1 | /* |
1 | /* |
2 | * libecb - http://software.schmorp.de/pkg/libecb |
2 | * libecb - http://software.schmorp.de/pkg/libecb |
3 | * |
3 | * |
4 | * Copyright (©) 2009-2012 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: |
… | |
… | |
23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
26 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
26 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
27 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | * |
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29 | * Alternatively, the contents of this file may be used under the terms of |
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30 | * the GNU General Public License ("GPL") version 2 or any later version, |
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31 | * in which case the provisions of the GPL are applicable instead of |
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32 | * the above. If you wish to allow the use of your version of this file |
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33 | * only under the terms of the GPL and not to allow others to use your |
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34 | * version of this file under the BSD license, indicate your decision |
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35 | * by deleting the provisions above and replace them with the notice |
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36 | * and other provisions required by the GPL. If you do not delete the |
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37 | * provisions above, a recipient may use your version of this file under |
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38 | * either the BSD or the GPL. |
28 | */ |
39 | */ |
29 | |
40 | |
30 | #ifndef ECB_H |
41 | #ifndef ECB_H |
31 | #define ECB_H |
42 | #define ECB_H |
32 | |
43 | |
33 | #ifdef _WIN32 |
44 | /* 16 bits major, 16 bits minor */ |
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45 | #define ECB_VERSION 0x0001000a |
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46 | |
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47 | #include <string.h> /* for memcpy */ |
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48 | |
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49 | #if defined (_WIN32) && !defined (__MINGW32__) |
34 | typedef signed char int8_t; |
50 | typedef signed char int8_t; |
35 | 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; |
36 | typedef signed short int16_t; |
54 | typedef signed short int16_t; |
37 | 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; |
38 | typedef signed int int32_t; |
58 | typedef signed int int32_t; |
39 | 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; |
40 | #if __GNUC__ |
62 | #if __GNUC__ |
41 | typedef signed long long int64_t; |
63 | typedef signed long long int64_t; |
42 | typedef unsigned long long uint64_t; |
64 | typedef unsigned long long uint64_t; |
43 | #else /* _MSC_VER || __BORLANDC__ */ |
65 | #else /* _MSC_VER || __BORLANDC__ */ |
44 | typedef signed __int64 int64_t; |
66 | typedef signed __int64 int64_t; |
45 | typedef unsigned __int64 uint64_t; |
67 | typedef unsigned __int64 uint64_t; |
46 | #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; |
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71 | #ifdef _WIN64 |
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72 | #define ECB_PTRSIZE 8 |
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73 | typedef uint64_t uintptr_t; |
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74 | typedef int64_t intptr_t; |
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75 | #else |
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76 | #define ECB_PTRSIZE 4 |
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77 | typedef uint32_t uintptr_t; |
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78 | typedef int32_t intptr_t; |
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79 | #endif |
47 | #else |
80 | #else |
48 | #include <inttypes.h> |
81 | #include <inttypes.h> |
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82 | #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
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83 | #define ECB_PTRSIZE 8 |
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84 | #else |
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85 | #define ECB_PTRSIZE 4 |
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86 | #endif |
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87 | #endif |
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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 | |
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100 | /* work around x32 idiocy by defining proper macros */ |
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101 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
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102 | #if _ILP32 |
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103 | #define ECB_AMD64_X32 1 |
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104 | #else |
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105 | #define ECB_AMD64 1 |
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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 |
49 | #endif |
113 | #endif |
50 | |
114 | |
51 | /* many compilers define _GNUC_ to some versions but then only implement |
115 | /* many compilers define _GNUC_ to some versions but then only implement |
52 | * what their idiot authors think are the "more important" extensions, |
116 | * what their idiot authors think are the "more important" extensions, |
53 | * causing enormous grief in return for some better fake benchmark numbers. |
117 | * causing enormous grief in return for some better fake benchmark numbers. |
54 | * or so. |
118 | * or so. |
55 | * we try to detect these and simply assume they are not gcc - if they have |
119 | * we try to detect these and simply assume they are not gcc - if they have |
56 | * an issue with that they should have done it right in the first place. |
120 | * an issue with that they should have done it right in the first place. |
57 | */ |
121 | */ |
58 | #ifndef ECB_GCC_VERSION |
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59 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
122 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
60 | #define ECB_GCC_VERSION(major,minor) 0 |
123 | #define ECB_GCC_VERSION(major,minor) 0 |
61 | #else |
124 | #else |
62 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
125 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
63 | #endif |
126 | #endif |
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127 | |
