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Comparing libecb/ecb.h (file contents):
Revision 1.169 by root, Sat Nov 21 20:56:38 2015 UTC vs.
Revision 1.179 by root, Sat Dec 28 08:01:05 2019 UTC

… …
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 0x00010005 45#define ECB_VERSION 0x00010007
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;
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67 typedef uint32_t uintptr_t; 67 typedef uint32_t uintptr_t;
68 typedef int32_t intptr_t; 68 typedef int32_t intptr_t;
69 #endif 69 #endif
70#else 70#else
71 #include <inttypes.h> 71 #include <inttypes.h>
72 #if UINTMAX_MAX > 0xffffffffU 72 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
73 #define ECB_PTRSIZE 8 73 #define ECB_PTRSIZE 8
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__) 79#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
80#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) 80#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
81
82#ifndef ECB_OPTIMIZE_SIZE
83 #if __OPTIMIZE_SIZE__
84 #define ECB_OPTIMIZE_SIZE 1
85 #else
86 #define ECB_OPTIMIZE_SIZE 0
87 #endif
88#endif
81 89
82/* work around x32 idiocy by defining proper macros */ 90/* work around x32 idiocy by defining proper macros */
83#if ECB_GCC_AMD64 || ECB_MSVC_AMD64 91#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
84 #if _ILP32 92 #if _ILP32
85 #define ECB_AMD64_X32 1 93 #define ECB_AMD64_X32 1
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115 #define ECB_CLANG_EXTENSION(x) 0 123 #define ECB_CLANG_EXTENSION(x) 0
116#endif 124#endif
117 125
118#define ECB_CPP (__cplusplus+0) 126#define ECB_CPP (__cplusplus+0)
119#define ECB_CPP11 (__cplusplus >= 201103L) 127#define ECB_CPP11 (__cplusplus >= 201103L)
128#define ECB_CPP14 (__cplusplus >= 201402L)
129#define ECB_CPP17 (__cplusplus >= 201703L)
120 130
121#if ECB_CPP 131#if ECB_CPP
122 #define ECB_C 0 132 #define ECB_C 0
123 #define ECB_STDC_VERSION 0 133 #define ECB_STDC_VERSION 0
124#else 134#else
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126 #define ECB_STDC_VERSION __STDC_VERSION__ 136 #define ECB_STDC_VERSION __STDC_VERSION__
127#endif 137#endif
128 138
129#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 139#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
130#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 140#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
141#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
131 142
132#if ECB_CPP 143#if ECB_CPP
133 #define ECB_EXTERN_C extern "C" 144 #define ECB_EXTERN_C extern "C"
134 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 145 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
135 #define ECB_EXTERN_C_END } 146 #define ECB_EXTERN_C_END }
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155/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ 166/* 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 167#if __xlC__ && ECB_CPP
157 #include <builtins.h> 168 #include <builtins.h>
158#endif 169#endif
159 170
171#if 1400 <= _MSC_VER
172 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
173#endif
174
160#ifndef ECB_MEMORY_FENCE 175#ifndef ECB_MEMORY_FENCE
161 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 176 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
177 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
162 #if __i386 || __i386__ 178 #if __i386 || __i386__
163 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 179 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
164 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 180 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
165 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 181 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
166 #elif ECB_GCC_AMD64 182 #elif ECB_GCC_AMD64
167 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 183 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
168 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 184 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
169 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 185 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
170 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 186 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
171 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 187 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
188 #elif defined __ARM_ARCH_2__ \
189 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
190 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
191 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
192 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
193 || defined __ARM_ARCH_5TEJ__
194 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
172 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 195 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
173 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 196 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
197 || defined __ARM_ARCH_6T2__
174 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 198 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
175 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 199 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
176 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 200 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
177 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 201 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
178 #elif __aarch64__ 202 #elif __aarch64__
179 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 203 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
180 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) 204 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
181 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 205 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
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208 #if ECB_GCC_VERSION(4,7) 232 #if ECB_GCC_VERSION(4,7)
