
595#if ECB_GCC_VERSION(3,0) || ECB_C99 634#if ECB_GCC_VERSION(3,0) || ECB_C99
596 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 635 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
597#else 636#else
598 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 637 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
599#endif 638#endif
600 639
601#if __cplusplus 640#if ECB_CPP
602 template<typename T> 641 template<typename T>
603 static inline T ecb_div_rd (T val, T div) 642 static inline T ecb_div_rd (T val, T div)
604 { 643 {
605 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 644 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
606 } 645 }
… …
623 } 662 }
624#else 663#else
625 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 664 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
626#endif 665#endif
627 666
667ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint16_t x);
668ecb_function_ ecb_const uint32_t
669ecb_binary16_to_binary32 (uint16_t x)
670{
671 unsigned int s = (x & 0x8000) << (31 - 15);
672 int e = (x >> 10) & 0x001f;
673 unsigned int m = x & 0x03ff;
674
675 if (ecb_expect_false (e == 31))
676 /* infinity or NaN */
677 e = 255 - (127 - 15);
678 else if (ecb_expect_false (!e))
679 {
680 if (ecb_expect_true (!m))
681 /* zero, handled by code below by forcing e to 0 */
682 e = 0 - (127 - 15);
683 else
684 {
685 /* subnormal, renormalise */
686 unsigned int s = 10 - ecb_ld32 (m);
687
688 m = (m << s) & 0x3ff; /* mask implicit bit */
689 e -= s - 1;
690 }
691 }
692
693 /* e and m now are normalised, or zero, (or inf or nan) */
694 e += 127 - 15;
695
696 return s | (e << 23) | (m << (23 - 10));
697}
698
699ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
700ecb_function_ ecb_const uint16_t
701ecb_binary32_to_binary16 (uint32_t x)
702{
703 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
704 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
705 unsigned int m = x & 0x007fffff;
706
707 x &= 0x7fffffff;
708
709 /* if it's within range of binary16 normals, use fast path */
710 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
711 {
712 /* mantissa round-to-even */
713 m += 0x00000fff + ((m >> (23 - 10)) & 1);
714
715 /* handle overflow */
716 if (ecb_expect_false (m >= 0x00800000))
717 {
718 m >>= 1;
719 e += 1;
720 }
721
722 return s | (e << 10) | (m >> (23 - 10));
723 }
724
725 /* handle large numbers and infinity */
726 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
727 return s | 0x7c00;
728
729 /* handle zero, subnormals and small numbers */
730 if (ecb_expect_true (x < 0x38800000))
731 {
732 /* zero */
733 if (ecb_expect_true (!x))
734 return s;
735
736 /* handle subnormals */
737
738 /* too small, will be zero */
739 if (e < (14 - 24)) /* might not be sharp, but is good enough */
740 return s;
741
742 m |= 0x00800000; /* make implicit bit explicit */
743
744 /* very tricky - we need to round to the nearest e (+10) bit value */
745 {
746 unsigned int bits = 14 - e;
747 unsigned int half = (1 << (bits - 1)) - 1;
748 unsigned int even = (m >> bits) & 1;
749
750 /* if this overflows, we will end up with a normalised number */
751 m = (m + half + even) >> bits;
752 }
753
754 return s | m;
755 }
756
757 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
758 m >>= 13;
759
760 return s | 0x7c00 | m | !m;
761}
762
628/*******************************************************************************/ 763/*******************************************************************************/
629/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 764/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
630 765
631/* basically, everything uses "ieee pure-endian" floating point numbers */ 766/* basically, everything uses "ieee pure-endian" floating point numbers */
632/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 767/* the only noteworthy exception is ancient armle, which uses order 43218765 */
633#if 0 \ 768#if 0 \
634 || __i386 || __i386__ \ 769 || __i386 || __i386__ \
635 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 770 || ECB_GCC_AMD64 \
636 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 771 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
637 || defined __s390__ || defined __s390x__ \ 772 || defined __s390__ || defined __s390x__ \
638 || defined __mips__ \ 773 || defined __mips__ \
639 || defined __alpha__ \ 774 || defined __alpha__ \
640 || defined __hppa__ \ 775 || defined __hppa__ \
641 || defined __ia64__ \ 776 || defined __ia64__ \
642 || defined __m68k__ \ 777 || defined __m68k__ \
643 || defined __m88k__ \ 778 || defined __m88k__ \
644 || defined __sh__ \ 779 || defined __sh__ \
645 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 780 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