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128 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
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129 | |
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130 | #if __clang__ && defined __has_builtin |
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131 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
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132 | #else |
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133 | #define ECB_CLANG_BUILTIN(x) 0 |
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134 | #endif |
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135 | |
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136 | #if __clang__ && defined __has_extension |
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137 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
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138 | #else |
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139 | #define ECB_CLANG_EXTENSION(x) 0 |
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140 | #endif |
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141 | |
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142 | #define ECB_CPP (__cplusplus+0) |
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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) |
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146 | |
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147 | #if ECB_CPP |
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148 | #define ECB_C 0 |
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149 | #define ECB_STDC_VERSION 0 |
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150 | #else |
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151 | #define ECB_C 1 |
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152 | #define ECB_STDC_VERSION __STDC_VERSION__ |
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153 | #endif |
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154 | |
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155 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
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156 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
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157 | #define ECB_C17 (ECB_STDC_VERSION >= 201710L) |
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158 | |
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159 | #if ECB_CPP |
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160 | #define ECB_EXTERN_C extern "C" |
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161 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
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162 | #define ECB_EXTERN_C_END } |
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163 | #else |
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164 | #define ECB_EXTERN_C extern |
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165 | #define ECB_EXTERN_C_BEG |
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166 | #define ECB_EXTERN_C_END |
64 | #endif |
167 | #endif |
65 | |
168 | |
66 | /*****************************************************************************/ |
169 | /*****************************************************************************/ |
67 | |
170 | |
68 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
171 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
69 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
172 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
70 | |
173 | |
71 | #if ECB_NO_THREADS |
174 | #if ECB_NO_THREADS |
72 | # define ECB_NO_SMP 1 |
175 | #define ECB_NO_SMP 1 |
73 | #endif |
176 | #endif |
74 | |
177 | |
75 | #if ECB_NO_THREADS || ECB_NO_SMP |
178 | #if ECB_NO_SMP |
76 | #define ECB_MEMORY_FENCE do { } while (0) |
179 | #define ECB_MEMORY_FENCE do { } while (0) |
77 | #endif |
180 | #endif |
78 | |
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 | |
79 | #ifndef ECB_MEMORY_FENCE |
191 | #ifndef ECB_MEMORY_FENCE |
80 | #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") |
81 | #if __i386 || __i386__ |
194 | #if __i386 || __i386__ |
82 | #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") |
83 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
196 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
84 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
197 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
85 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
198 | #elif ECB_GCC_AMD64 |
86 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
199 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
87 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
200 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
88 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
201 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
89 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
202 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
90 | #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 */ |
91 | #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ |
211 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
92 | || 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__ |
93 | #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") |
94 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
215 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
95 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
216 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
96 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
217 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
97 | #elif __sparc || __sparc__ |
218 | #elif __aarch64__ |
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219 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
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220 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
98 | #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") |
99 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
222 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
100 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
223 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
101 | #elif defined(__s390__) || defined(__s390x__) |
224 | #elif defined __s390__ || defined __s390x__ |
102 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
225 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
103 | #elif defined(__mips__) |
226 | #elif defined __mips__ |
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227 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
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228 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
