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Comparing libeio/ecb.h (file contents):
Revision 1.21 by root, Fri May 16 15:15:23 2014 UTC vs.
Revision 1.31 by root, Thu Sep 3 17:20:45 2020 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 (©) 2009-2015,2018-2020 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 0x00010008
46 46
47#ifdef _WIN32 47#include <string.h> /* for memcpy */
48
49#if defined (_WIN32) && !defined (__MINGW32__)
48 typedef signed char int8_t; 50 typedef signed char int8_t;
49 typedef unsigned char uint8_t; 51 typedef unsigned char uint8_t;
52 typedef signed char int_fast8_t;
53 typedef unsigned char uint_fast8_t;
50 typedef signed short int16_t; 54 typedef signed short int16_t;
51 typedef unsigned short uint16_t; 55 typedef unsigned short uint16_t;
56 typedef signed int int_fast16_t;
57 typedef unsigned int uint_fast16_t;
52 typedef signed int int32_t; 58 typedef signed int int32_t;
53 typedef unsigned int uint32_t; 59 typedef unsigned int uint32_t;
60 typedef signed int int_fast32_t;
61 typedef unsigned int uint_fast32_t;
54 #if __GNUC__ 62 #if __GNUC__
55 typedef signed long long int64_t; 63 typedef signed long long int64_t;
56 typedef unsigned long long uint64_t; 64 typedef unsigned long long uint64_t;
57 #else /* _MSC_VER || __BORLANDC__ */ 65 #else /* _MSC_VER || __BORLANDC__ */
58 typedef signed __int64 int64_t; 66 typedef signed __int64 int64_t;
59 typedef unsigned __int64 uint64_t; 67 typedef unsigned __int64 uint64_t;
60 #endif 68 #endif
69 typedef int64_t int_fast64_t;
70 typedef uint64_t uint_fast64_t;
61 #ifdef _WIN64 71 #ifdef _WIN64
62 #define ECB_PTRSIZE 8 72 #define ECB_PTRSIZE 8
63 typedef uint64_t uintptr_t; 73 typedef uint64_t uintptr_t;
64 typedef int64_t intptr_t; 74 typedef int64_t intptr_t;
65 #else 75 #else
… …
67 typedef uint32_t uintptr_t; 77 typedef uint32_t uintptr_t;
68 typedef int32_t intptr_t; 78 typedef int32_t intptr_t;
69 #endif 79 #endif
70#else 80#else
71 #include <inttypes.h> 81 #include <inttypes.h>
72 #if UINTMAX_MAX > 0xffffffffU 82 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
73 #define ECB_PTRSIZE 8 83 #define ECB_PTRSIZE 8
74 #else 84 #else
75 #define ECB_PTRSIZE 4 85 #define ECB_PTRSIZE 4
76 #endif 86 #endif
77#endif 87#endif
78 88
89#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
90#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
91
92#ifndef ECB_OPTIMIZE_SIZE
93 #if __OPTIMIZE_SIZE__
94 #define ECB_OPTIMIZE_SIZE 1
95 #else
96 #define ECB_OPTIMIZE_SIZE 0
97 #endif
98#endif
99
79/* work around x32 idiocy by defining proper macros */ 100/* work around x32 idiocy by defining proper macros */
80#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 101#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
81 #if _ILP32 102 #if _ILP32
82 #define ECB_AMD64_X32 1 103 #define ECB_AMD64_X32 1
83 #else 104 #else
84 #define ECB_AMD64 1 105 #define ECB_AMD64 1
85 #endif 106 #endif
… …
90 * causing enormous grief in return for some better fake benchmark numbers. 111 * causing enormous grief in return for some better fake benchmark numbers.
91 * or so. 112 * or so.
92 * we try to detect these and simply assume they are not gcc - if they have 113 * we try to detect these and simply assume they are not gcc - if they have
93 * an issue with that they should have done it right in the first place. 114 * an issue with that they should have done it right in the first place.