209 /* see comment below (stdatomic.h) about the C11 memory model. */ 233 /* see comment below (stdatomic.h) about the C11 memory model. */
210 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 234 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
211 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 235 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
212 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 236 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
237 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
213 238
214 #elif ECB_CLANG_EXTENSION(c_atomic) 239 #elif ECB_CLANG_EXTENSION(c_atomic)
215 /* see comment below (stdatomic.h) about the C11 memory model. */ 240 /* see comment below (stdatomic.h) about the C11 memory model. */
216 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 241 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
217 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 242 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
218 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 243 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
244 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
219 245
220 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 246 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
221 #define ECB_MEMORY_FENCE __sync_synchronize () 247 #define ECB_MEMORY_FENCE __sync_synchronize ()
222 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 248 #elif _MSC_VER >= 1500 /* VC++ 2008 */
223 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 249 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
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233 #elif defined _WIN32 259 #elif defined _WIN32
234 #include <WinNT.h> 260 #include <WinNT.h>
235 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 261 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
236 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 262 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
237 #include <mbarrier.h> 263 #include <mbarrier.h>
238 #define ECB_MEMORY_FENCE __machine_rw_barrier () 264 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
239 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 265 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
240 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 266 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
267 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
241 #elif __xlC__ 268 #elif __xlC__
242 #define ECB_MEMORY_FENCE __sync () 269 #define ECB_MEMORY_FENCE __sync ()
243 #endif 270 #endif
244#endif 271#endif
245 272
246#ifndef ECB_MEMORY_FENCE 273#ifndef ECB_MEMORY_FENCE
247 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 274 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
248 /* we assume that these memory fences work on all variables/all memory accesses, */ 275 /* we assume that these memory fences work on all variables/all memory accesses, */
249 /* not just C11 atomics and atomic accesses */ 276 /* not just C11 atomics and atomic accesses */
250 #include <stdatomic.h> 277 #include <stdatomic.h>
251 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
252 /* any fence other than seq_cst, which isn't very efficient for us. */
253 /* Why that is, we don't know - either the C11 memory model is quite useless */
254 /* for most usages, or gcc and clang have a bug */
255 /* I *currently* lean towards the latter, and inefficiently implement */
256 /* all three of ecb's fences as a seq_cst fence */
257 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
258 /* for all __atomic_thread_fence's except seq_cst */
259 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 278 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
279 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
280 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
260 #endif 281 #endif
261#endif 282#endif
262 283
263#ifndef ECB_MEMORY_FENCE 284#ifndef ECB_MEMORY_FENCE
264 #if !ECB_AVOID_PTHREADS 285 #if !ECB_AVOID_PTHREADS
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284 305
285#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 306#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
286 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 307 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
287#endif 308#endif
288 309
310#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
311 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
312#endif
313
289/*****************************************************************************/ 314/*****************************************************************************/
290 315
291#if ECB_CPP 316#if ECB_CPP
292 #define ecb_inline static inline 317 #define ecb_inline static inline
293#elif ECB_GCC_VERSION(2,5) 318#elif ECB_GCC_VERSION(2,5)
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423#else 448#else
424 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); 449 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
425 ecb_function_ ecb_const int 450 ecb_function_ ecb_const int
426 ecb_ctz32 (uint32_t x) 451 ecb_ctz32 (uint32_t x)
427 { 452 {
453#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
454 unsigned long r;
455 _BitScanForward (&r, x);
456 return (int)r;
457#else
428 int r = 0; 458 int r = 0;
429 459
430 x &= ~x + 1; /* this isolates the lowest bit */ 460 x &= ~x + 1; /* this isolates the lowest bit */
431 461
432#if ECB_branchless_on_i386 462#if ECB_branchless_on_i386
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442 if (x & 0xff00ff00) r += 8; 472 if (x & 0xff00ff00) r += 8;
443 if (x & 0xffff0000) r += 16; 473 if (x & 0xffff0000) r += 16;
444#endif 474#endif
445 475
446 return r; 476 return r;
477#endif
447 } 478 }
448 479
449 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); 480 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
450 ecb_function_ ecb_const int 481 ecb_function_ ecb_const int
451 ecb_ctz64 (uint64_t x) 482 ecb_ctz64 (uint64_t x)
452 { 483 {
