1 | /* |
1 | /* |
2 | * libecb - http://software.schmorp.de/pkg/libecb |
2 | * libecb - http://software.schmorp.de/pkg/libecb |
3 | * |
3 | * |
4 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
4 | * Copyright (©) 2009-2015,2018-2021 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 0x00010004 |
45 | #define ECB_VERSION 0x00010009 |
46 | |
46 | |
47 | #ifdef _WIN32 |
47 | #include <string.h> /* for memcpy */ |
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48 | |
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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; |
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52 | typedef signed char int_fast8_t; |
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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; |
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56 | typedef signed int int_fast16_t; |
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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; |
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60 | typedef signed int int_fast32_t; |
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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 |
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69 | typedef int64_t int_fast64_t; |
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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 | |
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89 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
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90 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
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91 | |
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92 | #ifndef ECB_OPTIMIZE_SIZE |
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93 | #if __OPTIMIZE_SIZE__ |
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94 | #define ECB_OPTIMIZE_SIZE 1 |
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95 | #else |
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96 | #define ECB_OPTIMIZE_SIZE 0 |
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97 | #endif |
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98 | #endif |
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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 |
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107 | #endif |
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108 | |
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109 | #if ECB_PTRSIZE >= 8 || ECB_AMD64_X32 |
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110 | #define ECB_64BIT_NATIVE 1 |
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111 | #else |
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112 | #define ECB_64BIT_NATIVE 0 |
86 | #endif |
113 | #endif |
87 | |
114 | |
88 | /* many compilers define _GNUC_ to some versions but then only implement |
115 | /* many compilers define _GNUC_ to some versions but then only implement |
89 | * what their idiot authors think are the "more important" extensions, |
116 | * what their idiot authors think are the "more important" extensions, |
90 | * causing enormous grief in return for some better fake benchmark numbers. |
117 | * causing enormous grief in return for some better fake benchmark numbers. |
… | |
… | |
112 | #define ECB_CLANG_EXTENSION(x) 0 |
139 | #define ECB_CLANG_EXTENSION(x) 0 |
113 | #endif |
140 | #endif |
114 | |
141 | |
115 | #define ECB_CPP (__cplusplus+0) |
142 | #define ECB_CPP (__cplusplus+0) |
116 | #define ECB_CPP11 (__cplusplus >= 201103L) |
143 | #define ECB_CPP11 (__cplusplus >= 201103L) |
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144 | #define ECB_CPP14 (__cplusplus >= 201402L) |
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145 | #define ECB_CPP17 (__cplusplus >= 201703L) |
117 | |
146 | |
118 | #if ECB_CPP |
147 | #if ECB_CPP |
119 | #define ECB_C 0 |
148 | #define ECB_C 0 |
120 | #define ECB_STDC_VERSION 0 |
149 | #define ECB_STDC_VERSION 0 |
121 | #else |
150 | #else |
… | |
… | |
123 | #define ECB_STDC_VERSION __STDC_VERSION__ |
152 | #define ECB_STDC_VERSION __STDC_VERSION__ |
124 | #endif |
153 | #endif |
125 | |
154 | |
126 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
155 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
127 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
156 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
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157 | #define ECB_C17 (ECB_STDC_VERSION >= 201710L) |
128 | |
158 | |
129 | #if ECB_CPP |
159 | #if ECB_CPP |
130 | #define ECB_EXTERN_C extern "C" |
160 | #define ECB_EXTERN_C extern "C" |
131 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
161 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
132 | #define ECB_EXTERN_C_END } |
162 | #define ECB_EXTERN_C_END } |
… | |
… | |
147 | |
177 | |
148 | #if ECB_NO_SMP |
178 | #if ECB_NO_SMP |
149 | #define ECB_MEMORY_FENCE do { } while (0) |
179 | #define ECB_MEMORY_FENCE do { } while (0) |
150 | #endif |
180 | #endif |
151 | |
181 | |
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182 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
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183 | #if __xlC__ && ECB_CPP |
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184 | #include <builtins.h> |
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185 | #endif |
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186 | |
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187 | #if 1400 <= _MSC_VER |
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188 | #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ |
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189 | #endif |
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190 | |
152 | #ifndef ECB_MEMORY_FENCE |
191 | #ifndef ECB_MEMORY_FENCE |
153 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
192 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
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193 | #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory") |
154 | #if __i386 || __i386__ |
194 | #if __i386 || __i386__ |
155 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
195 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
156 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
196 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
157 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
197 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