94 */ 115 */
95#ifndef ECB_GCC_VERSION
96 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 116#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
97 #define ECB_GCC_VERSION(major,minor) 0 117 #define ECB_GCC_VERSION(major,minor) 0
98 #else 118#else
99 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 119 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
100 #endif 120#endif
121
122#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
123
124#if __clang__ && defined __has_builtin
125 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
126#else
127 #define ECB_CLANG_BUILTIN(x) 0
128#endif
129
130#if __clang__ && defined __has_extension
131 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
132#else
133 #define ECB_CLANG_EXTENSION(x) 0
101#endif 134#endif
102 135
103#define ECB_CPP (__cplusplus+0) 136#define ECB_CPP (__cplusplus+0)
104#define ECB_CPP11 (__cplusplus >= 201103L) 137#define ECB_CPP11 (__cplusplus >= 201103L)
138#define ECB_CPP14 (__cplusplus >= 201402L)
139#define ECB_CPP17 (__cplusplus >= 201703L)
105 140
106#if ECB_CPP 141#if ECB_CPP
107 #define ECB_C 0 142 #define ECB_C 0
108 #define ECB_STDC_VERSION 0 143 #define ECB_STDC_VERSION 0
109#else 144#else
… …
111 #define ECB_STDC_VERSION __STDC_VERSION__ 146 #define ECB_STDC_VERSION __STDC_VERSION__
112#endif 147#endif
113 148
114#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 149#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
115#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 150#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
151#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
116 152
117#if ECB_CPP 153#if ECB_CPP
118 #define ECB_EXTERN_C extern "C" 154 #define ECB_EXTERN_C extern "C"
119 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 155 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
120 #define ECB_EXTERN_C_END } 156 #define ECB_EXTERN_C_END }
… …
135 171
136#if ECB_NO_SMP 172#if ECB_NO_SMP
137 #define ECB_MEMORY_FENCE do { } while (0) 173 #define ECB_MEMORY_FENCE do { } while (0)
138#endif 174#endif
139 175
176/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
177#if __xlC__ && ECB_CPP
178 #include <builtins.h>
179#endif
180
181#if 1400 <= _MSC_VER
182 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
183#endif
184
140#ifndef ECB_MEMORY_FENCE 185#ifndef ECB_MEMORY_FENCE
141 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 186 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
187 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
142 #if __i386 || __i386__ 188 #if __i386 || __i386__
143 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 189 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
144 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 190 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
145 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 191 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
146 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 192 #elif ECB_GCC_AMD64
147 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 193 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
148 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 194 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
149 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 195 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
150 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 196 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
151 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 197 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
198 #elif defined __ARM_ARCH_2__ \
199 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
200 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
201 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
202 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
203 || defined __ARM_ARCH_5TEJ__
204 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
152 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 205 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
153 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 206 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
207 || defined __ARM_ARCH_6T2__
154 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 208 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
155 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 209 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
156 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 210 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
157 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 211 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
158 #elif __aarch64__ 212 #elif __aarch64__
159 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 213 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
160 #elif (__sparc || __sparc__) && !__sparcv8 214 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
161 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 215 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
162 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 216 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
163 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 217 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
164 #elif defined __s390__ || defined __s390x__ 218 #elif defined __s390__ || defined __s390x__
165 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 219 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
188 #if ECB_GCC_VERSION(4,7) 242 #if ECB_GCC_VERSION(4,7)
189 /* see comment below (stdatomic.h) about the C11 memory model. */ 243 /* see comment below (stdatomic.h) about the C11 memory model. */
190 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 244 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
191 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 245 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
192 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 246 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
247 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
193 248
194 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 249 #elif ECB_CLANG_EXTENSION(c_atomic)
195 * without risking compile time errors with other compilers. We *could*
196 * define our own ecb_clang_has_feature, but I just can't be bothered to work
197 * around this shit time and again.