484#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
485 unsigned long r;
486 _BitScanForward64 (&r, x);
487 return (int)r;
488#else
453 int shift = x & 0xffffffff ? 0 : 32; 489 int shift = x & 0xffffffff ? 0 : 32;
454 return ecb_ctz32 (x >> shift) + shift; 490 return ecb_ctz32 (x >> shift) + shift;
491#endif
455 } 492 }
456 493
457 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); 494 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
458 ecb_function_ ecb_const int 495 ecb_function_ ecb_const int
459 ecb_popcount32 (uint32_t x) 496 ecb_popcount32 (uint32_t x)
… …
467 } 504 }
468 505
469 ecb_function_ ecb_const int ecb_ld32 (uint32_t x); 506 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
470 ecb_function_ ecb_const int ecb_ld32 (uint32_t x) 507 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
471 { 508 {
509#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
510 unsigned long r;
511 _BitScanReverse (&r, x);
512 return (int)r;
513#else
472 int r = 0; 514 int r = 0;
473 515
474 if (x >> 16) { x >>= 16; r += 16; } 516 if (x >> 16) { x >>= 16; r += 16; }
475 if (x >> 8) { x >>= 8; r += 8; } 517 if (x >> 8) { x >>= 8; r += 8; }
476 if (x >> 4) { x >>= 4; r += 4; } 518 if (x >> 4) { x >>= 4; r += 4; }
477 if (x >> 2) { x >>= 2; r += 2; } 519 if (x >> 2) { x >>= 2; r += 2; }
478 if (x >> 1) { r += 1; } 520 if (x >> 1) { r += 1; }
479 521
480 return r; 522 return r;
523#endif
481 } 524 }
482 525
483 ecb_function_ ecb_const int ecb_ld64 (uint64_t x); 526 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
484 ecb_function_ ecb_const int ecb_ld64 (uint64_t x) 527 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
485 { 528 {
529#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
530 unsigned long r;
531 _BitScanReverse64 (&r, x);
532 return (int)r;
533#else
486 int r = 0; 534 int r = 0;
487 535
488 if (x >> 32) { x >>= 32; r += 32; } 536 if (x >> 32) { x >>= 32; r += 32; }
489 537
490 return r + ecb_ld32 (x); 538 return r + ecb_ld32 (x);
539#endif
491 } 540 }
492#endif 541#endif
493 542
494ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); 543ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
495ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 544ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
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598#endif 647#endif
599 648
600/* try to tell the compiler that some condition is definitely true */ 649/* try to tell the compiler that some condition is definitely true */
601#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 650#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
602 651
603ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); 652ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
604ecb_inline ecb_const unsigned char 653ecb_inline ecb_const uint32_t
605ecb_byteorder_helper (void) 654ecb_byteorder_helper (void)
606{ 655{
607 /* the union code still generates code under pressure in gcc, */ 656 /* the union code still generates code under pressure in gcc, */
608 /* but less than using pointers, and always seems to */ 657 /* but less than using pointers, and always seems to */
609 /* successfully return a constant. */ 658 /* successfully return a constant. */
610 /* the reason why we have this horrible preprocessor mess */ 659 /* the reason why we have this horrible preprocessor mess */
611 /* is to avoid it in all cases, at least on common architectures */ 660 /* is to avoid it in all cases, at least on common architectures */
612 /* or when using a recent enough gcc version (>= 4.6) */ 661 /* or when using a recent enough gcc version (>= 4.6) */
613#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
614 return 0x44;
615#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 662#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
663 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
664 #define ECB_LITTLE_ENDIAN 1
616 return 0x44; 665 return 0x44332211;
617#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 666#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
667 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
668 #define ECB_BIG_ENDIAN 1
618 return 0x11; 669 return 0x11223344;
619#else 670#else
620 union 671 union
621 { 672 {
673 uint8_t c[4];
622 uint32_t i; 674 uint32_t u;
623 uint8_t c;
624 } u = { 0x11223344 }; 675 } u = { 0x11, 0x22, 0x33, 0x44 };
625 return u.c; 676 return u.u;
626#endif 677#endif
627} 678}
628 679
629ecb_inline ecb_const ecb_bool ecb_big_endian (void); 680ecb_inline ecb_const ecb_bool ecb_big_endian (void);
630ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 681ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
631ecb_inline ecb_const ecb_bool ecb_little_endian (void); 682ecb_inline ecb_const ecb_bool ecb_little_endian (void);
632ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 683ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
633 684
634#if ECB_GCC_VERSION(3,0) || ECB_C99 685#if ECB_GCC_VERSION(3,0) || ECB_C99
635 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 686 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
636#else 687#else
637 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 688 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
… …
662 } 713 }
663#else 714#else
664 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 715 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
665#endif 716#endif
666 717
667ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint16_t x); 718ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
668ecb_function_ ecb_const uint32_t 719ecb_function_ ecb_const uint32_t
669ecb_binary16_to_binary32 (uint16_t x) 720ecb_binary16_to_binary32 (uint32_t x)
670{ 721{
671 unsigned int s = (x & 0x8000) << (31 - 15); 722 unsigned int s = (x & 0x8000) << (31 - 15);
672 int e = (x >> 10) & 0x001f; 723 int e = (x >> 10) & 0x001f;
673 unsigned int m = x & 0x03ff; 724 unsigned int m = x & 0x03ff;
674 725

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