646 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 781 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
647 || defined __aarch64__ 782 || defined __aarch64__
648 #define ECB_STDFP 1 783 #define ECB_STDFP 1
649 #include <string.h> /* for memcpy */ 784 #include <string.h> /* for memcpy */
650#else 785#else
… …
666 #define ECB_NAN NAN 801 #define ECB_NAN NAN
667 #else 802 #else
668 #define ECB_NAN ECB_INFINITY 803 #define ECB_NAN ECB_INFINITY
669 #endif 804 #endif
670 805
671 /* converts an ieee half/binary16 to a float */ 806 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
672 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 807 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
673 ecb_function_ float 808 #define ecb_frexpf(x,e) frexpf ((x), (e))
674 ecb_binary16_to_float (uint16_t x) 809 #else
675 { 810 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
676 int e = (x >> 10) & 0x1f; 811 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
677 int m = x & 0x3ff; 812 #endif
678 float r;
679
680 if (!e ) r = ldexpf (m , -24);
681 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
682 else if (m ) r = ECB_NAN;
683 else r = ECB_INFINITY;
684
685 return x & 0x8000 ? -r : r;
686 }
687 813
688 /* convert a float to ieee single/binary32 */ 814 /* convert a float to ieee single/binary32 */
689 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 815 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
690 ecb_function_ uint32_t 816 ecb_function_ ecb_const uint32_t
691 ecb_float_to_binary32 (float x) 817 ecb_float_to_binary32 (float x)
692 { 818 {
693 uint32_t r; 819 uint32_t r;
694 820
695 #if ECB_STDFP 821 #if ECB_STDFP
… …
702 if (x == 0e0f ) return 0x00000000U; 828 if (x == 0e0f ) return 0x00000000U;
703 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 829 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
704 if (x < -3.40282346638528860e+38f) return 0xff800000U; 830 if (x < -3.40282346638528860e+38f) return 0xff800000U;
705 if (x != x ) return 0x7fbfffffU; 831 if (x != x ) return 0x7fbfffffU;
706 832
707 m = frexpf (x, &e) * 0x1000000U; 833 m = ecb_frexpf (x, &e) * 0x1000000U;
708 834
709 r = m & 0x80000000U; 835 r = m & 0x80000000U;
710 836
711 if (r) 837 if (r)
712 m = -m; 838 m = -m;
… …
724 850
725 return r; 851 return r;
726 } 852 }
727 853
728 /* converts an ieee single/binary32 to a float */ 854 /* converts an ieee single/binary32 to a float */
729 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 855 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
730 ecb_function_ float 856 ecb_function_ ecb_const float
731 ecb_binary32_to_float (uint32_t x) 857 ecb_binary32_to_float (uint32_t x)
732 { 858 {
733 float r; 859 float r;
734 860
735 #if ECB_STDFP 861 #if ECB_STDFP
… …
745 x |= 0x800000U; 871 x |= 0x800000U;
746 else 872 else
747 e = 1; 873 e = 1;
748 874
749 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 875 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
750 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 876 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
751 877
752 r = neg ? -r : r; 878 r = neg ? -r : r;
753 #endif 879 #endif
754 880
755 return r; 881 return r;
756 } 882 }
757 883
758 /* convert a double to ieee double/binary64 */ 884 /* convert a double to ieee double/binary64 */
759 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 885 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
760 ecb_function_ uint64_t 886 ecb_function_ ecb_const uint64_t
761 ecb_double_to_binary64 (double x) 887 ecb_double_to_binary64 (double x)
762 { 888 {
763 uint64_t r; 889 uint64_t r;
764 890
765 #if ECB_STDFP 891 #if ECB_STDFP
… …
794 920
795 return r; 921 return r;
796 } 922 }
797 923
798 /* converts an ieee double/binary64 to a double */ 924 /* converts an ieee double/binary64 to a double */
799 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 925 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
800 ecb_function_ double 926 ecb_function_ ecb_const double
801 ecb_binary64_to_double (uint64_t x) 927 ecb_binary64_to_double (uint64_t x)
802 { 928 {
803 double r; 929 double r;
804 930
805 #if ECB_STDFP 931 #if ECB_STDFP
… …
823 #endif 949 #endif
824 950
825 return r; 951 return r;
826 } 952 }
827 953
828#endif 954 /* convert a float to ieee half/binary16 */
955 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
956 ecb_function_ ecb_const uint16_t
957 ecb_float_to_binary16 (float x)
958 {
959 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
960 }
829 961
830#endif 962 /* convert an ieee half/binary16 to float */
963 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
964 ecb_function_ ecb_const float
965 ecb_binary16_to_float (uint16_t x)
966 {
967 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
968 }
831 969
970#endif
971
972#endif
973

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