158 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
198 | #elif ECB_GCC_AMD64 |
159 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
199 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
160 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
200 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
161 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
201 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
162 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
202 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
163 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
203 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
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204 | #elif defined __ARM_ARCH_2__ \ |
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205 | || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ |
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206 | || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ |
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207 | || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \ |
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208 | || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \ |
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209 | || defined __ARM_ARCH_5TEJ__ |
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210 | /* should not need any, unless running old code on newer cpu - arm doesn't support that */ |
164 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
211 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
165 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
212 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
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213 | || defined __ARM_ARCH_6T2__ |
166 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
214 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
167 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
215 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
168 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
216 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
169 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
217 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
170 | #elif __aarch64__ |
218 | #elif __aarch64__ |
171 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
219 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
172 | #elif (__sparc || __sparc__) && !__sparcv8 |
220 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
173 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
221 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
174 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
222 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
175 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
223 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
176 | #elif defined __s390__ || defined __s390x__ |
224 | #elif defined __s390__ || defined __s390x__ |
177 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
225 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
… | |
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200 | #if ECB_GCC_VERSION(4,7) |
248 | #if ECB_GCC_VERSION(4,7) |
201 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
249 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
202 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
250 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
203 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
251 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
204 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
252 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
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253 | #undef ECB_MEMORY_FENCE_RELAXED |
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254 | #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED) |
205 | |
255 | |
206 | #elif ECB_CLANG_EXTENSION(c_atomic) |
256 | #elif ECB_CLANG_EXTENSION(c_atomic) |
207 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
257 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
208 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
258 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
209 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
259 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
210 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
260 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
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261 | #undef ECB_MEMORY_FENCE_RELAXED |
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262 | #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED) |
211 | |
263 | |
212 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
264 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
213 | #define ECB_MEMORY_FENCE __sync_synchronize () |
265 | #define ECB_MEMORY_FENCE __sync_synchronize () |
214 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
266 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
215 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
267 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
… | |
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225 | #elif defined _WIN32 |
277 | #elif defined _WIN32 |
226 | #include <WinNT.h> |
278 | #include <WinNT.h> |
227 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
279 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
228 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
280 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
229 | #include <mbarrier.h> |
281 | #include <mbarrier.h> |
230 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
282 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
231 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
283 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier () |
232 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
284 | #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier () |
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285 | #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier () |
233 | #elif __xlC__ |
286 | #elif __xlC__ |
234 | #define ECB_MEMORY_FENCE __sync () |
287 | #define ECB_MEMORY_FENCE __sync () |
235 | #endif |
288 | #endif |
236 | #endif |
289 | #endif |
237 | |
290 | |
238 | #ifndef ECB_MEMORY_FENCE |
291 | #ifndef ECB_MEMORY_FENCE |
239 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
292 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
240 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