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229 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
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230 | #elif defined __alpha__ |
104 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
231 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
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232 | #elif defined __hppa__ |
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233 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
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234 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
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235 | #elif defined __ia64__ |
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236 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
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237 | #elif defined __m68k__ |
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238 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
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239 | #elif defined __m88k__ |
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240 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
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241 | #elif defined __sh__ |
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242 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
105 | #endif |
243 | #endif |
106 | #endif |
244 | #endif |
107 | #endif |
245 | #endif |
108 | |
246 | |
109 | #ifndef ECB_MEMORY_FENCE |
247 | #ifndef ECB_MEMORY_FENCE |
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248 | #if ECB_GCC_VERSION(4,7) |
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249 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
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250 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
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251 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
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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) |
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255 | |
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256 | #elif ECB_CLANG_EXTENSION(c_atomic) |
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257 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
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258 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
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259 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
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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) |
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263 | |
110 | #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) |
264 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
111 | #define ECB_MEMORY_FENCE __sync_synchronize () |
265 | #define ECB_MEMORY_FENCE __sync_synchronize () |
112 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
266 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
113 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
267 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
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268 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
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269 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
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270 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
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271 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
114 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
272 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
115 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
273 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
116 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
274 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
117 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
275 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
118 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
276 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
119 | #elif defined(_WIN32) |
277 | #elif defined _WIN32 |
120 | #include <WinNT.h> |
278 | #include <WinNT.h> |
121 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
279 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
122 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
280 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
123 | #include <mbarrier.h> |
281 | #include <mbarrier.h> |
124 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
282 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
125 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
283 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier () |
126 | #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 () |
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286 | #elif __xlC__ |
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287 | #define ECB_MEMORY_FENCE __sync () |
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288 | #endif |
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289 | #endif |
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290 | |
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291 | #ifndef ECB_MEMORY_FENCE |
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292 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
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293 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
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294 | /* not just C11 atomics and atomic accesses */ |
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295 | #include <stdatomic.h> |
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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) |
127 | #endif |
299 | #endif |
128 | #endif |
300 | #endif |
129 | |
301 | |
130 | #ifndef ECB_MEMORY_FENCE |
302 | #ifndef ECB_MEMORY_FENCE |
131 | #if !ECB_AVOID_PTHREADS |
303 | #if !ECB_AVOID_PTHREADS |
… | |
… | |
143 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
315 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
144 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
316 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
145 | #endif |
317 | #endif |
146 | #endif |
318 | #endif |
147 | |
319 | |
148 | #if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) |
320 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
149 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
321 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
150 | #endif |
322 | #endif |