198 * #elif defined __clang && __has_feature (cxx_atomic)
199 * // see comment below (stdatomic.h) about the C11 memory model. 250 /* see comment below (stdatomic.h) about the C11 memory model. */
200 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 251 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
201 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 252 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
202 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 253 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
203 */ 254 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
204 255
205 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 256 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
206 #define ECB_MEMORY_FENCE __sync_synchronize () 257 #define ECB_MEMORY_FENCE __sync_synchronize ()
207 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 258 #elif _MSC_VER >= 1500 /* VC++ 2008 */
208 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 259 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
218 #elif defined _WIN32 269 #elif defined _WIN32
219 #include <WinNT.h> 270 #include <WinNT.h>
220 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 271 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
221 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 272 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
222 #include <mbarrier.h> 273 #include <mbarrier.h>
223 #define ECB_MEMORY_FENCE __machine_rw_barrier () 274 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
224 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 275 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
225 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 276 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
277 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
226 #elif __xlC__ 278 #elif __xlC__
227 #define ECB_MEMORY_FENCE __sync () 279 #define ECB_MEMORY_FENCE __sync ()
228 #endif 280 #endif
229#endif 281#endif
230 282
231#ifndef ECB_MEMORY_FENCE 283#ifndef ECB_MEMORY_FENCE
232 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 284 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
233 /* we assume that these memory fences work on all variables/all memory accesses, */ 285 /* we assume that these memory fences work on all variables/all memory accesses, */
234 /* not just C11 atomics and atomic accesses */ 286 /* not just C11 atomics and atomic accesses */
235 #include <stdatomic.h> 287 #include <stdatomic.h>
236 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
237 /* any fence other than seq_cst, which isn't very efficient for us. */
238 /* Why that is, we don't know - either the C11 memory model is quite useless */
239 /* for most usages, or gcc and clang have a bug */
240 /* I *currently* lean towards the latter, and inefficiently implement */
241 /* all three of ecb's fences as a seq_cst fence */
242 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
243 /* for all __atomic_thread_fence's except seq_cst */
244 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 288 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
289 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
290 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
245 #endif 291 #endif
246#endif 292#endif
247 293
248#ifndef ECB_MEMORY_FENCE 294#ifndef ECB_MEMORY_FENCE
249 #if !ECB_AVOID_PTHREADS 295 #if !ECB_AVOID_PTHREADS
… …
269 315
270#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 316#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
271 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 317 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
272#endif 318#endif
273 319
320#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
321 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
322#endif
323
274/*****************************************************************************/ 324/*****************************************************************************/
275 325
276#if __cplusplus 326#if ECB_CPP
277 #define ecb_inline static inline 327 #define ecb_inline static inline
278#elif ECB_GCC_VERSION(2,5) 328#elif ECB_GCC_VERSION(2,5)
279 #define ecb_inline static __inline__ 329 #define ecb_inline static __inline__
280#elif ECB_C99 330#elif ECB_C99
281 #define ecb_inline static inline 331 #define ecb_inline static inline
… …
295 345
296#define ECB_CONCAT_(a, b) a ## b 346#define ECB_CONCAT_(a, b) a ## b
297#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 347#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
298#define ECB_STRINGIFY_(a) # a 348#define ECB_STRINGIFY_(a) # a
299#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 349#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
350#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
300 351
301#define ecb_function_ ecb_inline 352#define ecb_function_ ecb_inline
302 353
303#if ECB_GCC_VERSION(3,1) 354#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
304 #define ecb_attribute(attrlist) __attribute__(attrlist) 355 #define ecb_attribute(attrlist) __attribute__ (attrlist)
356#else
357 #define ecb_attribute(attrlist)
358#endif
359
360#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
305 #define ecb_is_constant(expr) __builtin_constant_p (expr) 361 #define ecb_is_constant(expr) __builtin_constant_p (expr)
306 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
307 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
308#else 362#else
309 #define ecb_attribute(attrlist)
310
311 /* possible C11 impl for integral types 363 /* possible C11 impl for integral types
312 typedef struct ecb_is_constant_struct ecb_is_constant_struct; 364 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
313 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ 365 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
314 366
315 #define ecb_is_constant(expr) 0 367 #define ecb_is_constant(expr) 0
368#endif
369
370#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
371 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
372#else
316 #define ecb_expect(expr,value) (expr) 373 #define ecb_expect(expr,value) (expr)
374#endif
375
376#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
377 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
378#else
317 #define ecb_prefetch(addr,rw,locality) 379 #define ecb_prefetch(addr,rw,locality)
318#endif 380#endif
319 381
320/* no emulation for ecb_decltype */ 382/* no emulation for ecb_decltype */