293 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
241 | /* not just C11 atomics and atomic accesses */ |
294 | /* not just C11 atomics and atomic accesses */ |
242 | #include <stdatomic.h> |
295 | #include <stdatomic.h> |
243 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
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244 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
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245 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
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246 | /* for most usages, or gcc and clang have a bug */ |
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247 | /* I *currently* lean towards the latter, and inefficiently implement */ |
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248 | /* all three of ecb's fences as a seq_cst fence */ |
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249 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
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250 | /* for all __atomic_thread_fence's except seq_cst */ |
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251 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
296 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
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297 | #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire) |
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298 | #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release) |
252 | #endif |
299 | #endif |
253 | #endif |
300 | #endif |
254 | |
301 | |
255 | #ifndef ECB_MEMORY_FENCE |
302 | #ifndef ECB_MEMORY_FENCE |
256 | #if !ECB_AVOID_PTHREADS |
303 | #if !ECB_AVOID_PTHREADS |
… | |
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276 | |
323 | |
277 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
324 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
278 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
325 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
279 | #endif |
326 | #endif |
280 | |
327 | |
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328 | #if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE |
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329 | #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */ |
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330 | #endif |
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331 | |
281 | /*****************************************************************************/ |
332 | /*****************************************************************************/ |
282 | |
333 | |
283 | #if ECB_CPP |
334 | #if ECB_CPP |
284 | #define ecb_inline static inline |
335 | #define ecb_inline static inline |
285 | #elif ECB_GCC_VERSION(2,5) |
336 | #elif ECB_GCC_VERSION(2,5) |
… | |
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302 | |
353 | |
303 | #define ECB_CONCAT_(a, b) a ## b |
354 | #define ECB_CONCAT_(a, b) a ## b |
304 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
355 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
305 | #define ECB_STRINGIFY_(a) # a |
356 | #define ECB_STRINGIFY_(a) # a |
306 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
357 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
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358 | #define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr)) |
307 | |
359 | |
308 | #define ecb_function_ ecb_inline |
360 | #define ecb_function_ ecb_inline |
309 | |
361 | |
310 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
362 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
311 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
363 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
… | |
… | |
348 | #define ecb_deprecated __declspec (deprecated) |
400 | #define ecb_deprecated __declspec (deprecated) |
349 | #else |
401 | #else |
350 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
402 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
351 | #endif |
403 | #endif |
352 | |
404 | |
353 | #if __MSC_VER >= 1500 |
405 | #if _MSC_VER >= 1500 |
354 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
406 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
355 | #elif ECB_GCC_VERSION(4,5) |
407 | #elif ECB_GCC_VERSION(4,5) |
356 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
408 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
357 | #else |
409 | #else |
358 | #define ecb_deprecated_message(msg) ecb_deprecated |
410 | #define ecb_deprecated_message(msg) ecb_deprecated |
… | |
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366 | |
418 | |
367 | #define ecb_unused ecb_attribute ((__unused__)) |
419 | #define ecb_unused ecb_attribute ((__unused__)) |
368 | #define ecb_const ecb_attribute ((__const__)) |
420 | #define ecb_const ecb_attribute ((__const__)) |
369 | #define ecb_pure ecb_attribute ((__pure__)) |
421 | #define ecb_pure ecb_attribute ((__pure__)) |
370 | |
422 | |
371 | /* TODO http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ |
|
|
372 | #if ECB_C11 || __IBMC_NORETURN |
423 | #if ECB_C11 || __IBMC_NORETURN |
373 | /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */ |
424 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ |
374 | #define ecb_noreturn _Noreturn |
425 | #define ecb_noreturn _Noreturn |
375 | #elif ECB_CPP11 |
426 | #elif ECB_CPP11 |
376 | #define ecb_noreturn [[noreturn]] |
427 | #define ecb_noreturn [[noreturn]] |
377 | #elif _MSC_VER >= 1200 |
428 | #elif _MSC_VER >= 1200 |
|
|
429 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ |
378 | #define ecb_noreturn __declspec (noreturn) |
430 | #define ecb_noreturn __declspec (noreturn) |
379 | #else |
431 | #else |
380 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
432 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
381 | #endif |
433 | #endif |
382 | |
434 | |
… | |
… | |
414 | #else |
466 | #else |
415 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
467 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
416 | ecb_function_ ecb_const int |
468 | ecb_function_ ecb_const int |
417 | ecb_ctz32 (uint32_t x) |
469 | ecb_ctz32 (uint32_t x) |
418 | { |
470 | { |
|
|
471 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
472 | unsigned long r; |
|
|
473 | _BitScanForward (&r, x); |
|
|
474 | return (int)r; |
|
|
475 | #else |
419 | int r = 0; |
476 | int r = 0; |
420 | |
477 | |
421 | x &= ~x + 1; /* this isolates the lowest bit */ |
478 | x &= ~x + 1; /* this isolates the lowest bit */ |
422 | |
479 | |