151 | |
323 | |
152 | #if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) |
324 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
153 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
325 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
154 | #endif |
326 | #endif |
155 | |
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 | |
156 | /*****************************************************************************/ |
332 | /*****************************************************************************/ |
157 | |
333 | |
158 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
334 | #if ECB_CPP |
159 | |
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160 | #if __cplusplus |
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161 | #define ecb_inline static inline |
335 | #define ecb_inline static inline |
162 | #elif ECB_GCC_VERSION(2,5) |
336 | #elif ECB_GCC_VERSION(2,5) |
163 | #define ecb_inline static __inline__ |
337 | #define ecb_inline static __inline__ |
164 | #elif ECB_C99 |
338 | #elif ECB_C99 |
165 | #define ecb_inline static inline |
339 | #define ecb_inline static inline |
… | |
… | |
179 | |
353 | |
180 | #define ECB_CONCAT_(a, b) a ## b |
354 | #define ECB_CONCAT_(a, b) a ## b |
181 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
355 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
182 | #define ECB_STRINGIFY_(a) # a |
356 | #define ECB_STRINGIFY_(a) # a |
183 | #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)) |
184 | |
359 | |
185 | #define ecb_function_ ecb_inline |
360 | #define ecb_function_ ecb_inline |
186 | |
361 | |
187 | #if ECB_GCC_VERSION(3,1) |
362 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
188 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
363 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
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364 | #else |
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365 | #define ecb_attribute(attrlist) |
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366 | #endif |
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367 | |
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368 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
189 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
369 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
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370 | #else |
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371 | /* possible C11 impl for integral types |
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372 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
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373 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
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374 | |
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375 | #define ecb_is_constant(expr) 0 |
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376 | #endif |
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377 | |
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378 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
190 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
379 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
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380 | #else |
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381 | #define ecb_expect(expr,value) (expr) |
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382 | #endif |
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383 | |
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384 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
191 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
385 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
192 | #else |
386 | #else |
193 | #define ecb_attribute(attrlist) |
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194 | #define ecb_is_constant(expr) 0 |
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195 | #define ecb_expect(expr,value) (expr) |
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196 | #define ecb_prefetch(addr,rw,locality) |
387 | #define ecb_prefetch(addr,rw,locality) |
197 | #endif |
388 | #endif |
198 | |
389 | |
199 | /* no emulation for ecb_decltype */ |
390 | /* no emulation for ecb_decltype */ |
200 | #if ECB_GCC_VERSION(4,5) |
391 | #if ECB_CPP11 |
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392 | // older implementations might have problems with decltype(x)::type, work around it |
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393 | template<class T> struct ecb_decltype_t { typedef T type; }; |
201 | #define ecb_decltype(x) __decltype(x) |
394 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
202 | #elif ECB_GCC_VERSION(3,0) |
395 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
203 | #define ecb_decltype(x) __typeof(x) |
396 | #define ecb_decltype(x) __typeof__ (x) |
204 | #endif |
397 | #endif |
205 | |
398 | |
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399 | #if _MSC_VER >= 1300 |
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400 | #define ecb_deprecated __declspec (deprecated) |
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401 | #else |
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402 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
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403 | #endif |
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404 | |
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405 | #if _MSC_VER >= 1500 |
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406 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
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407 | #elif ECB_GCC_VERSION(4,5) |
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408 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
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409 | #else |
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410 | #define ecb_deprecated_message(msg) ecb_deprecated |
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411 | #endif |
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412 | |
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413 | #if _MSC_VER >= 1400 |
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414 | #define ecb_noinline __declspec (noinline) |
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415 | #else |
206 | #define ecb_noinline ecb_attribute ((__noinline__)) |
416 | #define ecb_noinline ecb_attribute ((__noinline__)) |
207 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
417 | #endif |
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418 | |
208 | #define ecb_unused ecb_attribute ((__unused__)) |
419 | #define ecb_unused ecb_attribute ((__unused__)) |