321#if ECB_GCC_VERSION(4,5) 383#if ECB_CPP11
384 // older implementations might have problems with decltype(x)::type, work around it
385 template<class T> struct ecb_decltype_t { typedef T type; };
322 #define ecb_decltype(x) __decltype(x) 386 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
323#elif ECB_GCC_VERSION(3,0) 387#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
324 #define ecb_decltype(x) __typeof(x) 388 #define ecb_decltype(x) __typeof__ (x)
325#endif 389#endif
326 390
391#if _MSC_VER >= 1300
392 #define ecb_deprecated __declspec (deprecated)
393#else
394 #define ecb_deprecated ecb_attribute ((__deprecated__))
395#endif
396
397#if _MSC_VER >= 1500
398 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
399#elif ECB_GCC_VERSION(4,5)
400 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
401#else
402 #define ecb_deprecated_message(msg) ecb_deprecated
403#endif
404
405#if _MSC_VER >= 1400
406 #define ecb_noinline __declspec (noinline)
407#else
327#define ecb_noinline ecb_attribute ((__noinline__)) 408 #define ecb_noinline ecb_attribute ((__noinline__))
409#endif
410
328#define ecb_unused ecb_attribute ((__unused__)) 411#define ecb_unused ecb_attribute ((__unused__))
329#define ecb_const ecb_attribute ((__const__)) 412#define ecb_const ecb_attribute ((__const__))
330#define ecb_pure ecb_attribute ((__pure__)) 413#define ecb_pure ecb_attribute ((__pure__))
331 414
332#if ECB_C11 415#if ECB_C11 || __IBMC_NORETURN
416 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
333 #define ecb_noreturn _Noreturn 417 #define ecb_noreturn _Noreturn
418#elif ECB_CPP11
419 #define ecb_noreturn [[noreturn]]
420#elif _MSC_VER >= 1200
421 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
422 #define ecb_noreturn __declspec (noreturn)
334#else 423#else
335 #define ecb_noreturn ecb_attribute ((__noreturn__)) 424 #define ecb_noreturn ecb_attribute ((__noreturn__))
336#endif 425#endif
337 426
338#if ECB_GCC_VERSION(4,3) 427#if ECB_GCC_VERSION(4,3)
… …
353/* for compatibility to the rest of the world */ 442/* for compatibility to the rest of the world */
354#define ecb_likely(expr) ecb_expect_true (expr) 443#define ecb_likely(expr) ecb_expect_true (expr)
355#define ecb_unlikely(expr) ecb_expect_false (expr) 444#define ecb_unlikely(expr) ecb_expect_false (expr)
356 445
357/* count trailing zero bits and count # of one bits */ 446/* count trailing zero bits and count # of one bits */
358#if ECB_GCC_VERSION(3,4) 447#if ECB_GCC_VERSION(3,4) \
448 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
449 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
450 && ECB_CLANG_BUILTIN(__builtin_popcount))
359 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 451 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
360 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 452 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
361 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 453 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
362 #define ecb_ctz32(x) __builtin_ctz (x) 454 #define ecb_ctz32(x) __builtin_ctz (x)
363 #define ecb_ctz64(x) __builtin_ctzll (x) 455 #define ecb_ctz64(x) __builtin_ctzll (x)
364 #define ecb_popcount32(x) __builtin_popcount (x) 456 #define ecb_popcount32(x) __builtin_popcount (x)
365 /* no popcountll */ 457 /* no popcountll */
366#else 458#else
367 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 459 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
368 ecb_function_ int 460 ecb_function_ ecb_const int
369 ecb_ctz32 (uint32_t x) 461 ecb_ctz32 (uint32_t x)
370 { 462 {
463#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
464 unsigned long r;
465 _BitScanForward (&r, x);
466 return (int)r;
467#else
371 int r = 0; 468 int r = 0;
372 469
373 x &= ~x + 1; /* this isolates the lowest bit */ 470 x &= ~x + 1; /* this isolates the lowest bit */
374 471
375#if ECB_branchless_on_i386 472#if ECB_branchless_on_i386
… …
385 if (x & 0xff00ff00) r += 8; 482 if (x & 0xff00ff00) r += 8;
386 if (x & 0xffff0000) r += 16; 483 if (x & 0xffff0000) r += 16;
387#endif 484#endif
388 485
389 return r; 486 return r;
487#endif
390 } 488 }
391 489
392 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 490 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
393 ecb_function_ int 491 ecb_function_ ecb_const int
394 ecb_ctz64 (uint64_t x) 492 ecb_ctz64 (uint64_t x)
395 { 493 {
494#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
495 unsigned long r;
496 _BitScanForward64 (&r, x);
497 return (int)r;
498#else
396 int shift = x & 0xffffffffU ? 0 : 32; 499 int shift = x & 0xffffffff ? 0 : 32;
397 return ecb_ctz32 (x >> shift) + shift; 500 return ecb_ctz32 (x >> shift) + shift;
501#endif
398 } 502 }
399 503
400 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 504 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
401 ecb_function_ int 505 ecb_function_ ecb_const int
402 ecb_popcount32 (uint32_t x) 506 ecb_popcount32 (uint32_t x)
403 { 507 {
404 x -= (x >> 1) & 0x55555555; 508 x -= (x >> 1) & 0x55555555;
405 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 509 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
406 x = ((x >> 4) + x) & 0x0f0f0f0f; 510 x = ((x >> 4) + x) & 0x0f0f0f0f;
407 x *= 0x01010101; 511 x *= 0x01010101;
408 512
409 return x >> 24; 513 return x >> 24;
410 } 514 }
411 515
412 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 516 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
413 ecb_function_ int ecb_ld32 (uint32_t x) 517 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
414 { 518 {
519#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
520 unsigned long r;
521 _BitScanReverse (&r, x);
522 return (int)r;
523#else
415 int r = 0; 524 int r = 0;
416 525
417 if (x >> 16) { x >>= 16; r += 16; } 526 if (x >> 16) { x >>= 16; r += 16; }
418 if (x >> 8) { x >>= 8; r += 8; } 527 if (x >> 8) { x >>= 8; r += 8; }
419 if (x >> 4) { x >>= 4; r += 4; } 528 if (x >> 4) { x >>= 4; r += 4; }
420 if (x >> 2) { x >>= 2; r += 2; } 529 if (x >> 2) { x >>= 2; r += 2; }
421 if (x >> 1) { r += 1; } 530 if (x >> 1) { r += 1; }
422 531
423 return r; 532 return r;
533#endif
424 } 534 }
425 535
426 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 536 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
427 ecb_function_ int ecb_ld64 (uint64_t x) 537 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
428 { 538 {
539#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
540 unsigned long r;