423 | #if ECB_branchless_on_i386 |
480 | #if ECB_branchless_on_i386 |
… | |
… | |
433 | if (x & 0xff00ff00) r += 8; |
490 | if (x & 0xff00ff00) r += 8; |
434 | if (x & 0xffff0000) r += 16; |
491 | if (x & 0xffff0000) r += 16; |
435 | #endif |
492 | #endif |
436 | |
493 | |
437 | return r; |
494 | return r; |
|
|
495 | #endif |
438 | } |
496 | } |
439 | |
497 | |
440 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
498 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
441 | ecb_function_ ecb_const int |
499 | ecb_function_ ecb_const int |
442 | ecb_ctz64 (uint64_t x) |
500 | ecb_ctz64 (uint64_t x) |
443 | { |
501 | { |
|
|
502 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
503 | unsigned long r; |
|
|
504 | _BitScanForward64 (&r, x); |
|
|
505 | return (int)r; |
|
|
506 | #else |
444 | int shift = x & 0xffffffffU ? 0 : 32; |
507 | int shift = x & 0xffffffff ? 0 : 32; |
445 | return ecb_ctz32 (x >> shift) + shift; |
508 | return ecb_ctz32 (x >> shift) + shift; |
|
|
509 | #endif |
446 | } |
510 | } |
447 | |
511 | |
448 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
512 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
449 | ecb_function_ ecb_const int |
513 | ecb_function_ ecb_const int |
450 | ecb_popcount32 (uint32_t x) |
514 | ecb_popcount32 (uint32_t x) |
… | |
… | |
458 | } |
522 | } |
459 | |
523 | |
460 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
524 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
461 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
525 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
462 | { |
526 | { |
|
|
527 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
528 | unsigned long r; |
|
|
529 | _BitScanReverse (&r, x); |
|
|
530 | return (int)r; |
|
|
531 | #else |
463 | int r = 0; |
532 | int r = 0; |
464 | |
533 | |
465 | if (x >> 16) { x >>= 16; r += 16; } |
534 | if (x >> 16) { x >>= 16; r += 16; } |
466 | if (x >> 8) { x >>= 8; r += 8; } |
535 | if (x >> 8) { x >>= 8; r += 8; } |
467 | if (x >> 4) { x >>= 4; r += 4; } |
536 | if (x >> 4) { x >>= 4; r += 4; } |
468 | if (x >> 2) { x >>= 2; r += 2; } |
537 | if (x >> 2) { x >>= 2; r += 2; } |
469 | if (x >> 1) { r += 1; } |
538 | if (x >> 1) { r += 1; } |
470 | |
539 | |
471 | return r; |
540 | return r; |
|
|
541 | #endif |
472 | } |
542 | } |
473 | |
543 | |
474 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
544 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
475 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
545 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
476 | { |
546 | { |
|
|
547 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
548 | unsigned long r; |
|
|
549 | _BitScanReverse64 (&r, x); |
|
|
550 | return (int)r; |
|
|
551 | #else |
477 | int r = 0; |
552 | int r = 0; |
478 | |
553 | |
479 | if (x >> 32) { x >>= 32; r += 32; } |
554 | if (x >> 32) { x >>= 32; r += 32; } |
480 | |
555 | |
481 | return r + ecb_ld32 (x); |
556 | return r + ecb_ld32 (x); |
|
|
557 | #endif |
482 | } |
558 | } |
483 | #endif |
559 | #endif |
484 | |
560 | |
485 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
561 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
486 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
562 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
… | |
… | |
542 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
618 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
543 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
619 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
544 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
620 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
545 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
621 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
546 | |
622 | |
|
|
623 | #if ECB_CPP |
|
|
624 | |
|
|
625 | inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); } |
|
|
626 | inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); } |
|
|
627 | inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); } |
|
|
628 | inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); } |
|
|
629 | |
|
|
630 | inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); } |
|
|
631 | inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); } |
|
|
632 | inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); } |
|
|
633 | inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); } |
|
|
634 | |
|
|
635 | inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); } |
|
|
636 | inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); } |
|
|
637 | inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); } |
|
|
638 | inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); } |
|
|
639 | |
|
|
640 | inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); } |
|
|
641 | inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); } |
|
|
642 | inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); } |
|
|
643 | inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); } |
|
|
644 | |
|
|
645 | inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); } |
|
|
646 | inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); } |
|
|
647 | inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); } |
|
|
648 | |
|
|
649 | inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); } |
|
|
650 | inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); } |
|
|
651 | inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); } |
|
|
652 | inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); } |
|
|
653 | |
|
|
654 | inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); } |
|
|
655 | inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); } |
|
|
656 | inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); } |
|
|
657 | inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); } |
|
|
658 | |
|
|
659 | #endif |
|
|
660 | |
547 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
661 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
|
|
662 | #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) |
|
|
663 | #define ecb_bswap16(x) __builtin_bswap16 (x) |
|
|
664 | #else |
548 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
665 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
666 | #endif |
549 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
667 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
550 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
668 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
669 | #elif _MSC_VER |
|
|
670 | #include <stdlib.h> |
|
|