209 | #define ecb_const ecb_attribute ((__const__)) |
420 | #define ecb_const ecb_attribute ((__const__)) |
210 | #define ecb_pure ecb_attribute ((__pure__)) |
421 | #define ecb_pure ecb_attribute ((__pure__)) |
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422 | |
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423 | #if ECB_C11 || __IBMC_NORETURN |
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424 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ |
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425 | #define ecb_noreturn _Noreturn |
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426 | #elif ECB_CPP11 |
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427 | #define ecb_noreturn [[noreturn]] |
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428 | #elif _MSC_VER >= 1200 |
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429 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ |
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430 | #define ecb_noreturn __declspec (noreturn) |
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431 | #else |
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432 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
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433 | #endif |
211 | |
434 | |
212 | #if ECB_GCC_VERSION(4,3) |
435 | #if ECB_GCC_VERSION(4,3) |
213 | #define ecb_artificial ecb_attribute ((__artificial__)) |
436 | #define ecb_artificial ecb_attribute ((__artificial__)) |
214 | #define ecb_hot ecb_attribute ((__hot__)) |
437 | #define ecb_hot ecb_attribute ((__hot__)) |
215 | #define ecb_cold ecb_attribute ((__cold__)) |
438 | #define ecb_cold ecb_attribute ((__cold__)) |
… | |
… | |
227 | /* for compatibility to the rest of the world */ |
450 | /* for compatibility to the rest of the world */ |
228 | #define ecb_likely(expr) ecb_expect_true (expr) |
451 | #define ecb_likely(expr) ecb_expect_true (expr) |
229 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
452 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
230 | |
453 | |
231 | /* count trailing zero bits and count # of one bits */ |
454 | /* count trailing zero bits and count # of one bits */ |
232 | #if ECB_GCC_VERSION(3,4) |
455 | #if ECB_GCC_VERSION(3,4) \ |
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456 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
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457 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
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458 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
233 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
459 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
234 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
460 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
235 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
461 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
236 | #define ecb_ctz32(x) __builtin_ctz (x) |
462 | #define ecb_ctz32(x) __builtin_ctz (x) |
237 | #define ecb_ctz64(x) __builtin_ctzll (x) |
463 | #define ecb_ctz64(x) __builtin_ctzll (x) |
238 | #define ecb_popcount32(x) __builtin_popcount (x) |
464 | #define ecb_popcount32(x) __builtin_popcount (x) |
239 | /* no popcountll */ |
465 | /* no popcountll */ |
240 | #else |
466 | #else |
241 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
467 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
242 | ecb_function_ int |
468 | ecb_function_ ecb_const int |
243 | ecb_ctz32 (uint32_t x) |
469 | ecb_ctz32 (uint32_t x) |
244 | { |
470 | { |
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471 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
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472 | unsigned long r; |
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473 | _BitScanForward (&r, x); |
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474 | return (int)r; |
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475 | #else |
245 | int r = 0; |
476 | int r = 0; |
246 | |
477 | |
247 | x &= ~x + 1; /* this isolates the lowest bit */ |
478 | x &= ~x + 1; /* this isolates the lowest bit */ |
248 | |
479 | |
249 | #if ECB_branchless_on_i386 |
480 | #if ECB_branchless_on_i386 |
… | |
… | |
259 | if (x & 0xff00ff00) r += 8; |
490 | if (x & 0xff00ff00) r += 8; |
260 | if (x & 0xffff0000) r += 16; |
491 | if (x & 0xffff0000) r += 16; |
261 | #endif |
492 | #endif |
262 | |
493 | |
263 | return r; |
494 | return r; |
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495 | #endif |
264 | } |
496 | } |
265 | |
497 | |
266 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
498 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
267 | ecb_function_ int |
499 | ecb_function_ ecb_const int |
268 | ecb_ctz64 (uint64_t x) |
500 | ecb_ctz64 (uint64_t x) |
269 | { |
501 | { |
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502 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
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503 | unsigned long r; |
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504 | _BitScanForward64 (&r, x); |
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505 | return (int)r; |
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506 | #else |
270 | int shift = x & 0xffffffffU ? 0 : 32; |
507 | int shift = x & 0xffffffff ? 0 : 32; |
271 | return ecb_ctz32 (x >> shift) + shift; |
508 | return ecb_ctz32 (x >> shift) + shift; |
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509 | #endif |
272 | } |
510 | } |
273 | |
511 | |
274 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
512 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
275 | ecb_function_ int |
513 | ecb_function_ ecb_const int |
276 | ecb_popcount32 (uint32_t x) |
514 | ecb_popcount32 (uint32_t x) |
277 | { |
515 | { |
278 | x -= (x >> 1) & 0x55555555; |
516 | x -= (x >> 1) & 0x55555555; |
279 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
517 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
280 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
518 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
281 | x *= 0x01010101; |
519 | x *= 0x01010101; |
282 | |
520 | |
283 | return x >> 24; |
521 | return x >> 24; |
284 | } |
522 | } |
285 | |
523 | |
286 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
524 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
287 | ecb_function_ int ecb_ld32 (uint32_t x) |
525 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
288 | { |
526 | { |
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527 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
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528 | unsigned long r; |