541 _BitScanReverse64 (&r, x);
542 return (int)r;
543#else
429 int r = 0; 544 int r = 0;
430 545
431 if (x >> 32) { x >>= 32; r += 32; } 546 if (x >> 32) { x >>= 32; r += 32; }
432 547
433 return r + ecb_ld32 (x); 548 return r + ecb_ld32 (x);
434 }
435#endif 549#endif
550 }
551#endif
436 552
437ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 553ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
438ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 554ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
439ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 555ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
440ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 556ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
441 557
442ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 558ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
443ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 559ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
444{ 560{
445 return ( (x * 0x0802U & 0x22110U) 561 return ( (x * 0x0802U & 0x22110U)
446 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 562 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
447} 563}
448 564
449ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 565ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
450ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 566ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
451{ 567{
452 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 568 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
453 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 569 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
454 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 570 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
455 x = ( x >> 8 ) | ( x << 8); 571 x = ( x >> 8 ) | ( x << 8);
456 572
457 return x; 573 return x;
458} 574}
459 575
460ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 576ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
461ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 577ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
462{ 578{
463 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 579 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
464 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 580 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
465 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 581 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
466 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 582 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
469 return x; 585 return x;
470} 586}
471 587
472/* popcount64 is only available on 64 bit cpus as gcc builtin */ 588/* popcount64 is only available on 64 bit cpus as gcc builtin */
473/* so for this version we are lazy */ 589/* so for this version we are lazy */
474ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 590ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
475ecb_function_ int 591ecb_function_ ecb_const int
476ecb_popcount64 (uint64_t x) 592ecb_popcount64 (uint64_t x)
477{ 593{
478 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 594 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
479} 595}
480 596
481ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 597ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
482ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 598ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
483ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 599ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
484ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 600ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
485ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 601ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
486ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 602ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
487ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 603ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
488ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 604ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
489 605
490ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 606ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
491ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 607ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
492ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 608ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
493ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 609ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
494ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 610ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
495ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 611ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
496ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 612ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
497ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 613ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
498 614
499#if ECB_GCC_VERSION(4,3) 615#if ECB_CPP
616
617inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
618inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
619inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
620inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
621
622inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
623inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
624inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
625inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
626
627inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
628inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
629inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
630inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
631
632inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
633inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
634inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
635inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
636
637inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
638inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
639inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
640
641inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
642inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
643inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
644inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
645
646inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
647inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
648inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
649inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
650
651#endif
652
653#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
654 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
655 #define ecb_bswap16(x) __builtin_bswap16 (x)
656 #else
500 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 657 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
658 #endif
501 #define ecb_bswap32(x) __builtin_bswap32 (x) 659 #define ecb_bswap32(x) __builtin_bswap32 (x)
502 #define ecb_bswap64(x) __builtin_bswap64 (x) 660 #define ecb_bswap64(x) __builtin_bswap64 (x)
661#elif _MSC_VER
662 #include <stdlib.h>
663 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
664 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
665 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
503#else 666#else
504 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 667 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
505 ecb_function_ uint16_t 668 ecb_function_ ecb_const uint16_t
506 ecb_bswap16 (uint16_t x) 669 ecb_bswap16 (uint16_t x)
507 { 670 {
508 return ecb_rotl16 (x, 8); 671 return ecb_rotl16 (x, 8);
509 } 672 }
510 673
511 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 674 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
512 ecb_function_ uint32_t 675 ecb_function_ ecb_const uint32_t
513 ecb_bswap32 (uint32_t x) 676 ecb_bswap32 (uint32_t x)
514 { 677 {
515 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 678 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
516 } 679 }
517 680
518 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 681 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
519 ecb_function_ uint64_t 682 ecb_function_ ecb_const uint64_t
520 ecb_bswap64 (uint64_t x) 683 ecb_bswap64 (uint64_t x)
521 { 684 {
522 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 685 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
523 } 686 }
524#endif 687#endif
525 688
526#if ECB_GCC_VERSION(4,5) 689#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
527 #define ecb_unreachable() __builtin_unreachable () 690 #define ecb_unreachable() __builtin_unreachable ()
528#else 691#else
529 /* this seems to work fine, but gcc always emits a warning for it :/ */ 692 /* this seems to work fine, but gcc always emits a warning for it :/ */
530 ecb_inline void ecb_unreachable (void) ecb_noreturn; 693 ecb_inline ecb_noreturn void ecb_unreachable (void);
531 ecb_inline void ecb_unreachable (void) { } 694 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
532#endif 695#endif
533 696
534/* try to tell the compiler that some condition is definitely true */ 697/* try to tell the compiler that some condition is definitely true */
535#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 698#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
536 699
537ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 700ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
538ecb_inline unsigned char 701ecb_inline ecb_const uint32_t
539ecb_byteorder_helper (void) 702ecb_byteorder_helper (void)
540{ 703{
541 /* the union code still generates code under pressure in gcc, */ 704 /* the union code still generates code under pressure in gcc, */
542 /* but less than using pointers, and always seems to */ 705 /* but less than using pointers, and always seems to */
543 /* successfully return a constant. */ 706 /* successfully return a constant. */
544 /* the reason why we have this horrible preprocessor mess */ 707 /* the reason why we have this horrible preprocessor mess */
545 /* is to avoid it in all cases, at least on common architectures */ 708 /* is to avoid it in all cases, at least on common architectures */
546 /* or when using a recent enough gcc version (>= 4.6) */ 709 /* or when using a recent enough gcc version (>= 4.6) */
547#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
548 return 0x44;
549#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 710#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
711 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
712 #define ECB_LITTLE_ENDIAN 1
550 return 0x44; 713 return 0x44332211;
551#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 714#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
715 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
716 #define ECB_BIG_ENDIAN 1
552 return 0x11; 717 return 0x11223344;
553#else 718#else
554 union 719 union
555 { 720 {
721 uint8_t c[4];
556 uint32_t i; 722 uint32_t u;
557 uint8_t c;
558 } u = { 0x11223344 }; 723 } u = { 0x11, 0x22, 0x33, 0x44 };
559 return u.c; 724 return u.u;
560#endif 725#endif
561} 726}
562 727
563ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 728ecb_inline ecb_const ecb_bool ecb_big_endian (void);
564ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 729ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
565ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 730ecb_inline ecb_const ecb_bool ecb_little_endian (void);
566ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 731ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
732
733/*****************************************************************************/
734/* unaligned load/store */
735
736ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
737ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
738ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
739
740ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
741ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
742ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
743
744ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
745ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
746ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
747
748ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
749ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
750ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
751
752ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
753ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
754ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
755
756ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
757ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
758ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