671 | #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x))) |
|
|
672 | #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x))) |
|
|
673 | #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x))) |
551 | #else |
674 | #else |
552 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
675 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
553 | ecb_function_ ecb_const uint16_t |
676 | ecb_function_ ecb_const uint16_t |
554 | ecb_bswap16 (uint16_t x) |
677 | ecb_bswap16 (uint16_t x) |
555 | { |
678 | { |
… | |
… | |
580 | #endif |
703 | #endif |
581 | |
704 | |
582 | /* try to tell the compiler that some condition is definitely true */ |
705 | /* try to tell the compiler that some condition is definitely true */ |
583 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
706 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
584 | |
707 | |
585 | ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); |
708 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
586 | ecb_inline ecb_const unsigned char |
709 | ecb_inline ecb_const uint32_t |
587 | ecb_byteorder_helper (void) |
710 | ecb_byteorder_helper (void) |
588 | { |
711 | { |
589 | /* the union code still generates code under pressure in gcc, */ |
712 | /* the union code still generates code under pressure in gcc, */ |
590 | /* but less than using pointers, and always seems to */ |
713 | /* but less than using pointers, and always seems to */ |
591 | /* successfully return a constant. */ |
714 | /* successfully return a constant. */ |
592 | /* the reason why we have this horrible preprocessor mess */ |
715 | /* the reason why we have this horrible preprocessor mess */ |
593 | /* is to avoid it in all cases, at least on common architectures */ |
716 | /* is to avoid it in all cases, at least on common architectures */ |
594 | /* or when using a recent enough gcc version (>= 4.6) */ |
717 | /* or when using a recent enough gcc version (>= 4.6) */ |
595 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
596 | return 0x44; |
|
|
597 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
718 | #if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ |
|
|
719 | || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__) |
|
|
720 | #define ECB_LITTLE_ENDIAN 1 |
598 | return 0x44; |
721 | return 0x44332211; |
599 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
722 | #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
|
|
723 | || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
|
|
724 | #define ECB_BIG_ENDIAN 1 |
600 | return 0x11; |
725 | return 0x11223344; |
601 | #else |
726 | #else |
602 | union |
727 | union |
603 | { |
728 | { |
|
|
729 | uint8_t c[4]; |
604 | uint32_t i; |
730 | uint32_t u; |
605 | uint8_t c; |
|
|
606 | } u = { 0x11223344 }; |
731 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
607 | return u.c; |
732 | return u.u; |
608 | #endif |
733 | #endif |
609 | } |
734 | } |
610 | |
735 | |
611 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
736 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
612 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
737 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
613 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
738 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
614 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
739 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
|
|
740 | |
|
|
741 | /*****************************************************************************/ |
|
|
742 | /* unaligned load/store */ |
|
|
743 | |
|
|
744 | ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; } |
|
|
745 | ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; } |
|
|
746 | ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; } |
|
|
747 | |
|
|
748 | ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; } |
|
|
749 | ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; } |
|
|
750 | ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; } |
|
|
751 | |
|
|
752 | ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
753 | ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
754 | ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
755 | |
|
|
756 | ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); } |
|
|
757 | ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); } |
|
|
758 | ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); } |
|
|
759 | |
|
|
760 | ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); } |
|
|
761 | ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); } |
|
|
762 | ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); } |
|
|
763 | |
|
|
764 | ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; } |
|
|
765 | ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; } |
|
|
766 | ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; } |
|
|
767 | |
|
|
768 | ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; } |
|
|
769 | ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; } |
|
|
770 | ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; } |
|
|
771 | |
|
|
772 | ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
773 | ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
774 | ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
775 | |
|
|
776 | ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); } |
|
|
777 | ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); } |
|
|
778 | ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); } |
|
|
779 | |
|
|
780 | ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); } |
|
|
781 | ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); } |
|
|
782 | ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); } |
|
|
783 | |
|
|
784 | #if ECB_CPP |
|
|
785 | |
|
|
786 | inline uint8_t ecb_bswap (uint8_t v) { return v; } |
|
|
787 | inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); } |
|
|
788 | inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); } |
|
|
789 | inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); } |
|
|
790 | |
|
|
791 | template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; } |
|
|
792 | template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; } |
|
|
793 | template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; } |
|
|
794 | template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); } |
|
|
795 | template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); } |
|
|
796 | template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
797 | template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); } |