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529 | _BitScanReverse (&r, x); |
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530 | return (int)r; |
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531 | #else |
289 | int r = 0; |
532 | int r = 0; |
290 | |
533 | |
291 | if (x >> 16) { x >>= 16; r += 16; } |
534 | if (x >> 16) { x >>= 16; r += 16; } |
292 | if (x >> 8) { x >>= 8; r += 8; } |
535 | if (x >> 8) { x >>= 8; r += 8; } |
293 | if (x >> 4) { x >>= 4; r += 4; } |
536 | if (x >> 4) { x >>= 4; r += 4; } |
294 | if (x >> 2) { x >>= 2; r += 2; } |
537 | if (x >> 2) { x >>= 2; r += 2; } |
295 | if (x >> 1) { r += 1; } |
538 | if (x >> 1) { r += 1; } |
296 | |
539 | |
297 | return r; |
540 | return r; |
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541 | #endif |
298 | } |
542 | } |
299 | |
543 | |
300 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
544 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
301 | ecb_function_ int ecb_ld64 (uint64_t x) |
545 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
302 | { |
546 | { |
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547 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
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548 | unsigned long r; |
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549 | _BitScanReverse64 (&r, x); |
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550 | return (int)r; |
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551 | #else |
303 | int r = 0; |
552 | int r = 0; |
304 | |
553 | |
305 | if (x >> 32) { x >>= 32; r += 32; } |
554 | if (x >> 32) { x >>= 32; r += 32; } |
306 | |
555 | |
307 | return r + ecb_ld32 (x); |
556 | return r + ecb_ld32 (x); |
308 | } |
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309 | #endif |
557 | #endif |
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558 | } |
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559 | #endif |
310 | |
560 | |
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561 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
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562 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
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563 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
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564 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
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565 | |
311 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
566 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
312 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
567 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
313 | { |
568 | { |
314 | return ( (x * 0x0802U & 0x22110U) |
569 | return ( (x * 0x0802U & 0x22110U) |
315 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
570 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
316 | } |
571 | } |
317 | |
572 | |
318 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
573 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
319 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
574 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
320 | { |
575 | { |
321 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
576 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
322 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
577 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
323 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
578 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
324 | x = ( x >> 8 ) | ( x << 8); |
579 | x = ( x >> 8 ) | ( x << 8); |
325 | |
580 | |
326 | return x; |
581 | return x; |
327 | } |
582 | } |
328 | |
583 | |
329 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
584 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
330 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
585 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
331 | { |
586 | { |
332 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
587 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
333 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
588 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
334 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
589 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
335 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
590 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
… | |
… | |
338 | return x; |
593 | return x; |
339 | } |
594 | } |
340 | |
595 | |
341 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
596 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
342 | /* so for this version we are lazy */ |
597 | /* so for this version we are lazy */ |
343 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
598 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
344 | ecb_function_ int |
599 | ecb_function_ ecb_const int |
345 | ecb_popcount64 (uint64_t x) |
600 | ecb_popcount64 (uint64_t x) |
346 | { |
601 | { |
347 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
602 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
348 | } |
603 | } |
349 | |
604 | |
350 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
605 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
351 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
606 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
352 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
607 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
353 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
608 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
354 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
609 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
355 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
610 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
356 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
611 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
357 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
612 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
358 | |
613 | |
359 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
614 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> (-count & 7)) | (x << (count & 7)); } |
360 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
615 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << (-count & 7)) | (x >> (count & 7)); } |
361 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
616 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (-count & 15)) | (x << (count & 15)); } |
362 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
617 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (-count & 15)) | (x >> (count & 15)); } |