759
760ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
761ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
762ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
763
764ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
765ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
766ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
767
768ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
769ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
770ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
771
772ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
773ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
774ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
775
776#if ECB_CPP
777
778inline uint8_t ecb_bswap (uint8_t v) { return v; }
779inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
780inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
781inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
782
783template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
784template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
785template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
786template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
787template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
788template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
789template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
790template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
791
792template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
793template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
794template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
795template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
796template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
797template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
798template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
799template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
800
801#endif
802
803/*****************************************************************************/
804/* division */
567 805
568#if ECB_GCC_VERSION(3,0) || ECB_C99 806#if ECB_GCC_VERSION(3,0) || ECB_C99
807 /* C99 tightened the definition of %, so we can use a more efficient version */
569 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 808 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
570#else 809#else
571 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 810 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
572#endif 811#endif
573 812
574#if __cplusplus 813#if ECB_CPP
575 template<typename T> 814 template<typename T>
576 static inline T ecb_div_rd (T val, T div) 815 static inline T ecb_div_rd (T val, T div)
577 { 816 {
578 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 817 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
579 } 818 }
… …
584 } 823 }
585#else 824#else
586 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) 825 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
587 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) 826 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
588#endif 827#endif
828
829/*****************************************************************************/
830/* array length */
589 831
590#if ecb_cplusplus_does_not_suck 832#if ecb_cplusplus_does_not_suck
591 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 833 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
592 template<typename T, int N> 834 template<typename T, int N>
593 static inline int ecb_array_length (const T (&arr)[N]) 835 static inline int ecb_array_length (const T (&arr)[N])
… …
596 } 838 }
597#else 839#else
598 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 840 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
599#endif 841#endif
600 842
843/*****************************************************************************/
844/* IEEE 754-2008 half float conversions */
845
846ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
847ecb_function_ ecb_const uint32_t
848ecb_binary16_to_binary32 (uint32_t x)
849{
850 unsigned int s = (x & 0x8000) << (31 - 15);
851 int e = (x >> 10) & 0x001f;
852 unsigned int m = x & 0x03ff;
853
854 if (ecb_expect_false (e == 31))
855 /* infinity or NaN */
856 e = 255 - (127 - 15);
857 else if (ecb_expect_false (!e))
858 {
859 if (ecb_expect_true (!m))
860 /* zero, handled by code below by forcing e to 0 */
861 e = 0 - (127 - 15);
862 else
863 {
864 /* subnormal, renormalise */
865 unsigned int s = 10 - ecb_ld32 (m);
866
867 m = (m << s) & 0x3ff; /* mask implicit bit */
868 e -= s - 1;
869 }
870 }
871
872 /* e and m now are normalised, or zero, (or inf or nan) */
873 e += 127 - 15;
874
875 return s | (e << 23) | (m << (23 - 10));
876}
877
878ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
879ecb_function_ ecb_const uint16_t
880ecb_binary32_to_binary16 (uint32_t x)
881{
882 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
883 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
884 unsigned int m = x & 0x007fffff;
885
886 x &= 0x7fffffff;
887
888 /* if it's within range of binary16 normals, use fast path */
889 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
890 {
891 /* mantissa round-to-even */
892 m += 0x00000fff + ((m >> (23 - 10)) & 1);
893
894 /* handle overflow */
895 if (ecb_expect_false (m >= 0x00800000))
896 {
897 m >>= 1;
898 e += 1;
899 }
900
901 return s | (e << 10) | (m >> (23 - 10));
902 }
903
904 /* handle large numbers and infinity */
905 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
906 return s | 0x7c00;
907
908 /* handle zero, subnormals and small numbers */
909 if (ecb_expect_true (x < 0x38800000))
910 {
911 /* zero */
912 if (ecb_expect_true (!x))
913 return s;
914
915 /* handle subnormals */
916
917 /* too small, will be zero */
918 if (e < (14 - 24)) /* might not be sharp, but is good enough */
919 return s;
920
921 m |= 0x00800000; /* make implicit bit explicit */
922
923 /* very tricky - we need to round to the nearest e (+10) bit value */
924 {
925 unsigned int bits = 14 - e;
926 unsigned int half = (1 << (bits - 1)) - 1;
927 unsigned int even = (m >> bits) & 1;
928
929 /* if this overflows, we will end up with a normalised number */
930 m = (m + half + even) >> bits;
931 }
932
933 return s | m;
934 }
935
936 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
937 m >>= 13;
938
939 return s | 0x7c00 | m | !m;
940}
941