|
|
798 | template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); } |
|
|
799 | |
|
|
800 | template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; } |
|
|
801 | template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; } |
|
|
802 | template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; } |
|
|
803 | template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); } |
|
|
804 | template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); } |
|
|
805 | template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
806 | template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); } |
|
|
807 | template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); } |
|
|
808 | |
|
|
809 | #endif |
|
|
810 | |
|
|
811 | /*****************************************************************************/ |
|
|
812 | /* division */ |
615 | |
813 | |
616 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
814 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
815 | /* C99 tightened the definition of %, so we can use a more efficient version */ |
617 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
816 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
618 | #else |
817 | #else |
619 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
818 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
620 | #endif |
819 | #endif |
621 | |
820 | |
… | |
… | |
632 | } |
831 | } |
633 | #else |
832 | #else |
634 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
833 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
635 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
834 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
636 | #endif |
835 | #endif |
|
|
836 | |
|
|
837 | /*****************************************************************************/ |
|
|
838 | /* array length */ |
637 | |
839 | |
638 | #if ecb_cplusplus_does_not_suck |
840 | #if ecb_cplusplus_does_not_suck |
639 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
841 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
640 | template<typename T, int N> |
842 | template<typename T, int N> |
641 | static inline int ecb_array_length (const T (&arr)[N]) |
843 | static inline int ecb_array_length (const T (&arr)[N]) |
… | |
… | |
644 | } |
846 | } |
645 | #else |
847 | #else |
646 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
848 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
647 | #endif |
849 | #endif |
648 | |
850 | |
|
|
851 | /*****************************************************************************/ |
|
|
852 | /* IEEE 754-2008 half float conversions */ |
|
|
853 | |
|
|
854 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
|
|
855 | ecb_function_ ecb_const uint32_t |
|
|
856 | ecb_binary16_to_binary32 (uint32_t x) |
|
|
857 | { |
|
|
858 | unsigned int s = (x & 0x8000) << (31 - 15); |
|
|
859 | int e = (x >> 10) & 0x001f; |
|
|
860 | unsigned int m = x & 0x03ff; |
|
|
861 | |
|
|
862 | if (ecb_expect_false (e == 31)) |
|
|
863 | /* infinity or NaN */ |
|
|
864 | e = 255 - (127 - 15); |
|
|
865 | else if (ecb_expect_false (!e)) |
|
|
866 | { |
|
|
867 | if (ecb_expect_true (!m)) |
|
|
868 | /* zero, handled by code below by forcing e to 0 */ |
|
|
869 | e = 0 - (127 - 15); |
|
|
870 | else |
|
|
871 | { |
|
|
872 | /* subnormal, renormalise */ |
|
|
873 | unsigned int s = 10 - ecb_ld32 (m); |
|
|
874 | |
|
|
875 | m = (m << s) & 0x3ff; /* mask implicit bit */ |
|
|
876 | e -= s - 1; |
|
|
877 | } |
|
|
878 | } |
|
|
879 | |
|
|
880 | /* e and m now are normalised, or zero, (or inf or nan) */ |
|
|
881 | e += 127 - 15; |
|
|
882 | |
|
|
883 | return s | (e << 23) | (m << (23 - 10)); |
|
|
884 | } |
|
|
885 | |
|
|
886 | ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
|
|
887 | ecb_function_ ecb_const uint16_t |
|
|
888 | ecb_binary32_to_binary16 (uint32_t x) |
|
|
889 | { |
|
|
890 | unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */ |
|
|
891 | int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */ |
|
|
892 | unsigned int m = x & 0x007fffff; |
|
|
893 | |
|
|
894 | x &= 0x7fffffff; |
|
|
895 | |
|
|
896 | /* if it's within range of binary16 normals, use fast path */ |
|
|
897 | if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff)) |
|
|
898 | { |
|
|
899 | /* mantissa round-to-even */ |
|
|
900 | m += 0x00000fff + ((m >> (23 - 10)) & 1); |
|
|
901 | |
|
|
902 | /* handle overflow */ |
|
|
903 | if (ecb_expect_false (m >= 0x00800000)) |
|
|
904 | { |
|
|
905 | m >>= 1; |
|
|
906 | e += 1; |
|
|
907 | } |
|
|
908 | |
|
|
909 | return s | (e << 10) | (m >> (23 - 10)); |
|
|
910 | } |
|
|
911 | |
|
|
912 | /* handle large numbers and infinity */ |
|
|
913 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
|
|
914 | return s | 0x7c00; |
|
|
915 | |
|
|
916 | /* handle zero, subnormals and small numbers */ |
|
|
917 | if (ecb_expect_true (x < 0x38800000)) |
|
|
918 | { |
|
|
919 | /* zero */ |
|
|
920 | if (ecb_expect_true (!x)) |
|
|
921 | return s; |
|
|
922 | |
|
|
923 | /* handle subnormals */ |
|
|
924 | |
|
|
925 | /* too small, will be zero */ |
|
|
926 | if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
|
|
927 | return s; |
|
|
928 | |
|
|
929 | m |= 0x00800000; /* make implicit bit explicit */ |
|
|
930 | |
|
|
931 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
|
|
932 | { |
|
|
933 | unsigned int bits = 14 - e; |
|
|
934 | unsigned int half = (1 << (bits - 1)) - 1; |
|
|
935 | unsigned int even = (m >> bits) & 1; |
|
|
936 | |
|
|
937 | /* if this overflows, we will end up with a normalised number */ |
|
|
938 | m = (m + half + even) >> bits; |
|
|
939 | } |
|
|
940 | |
|
|
941 | return s | m; |
|
|
942 | } |
|
|
943 | |
|
|
944 | /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */ |
|
|
945 | m >>= 13; |
|
|
946 | |
|
|
947 | return s | 0x7c00 | m | !m; |
|
|
948 | } |
|
|
949 | |
|
|
950 | /*******************************************************************************/ |
|
|
951 | /* fast integer to ascii */ |
|
|
952 | |
|
|
953 | // simply return a mask with "bits" bits set |
|
|
954 | #define ecb_i2a_mask(type,bits) ((((type)1) << (bits)) - 1) |
|
|
955 | |
|
|
956 | // oputput a single digit. maskvalue is 10**digitidx |
|
|
957 | #define ecb_i2a_digit(type,bits,digitmask,maskvalue,digitidx) \ |
|
|
958 | if (digitmask >= maskvalue) /* constant, used to decide how many digits to generate */ \ |
|
|
959 | { \ |
|
|
960 | char digit = x >> (bits - digitidx); /* calculate the topmost digit */ \ |
|
|
961 | *ptr = digit + '0'; /* output it */ \ |
|
|
962 | nz = (digitmask == maskvalue) || nz || digit; /* first term == always output last digit */ \ |
|
|
963 | ptr += nz; /* output digit only if non-zero digit seen */ \ |
|
|
964 | x = (x & ecb_i2a_mask (type, bits - digitidx)) * 5; /* *10, but shift decimal point right */ \ |
|
|
965 | } |
|
|
966 | |
|
|
967 | // convert integer to fixed point format and multiply out digits, highest first |
|
|
968 | // requires magic constants: max. digits and number of bits after the decimal point |
|
|
969 | #define ecb_i2a_def(suffix,ptr,v,type,bits,digitmask,lz) \ |
|
|
970 | ecb_inline char *ecb_i2a_ ## suffix (char *ptr, uint32_t u) \ |
|
|
971 | { \ |
|
|
972 | char nz = lz; /* non-zero digit seen? */ \ |
|
|
973 | /* convert to x.bits fixed-point */ \ |
|
|
974 | type x = u * ((ecb_i2a_mask (type, bits) + digitmask) / digitmask); \ |
|
|
975 | /* output up to 10 digits */ \ |
|
|
976 | ecb_i2a_digit (type,bits,digitmask, 1, 0); \ |
|
|
977 | ecb_i2a_digit (type,bits,digitmask, 10, 1); \ |
|
|
978 | ecb_i2a_digit (type,bits,digitmask, 100, 2); \ |
|
|
979 | ecb_i2a_digit (type,bits,digitmask, 1000, 3); \ |
|
|
980 | ecb_i2a_digit (type,bits,digitmask, 10000, 4); \ |
|
|
981 | ecb_i2a_digit (type,bits,digitmask, 100000, 5); \ |
|
|
982 | ecb_i2a_digit (type,bits,digitmask, 1000000, 6); \ |
|
|
983 | ecb_i2a_digit (type,bits,digitmask, 10000000, 7); \ |
|
|
984 | ecb_i2a_digit (type,bits,digitmask, 100000000, 8); \ |
|
|
985 | ecb_i2a_digit (type,bits,digitmask, 1000000000, 9); \ |
|
|
986 | return ptr; \ |
|
|
987 | } |
|
|
988 | |
|
|
989 | // predefined versions of the above, for various digits |
|
|
990 | // ecb_i2a_xN = almost N digits, limit defined by macro |
|
|
991 | // ecb_i2a_N = up to N digits, leading zeroes suppressed |
|
|
992 | // ecb_i2a_0N = exactly N digits, including leading zeroes |
|
|
993 | |
|
|
994 | // non-leading-zero versions, limited range |
|
|
995 | #define ECB_I2A_MAX_X5 59074 // limit for ecb_i2a_x5 |
|
|
996 | #define ECB_I2A_MAX_X10 2932500665 // limit for ecb_i2a_x10 |
|
|
997 | ecb_i2a_def ( x5, ptr, v, uint32_t, 26, 10000, 0) |
|
|
998 | ecb_i2a_def (x10, ptr, v, uint64_t, 60, 1000000000, 0) |
|
|
999 | |
|
|
1000 | // non-leading zero versions, all digits, 4 and 9 are optimal for 32/64 bit |
|
|
1001 | ecb_i2a_def ( 2, ptr, v, uint32_t, 10, 10, 0) |
|
|
1002 | ecb_i2a_def ( 3, ptr, v, uint32_t, 12, 100, 0) |
|
|
1003 | ecb_i2a_def ( 4, ptr, v, uint32_t, 26, 1000, 0) |
|
|
1004 | ecb_i2a_def ( 5, ptr, v, uint64_t, 30, 10000, 0) |
|
|
1005 | ecb_i2a_def ( 6, ptr, v, uint64_t, 36, 100000, 0) |
|
|
1006 | ecb_i2a_def ( 7, ptr, v, uint64_t, 44, 1000000, 0) |
|
|
1007 | ecb_i2a_def ( 8, ptr, v, uint64_t, 50, 10000000, 0) |
|
|
1008 | ecb_i2a_def ( 9, ptr, v, uint64_t, 56, 100000000, 0) |
|
|
1009 | |
|
|
1010 | // leading-zero versions, all digits, 04 and 09 are optimal for 32/64 bit |
|
|
1011 | ecb_i2a_def (02, ptr, v, uint32_t, 10, 10, 1) |
|
|
1012 | ecb_i2a_def (03, ptr, v, uint32_t, 12, 100, 1) |
|
|
1013 | ecb_i2a_def (04, ptr, v, uint32_t, 26, 1000, 1) |
|
|
1014 | ecb_i2a_def (05, ptr, v, uint64_t, 30, 10000, 1) |
|
|
1015 | ecb_i2a_def (06, ptr, v, uint64_t, 36, 100000, 1) |
|
|
1016 | ecb_i2a_def (07, ptr, v, uint64_t, 44, 1000000, 1) |
|
|
1017 | ecb_i2a_def (08, ptr, v, uint64_t, 50, 10000000, 1) |
|
|
1018 | ecb_i2a_def (09, ptr, v, uint64_t, 56, 100000000, 1) |
|
|
1019 | |
|
|
1020 | #define ECB_I2A_I32_DIGITS 11 |
|
|
1021 | #define ECB_I2A_U32_DIGITS 10 |
|
|
1022 | #define ECB_I2A_I64_DIGITS 20 |
|
|
1023 | #define ECB_I2A_U32_DIGITS 21 |
|
|
1024 | #define ECB_I2A_DIGITS 21 |
|
|
1025 | |
|
|
1026 | ecb_inline char * |
|
|
1027 | ecb_i2a_u32 (char *ptr, uint32_t u) |
|
|
1028 | { |
|
|
1029 | #if ECB_64BIT_NATIVE |
|
|
1030 | if (ecb_expect_true (u <= ECB_I2A_MAX_X10)) |
|
|
1031 | ptr = ecb_i2a_x10 (ptr, u); |
|
|
1032 | else // x10 almost, but not fully, covers 32 bit |
|
|
1033 | { |
|
|
1034 | uint32_t u1 = u % 1000000000; |
|
|
1035 | uint32_t u2 = u / 1000000000; |
|
|
1036 | |
|
|
1037 | *ptr++ = u2 + '0'; |
|
|
1038 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1039 | } |
|
|
1040 | #else |
|
|
1041 | if (ecb_expect_true (u <= ECB_I2A_MAX_X5)) |
|
|
1042 | ecb_i2a_x5 (ptr, u); |
|
|
1043 | else if (ecb_expect_true (u <= ECB_I2A_MAX_X5 * 10000)) |
|
|
1044 | { |
|
|
1045 | uint32_t u1 = u % 10000; |
|
|
1046 | uint32_t u2 = u / 10000; |
|
|
1047 | |
|
|
1048 | ptr = ecb_i2a_x5 (ptr, u2); |
|
|
1049 | ptr = ecb_i2a_04 (ptr, u1); |
|
|
1050 | } |
|
|
1051 | else |
|
|
1052 | { |
|
|
1053 | uint32_t u1 = u % 10000; |
|
|
1054 | uint32_t ua = u / 10000; |
|
|
1055 | uint32_t u2 = ua % 10000; |
|
|
1056 | uint32_t u3 = ua / 10000; |
|
|
1057 | |
|
|
1058 | ptr = ecb_i2a_2 (ptr, u3); |
|
|
1059 | ptr = ecb_i2a_04 (ptr, u2); |
|
|
1060 | ptr = ecb_i2a_04 (ptr, u1); |
|
|
1061 | } |
|
|
1062 | #endif |
|
|
1063 | |
|
|
1064 | return ptr; |
|
|
1065 | } |
|
|
1066 | |
|
|
1067 | ecb_inline char * |
|
|
1068 | ecb_i2a_i32 (char *ptr, int32_t v) |
|
|
1069 | { |
|
|
1070 | *ptr = '-'; ptr += v < 0; |
|
|
1071 | uint32_t u = v < 0 ? -(uint32_t)v : v; |
|
|
1072 | |
|
|
1073 | #if ECB_64BIT_NATIVE |
|
|
1074 | ptr = ecb_i2a_x10 (ptr, u); // x10 fully covers 31 bit |
|
|
1075 | #else |
|
|
1076 | ptr = ecb_i2a_u32 (ptr, u); |
|
|
1077 | #endif |
|
|
1078 | |
|
|
1079 | return ptr; |
|
|
1080 | } |
|
|
1081 | |
|
|
1082 | ecb_inline char * |
|
|
1083 | ecb_i2a_u64 (char *ptr, uint64_t u) |
|
|
1084 | { |
|
|
1085 | #if ECB_64BIT_NATIVE |
|
|
1086 | if (ecb_expect_true (u <= ECB_I2A_MAX_X10)) |
|
|
1087 | ptr = ecb_i2a_x10 (ptr, u); |
|
|
1088 | else if (ecb_expect_false (u <= ECB_I2A_MAX_X10 * 1000000000)) |
|
|
1089 | { |
|
|
1090 | uint64_t u1 = u % 1000000000; |
|
|
1091 | uint64_t u2 = u / 1000000000; |
|
|
1092 | |
|
|
1093 | ptr = ecb_i2a_x10 (ptr, u2); |
|
|
1094 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1095 | } |
|
|
1096 | else |
|
|
1097 | { |
|
|
1098 | uint64_t u1 = u % 1000000000; |
|
|
1099 | uint64_t ua = u / 1000000000; |
|
|
1100 | uint64_t u2 = ua % 1000000000; |
|
|
1101 | uint64_t u3 = ua / 1000000000; |
|
|
1102 | |
|
|
1103 | ptr = ecb_i2a_2 (ptr, u3); |
|
|
1104 | ptr = ecb_i2a_09 (ptr, u2); |
|
|
1105 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1106 | } |
|
|
1107 | #else |
|
|
1108 | if (ecb_expect_true (u <= ECB_I2A_MAX_X5)) |
|
|
1109 | ptr = ecb_i2a_x5 (ptr, u); |
|
|
1110 | else |
|
|
1111 | { |
|
|
1112 | uint64_t u1 = u % 10000; |
|
|
1113 | uint64_t u2 = u / 10000; |
|
|
1114 | |
|
|
1115 | ptr = ecb_i2a_u64 (ptr, u2); |
|
|