601/*******************************************************************************/ 942/*******************************************************************************/
602/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 943/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
603 944
604/* basically, everything uses "ieee pure-endian" floating point numbers */ 945/* basically, everything uses "ieee pure-endian" floating point numbers */
605/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 946/* the only noteworthy exception is ancient armle, which uses order 43218765 */
606#if 0 \ 947#if 0 \
607 || __i386 || __i386__ \ 948 || __i386 || __i386__ \
608 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 949 || ECB_GCC_AMD64 \
609 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 950 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
610 || defined __s390__ || defined __s390x__ \ 951 || defined __s390__ || defined __s390x__ \
611 || defined __mips__ \ 952 || defined __mips__ \
612 || defined __alpha__ \ 953 || defined __alpha__ \
613 || defined __hppa__ \ 954 || defined __hppa__ \
614 || defined __ia64__ \ 955 || defined __ia64__ \
615 || defined __m68k__ \ 956 || defined __m68k__ \
616 || defined __m88k__ \ 957 || defined __m88k__ \
617 || defined __sh__ \ 958 || defined __sh__ \
618 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 959 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
619 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 960 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
620 || defined __aarch64__ 961 || defined __aarch64__
621 #define ECB_STDFP 1 962 #define ECB_STDFP 1
622 #include <string.h> /* for memcpy */
623#else 963#else
624 #define ECB_STDFP 0 964 #define ECB_STDFP 0
625#endif 965#endif
626 966
627#ifndef ECB_NO_LIBM 967#ifndef ECB_NO_LIBM
… …
639 #define ECB_NAN NAN 979 #define ECB_NAN NAN
640 #else 980 #else
641 #define ECB_NAN ECB_INFINITY 981 #define ECB_NAN ECB_INFINITY
642 #endif 982 #endif
643 983
644 /* converts an ieee half/binary16 to a float */ 984 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
645 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 985 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
646 ecb_function_ float 986 #define ecb_frexpf(x,e) frexpf ((x), (e))
647 ecb_binary16_to_float (uint16_t x) 987 #else
648 { 988 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
649 int e = (x >> 10) & 0x1f; 989 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
650 int m = x & 0x3ff; 990 #endif
651 float r;
652
653 if (!e ) r = ldexpf (m , -24);
654 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
655 else if (m ) r = ECB_NAN;
656 else r = ECB_INFINITY;
657
658 return x & 0x8000 ? -r : r;
659 }
660 991
661 /* convert a float to ieee single/binary32 */ 992 /* convert a float to ieee single/binary32 */
662 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 993 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
663 ecb_function_ uint32_t 994 ecb_function_ ecb_const uint32_t
664 ecb_float_to_binary32 (float x) 995 ecb_float_to_binary32 (float x)
665 { 996 {
666 uint32_t r; 997 uint32_t r;
667 998
668 #if ECB_STDFP 999 #if ECB_STDFP
… …
675 if (x == 0e0f ) return 0x00000000U; 1006 if (x == 0e0f ) return 0x00000000U;
676 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1007 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
677 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1008 if (x < -3.40282346638528860e+38f) return 0xff800000U;
678 if (x != x ) return 0x7fbfffffU; 1009 if (x != x ) return 0x7fbfffffU;
679 1010
680 m = frexpf (x, &e) * 0x1000000U; 1011 m = ecb_frexpf (x, &e) * 0x1000000U;
681 1012
682 r = m & 0x80000000U; 1013 r = m & 0x80000000U;
683 1014
684 if (r) 1015 if (r)
685 m = -m; 1016 m = -m;
… …
697 1028
698 return r; 1029 return r;
699 } 1030 }
700 1031
701 /* converts an ieee single/binary32 to a float */ 1032 /* converts an ieee single/binary32 to a float */
702 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1033 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
703 ecb_function_ float 1034 ecb_function_ ecb_const float
704 ecb_binary32_to_float (uint32_t x) 1035 ecb_binary32_to_float (uint32_t x)
705 { 1036 {
706 float r; 1037 float r;
707 1038
708 #if ECB_STDFP 1039 #if ECB_STDFP
… …
718 x |= 0x800000U; 1049 x |= 0x800000U;
719 else 1050 else
720 e = 1; 1051 e = 1;
721 1052
722 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1053 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
723 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1054 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
724 1055
725 r = neg ? -r : r; 1056 r = neg ? -r : r;
726 #endif 1057 #endif
727 1058
728 return r; 1059 return r;
729 } 1060 }
730 1061
731 /* convert a double to ieee double/binary64 */ 1062 /* convert a double to ieee double/binary64 */
732 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1063 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
733 ecb_function_ uint64_t 1064 ecb_function_ ecb_const uint64_t
734 ecb_double_to_binary64 (double x) 1065 ecb_double_to_binary64 (double x)
735 { 1066 {
736 uint64_t r; 1067 uint64_t r;
737 1068
738 #if ECB_STDFP 1069 #if ECB_STDFP
… …
767 1098
768 return r; 1099 return r;
769 } 1100 }
770 1101
771 /* converts an ieee double/binary64 to a double */ 1102 /* converts an ieee double/binary64 to a double */
772 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1103 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
773 ecb_function_ double 1104 ecb_function_ ecb_const double
774 ecb_binary64_to_double (uint64_t x) 1105 ecb_binary64_to_double (uint64_t x)
775 { 1106 {
776 double r; 1107 double r;
777 1108
778 #if ECB_STDFP 1109 #if ECB_STDFP
… …
796 #endif 1127 #endif
797 1128
798 return r; 1129 return r;
799 } 1130 }
800 1131
801#endif 1132 /* convert a float to ieee half/binary16 */
1133 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1134 ecb_function_ ecb_const uint16_t
1135 ecb_float_to_binary16 (float x)
1136 {
1137 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1138 }
802 1139
803#endif 1140 /* convert an ieee half/binary16 to float */
1141 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1142 ecb_function_ ecb_const float
1143 ecb_binary16_to_float (uint16_t x)
1144 {
1145 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1146 }
804 1147
1148#endif
1149
1150#endif
1151

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