1116 | ptr = ecb_i2a_04 (ptr, u1); |
|
|
1117 | } |
|
|
1118 | #endif |
|
|
1119 | |
|
|
1120 | return ptr; |
|
|
1121 | } |
|
|
1122 | |
|
|
1123 | ecb_inline char * |
|
|
1124 | ecb_i2a_i64 (char *ptr, int64_t v) |
|
|
1125 | { |
|
|
1126 | *ptr = '-'; ptr += v < 0; |
|
|
1127 | uint64_t u = v < 0 ? -(uint64_t)v : v; |
|
|
1128 | |
|
|
1129 | #if ECB_64BIT_NATIVE |
|
|
1130 | if (ecb_expect_true (u <= ECB_I2A_MAX_X10)) |
|
|
1131 | ptr = ecb_i2a_x10 (ptr, u); |
|
|
1132 | else if (ecb_expect_false (u <= ECB_I2A_MAX_X10 * 1000000000)) |
|
|
1133 | { |
|
|
1134 | uint64_t u1 = u % 1000000000; |
|
|
1135 | uint64_t u2 = u / 1000000000; |
|
|
1136 | |
|
|
1137 | ptr = ecb_i2a_x10 (ptr, u2); |
|
|
1138 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1139 | } |
|
|
1140 | else |
|
|
1141 | { |
|
|
1142 | uint64_t u1 = u % 1000000000; |
|
|
1143 | uint64_t ua = u / 1000000000; |
|
|
1144 | uint64_t u2 = ua % 1000000000; |
|
|
1145 | uint64_t u3 = ua / 1000000000; |
|
|
1146 | |
|
|
1147 | // 2**31 is 19 digits, so the top is exactly one digit |
|
|
1148 | *ptr++ = u3 + '0'; |
|
|
1149 | ptr = ecb_i2a_09 (ptr, u2); |
|
|
1150 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1151 | } |
|
|
1152 | #else |
|
|
1153 | ptr = ecb_i2a_u64 (ptr, u); |
|
|
1154 | #endif |
|
|
1155 | |
|
|
1156 | return ptr; |
|
|
1157 | } |
|
|
1158 | |
649 | /*******************************************************************************/ |
1159 | /*******************************************************************************/ |
650 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
1160 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
651 | |
1161 | |
652 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
1162 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
653 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
1163 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
654 | #if 0 \ |
1164 | #if 0 \ |
655 | || __i386 || __i386__ \ |
1165 | || __i386 || __i386__ \ |
656 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
1166 | || ECB_GCC_AMD64 \ |
657 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
1167 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
658 | || defined __s390__ || defined __s390x__ \ |
1168 | || defined __s390__ || defined __s390x__ \ |
659 | || defined __mips__ \ |
1169 | || defined __mips__ \ |
660 | || defined __alpha__ \ |
1170 | || defined __alpha__ \ |
661 | || defined __hppa__ \ |
1171 | || defined __hppa__ \ |
662 | || defined __ia64__ \ |
1172 | || defined __ia64__ \ |
663 | || defined __m68k__ \ |
1173 | || defined __m68k__ \ |
664 | || defined __m88k__ \ |
1174 | || defined __m88k__ \ |
665 | || defined __sh__ \ |
1175 | || defined __sh__ \ |
666 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ |
1176 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
667 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
1177 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
668 | || defined __aarch64__ |
1178 | || defined __aarch64__ |
669 | #define ECB_STDFP 1 |
1179 | #define ECB_STDFP 1 |
670 | #include <string.h> /* for memcpy */ |
|
|
671 | #else |
1180 | #else |
672 | #define ECB_STDFP 0 |
1181 | #define ECB_STDFP 0 |
673 | #endif |
1182 | #endif |
674 | |
1183 | |
675 | #ifndef ECB_NO_LIBM |
1184 | #ifndef ECB_NO_LIBM |
… | |
… | |
689 | #define ECB_NAN ECB_INFINITY |
1198 | #define ECB_NAN ECB_INFINITY |
690 | #endif |
1199 | #endif |
691 | |
1200 | |
692 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
1201 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
693 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
1202 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1203 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
694 | #else |
1204 | #else |
695 | #define ecb_ldexpf(x,e) (float) ldexp ((x), (e)) |
1205 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
|
|
1206 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
696 | #endif |
1207 | #endif |
697 | |
|
|
698 | /* converts an ieee half/binary16 to a float */ |
|
|
699 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
700 | ecb_function_ ecb_const float |
|
|
701 | ecb_binary16_to_float (uint16_t x) |
|
|
702 | { |
|
|
703 | int e = (x >> 10) & 0x1f; |
|
|
704 | int m = x & 0x3ff; |
|
|
705 | float r; |
|
|
706 | |
|
|
707 | if (!e ) r = ecb_ldexpf (m , -24); |
|
|
708 | else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25); |
|
|
709 | else if (m ) r = ECB_NAN; |
|
|
710 | else r = ECB_INFINITY; |
|
|
711 | |
|
|
712 | return x & 0x8000 ? -r : r; |
|
|
713 | } |
|
|
714 | |
1208 | |
715 | /* convert a float to ieee single/binary32 */ |
1209 | /* convert a float to ieee single/binary32 */ |
716 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
1210 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
717 | ecb_function_ ecb_const uint32_t |
1211 | ecb_function_ ecb_const uint32_t |
718 | ecb_float_to_binary32 (float x) |
1212 | ecb_float_to_binary32 (float x) |
… | |
… | |
729 | if (x == 0e0f ) return 0x00000000U; |
1223 | if (x == 0e0f ) return 0x00000000U; |
730 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
1224 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
731 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
1225 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
732 | if (x != x ) return 0x7fbfffffU; |
1226 | if (x != x ) return 0x7fbfffffU; |
733 | |
1227 | |
734 | m = frexpf (x, &e) * 0x1000000U; |
1228 | m = ecb_frexpf (x, &e) * 0x1000000U; |
735 | |
1229 | |
736 | r = m & 0x80000000U; |
1230 | r = m & 0x80000000U; |
737 | |
1231 | |
738 | if (r) |
1232 | if (r) |
739 | m = -m; |
1233 | m = -m; |
… | |
… | |
850 | #endif |
1344 | #endif |
851 | |
1345 | |
852 | return r; |
1346 | return r; |
853 | } |
1347 | } |
854 | |
1348 | |
855 | #endif |
1349 | /* convert a float to ieee half/binary16 */ |
|
|
1350 | ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x); |
|
|
1351 | ecb_function_ ecb_const uint16_t |
|
|
1352 | ecb_float_to_binary16 (float x) |
|
|
1353 | { |
|
|
1354 | return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x)); |
|
|
1355 | } |
856 | |
1356 | |
857 | #endif |
1357 | /* convert an ieee half/binary16 to float */ |
|
|
1358 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1359 | ecb_function_ ecb_const float |
|
|
1360 | ecb_binary16_to_float (uint16_t x) |
|
|
1361 | { |
|
|
1362 | return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
|
|
1363 | } |
858 | |
1364 | |
|
|
1365 | #endif |
|
|
1366 | |
|
|
1367 | #endif |
|
|
1368 | |