363 | ecb_inline 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 >> (-count & 31)) | (x << (count & 31)); } |
364 | ecb_inline 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 << (-count & 31)) | (x >> (count & 31)); } |
365 | ecb_inline 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 >> (-count & 63)) | (x << (count & 63)); } |
366 | ecb_inline 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 << (-count & 63)) | (x >> (count & 63)); } |
367 | |
622 | |
368 | #if ECB_GCC_VERSION(4,3) |
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 | |
|
|
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 |
369 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
665 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
666 | #endif |
370 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
667 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
371 | #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))) |
372 | #else |
674 | #else |
373 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
675 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
374 | ecb_function_ uint16_t |
676 | ecb_function_ ecb_const uint16_t |
375 | ecb_bswap16 (uint16_t x) |
677 | ecb_bswap16 (uint16_t x) |
376 | { |
678 | { |
377 | return ecb_rotl16 (x, 8); |
679 | return ecb_rotl16 (x, 8); |
378 | } |
680 | } |
379 | |
681 | |
380 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
682 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
381 | ecb_function_ uint32_t |
683 | ecb_function_ ecb_const uint32_t |
382 | ecb_bswap32 (uint32_t x) |
684 | ecb_bswap32 (uint32_t x) |
383 | { |
685 | { |
384 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
686 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
385 | } |
687 | } |
386 | |
688 | |
387 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
689 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
388 | ecb_function_ uint64_t |
690 | ecb_function_ ecb_const uint64_t |
389 | ecb_bswap64 (uint64_t x) |
691 | ecb_bswap64 (uint64_t x) |
390 | { |
692 | { |
391 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
693 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
392 | } |
694 | } |
393 | #endif |
695 | #endif |
394 | |
696 | |
395 | #if ECB_GCC_VERSION(4,5) |
697 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
396 | #define ecb_unreachable() __builtin_unreachable () |
698 | #define ecb_unreachable() __builtin_unreachable () |
397 | #else |
699 | #else |
398 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
700 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
399 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
701 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
400 | ecb_inline void ecb_unreachable (void) { } |
702 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
401 | #endif |
703 | #endif |
402 | |
704 | |
403 | /* try to tell the compiler that some condition is definitely true */ |
705 | /* try to tell the compiler that some condition is definitely true */ |
404 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
706 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
405 | |
707 | |
406 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
708 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
407 | ecb_inline unsigned char |
709 | ecb_inline ecb_const uint32_t |
408 | ecb_byteorder_helper (void) |
710 | ecb_byteorder_helper (void) |
409 | { |
711 | { |
410 | const uint32_t u = 0x11223344; |
712 | /* the union code still generates code under pressure in gcc, */ |
411 | return *(unsigned char *)&u; |
713 | /* but less than using pointers, and always seems to */ |
|
|
714 | /* successfully return a constant. */ |
|
|
715 | /* the reason why we have this horrible preprocessor mess */ |
|
|
716 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
717 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
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 |
|
|
721 | return 0x44332211; |
|
|
722 | #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
|
|
723 | || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
|
|
724 | #define ECB_BIG_ENDIAN 1 |
|
|
725 | return 0x11223344; |
|
|
726 | #else |
|
|
727 | union |
|
|
728 | { |
|
|
729 | uint8_t c[4]; |
|
|
730 | uint32_t u; |
|
|
731 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
|
|
732 | return u.u; |
|
|
733 | #endif |
412 | } |
734 | } |
413 | |
735 | |
414 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
736 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
415 | ecb_inline 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; } |
416 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
738 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
417 | ecb_inline 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 | /* pointer/integer hashing */ |
|
|
813 | |
|
|
814 | /* based on hash by Chris Wellons, https://nullprogram.com/blog/2018/07/31/ */ |
|
|
815 | ecb_function_ uint32_t ecb_mix32 (uint32_t v); |
|
|
816 | ecb_function_ uint32_t ecb_mix32 (uint32_t v) |
|
|
817 | { |
|
|
818 | v ^= v >> 16; v *= 0x7feb352dU; |
|
|
819 | v ^= v >> 15; v *= 0x846ca68bU; |
|
|
820 | v ^= v >> 16; |
|
|
821 | return v; |
|
|
822 | } |
|
|
823 | |
|
|
824 | ecb_function_ uint32_t ecb_unmix32 (uint32_t v); |
|
|
825 | ecb_function_ uint32_t ecb_unmix32 (uint32_t v) |
|
|
826 | { |
|
|
827 | v ^= v >> 16 ; v *= 0x43021123U; |
|
|
828 | v ^= v >> 15 ^ v >> 30; v *= 0x1d69e2a5U; |
|
|
829 | v ^= v >> 16 ; |
|
|
830 | return v; |
|
|
831 | } |
|
|
832 | |
|
|
833 | /* based on splitmix64, by Sebastiona Vigna, https://prng.di.unimi.it/splitmix64.c */ |
|
|
834 | ecb_function_ uint64_t ecb_mix64 (uint64_t v); |
|
|
835 | ecb_function_ uint64_t ecb_mix64 (uint64_t v) |
|
|
836 | { |
|
|
837 | v ^= v >> 30; v *= 0xbf58476d1ce4e5b9U; |
|
|
838 | v ^= v >> 27; v *= 0x94d049bb133111ebU; |
|
|
839 | v ^= v >> 31; |
|
|
840 | return v; |
|
|
841 | } |
|
|
842 | |
|
|
843 | ecb_function_ uint64_t ecb_unmix64 (uint64_t v); |
|
|
844 | ecb_function_ uint64_t ecb_unmix64 (uint64_t v) |
|
|
845 | { |
|
|
846 | v ^= v >> 31 ^ v >> 62; v *= 0x319642b2d24d8ec3U; |
|
|
847 | v ^= v >> 27 ^ v >> 54; v *= 0x96de1b173f119089U; |
|
|
848 | v ^= v >> 30 ^ v >> 60; |
|
|
849 | return v; |
|
|
850 | } |
|
|
851 | |
|
|
852 | ecb_function_ uintptr_t ecb_ptrmix (void *p); |
|
|
853 | ecb_function_ uintptr_t ecb_ptrmix (void *p) |
|
|
854 | { |
|
|
855 | #if ECB_PTRSIZE <= 4 |
|
|
856 | return ecb_mix32 ((uint32_t)p); |
|
|
857 | #else |
|
|
858 | return ecb_mix64 ((uint64_t)p); |
|
|
859 | #endif |
|
|
860 | } |
|
|
861 | |
|
|
862 | ecb_function_ void *ecb_ptrunmix (uintptr_t v); |
|
|
863 | ecb_function_ void *ecb_ptrunmix (uintptr_t v) |
|
|
864 | { |
|
|
865 | #if ECB_PTRSIZE <= 4 |
|
|
866 | return (void *)ecb_unmix32 (v); |
|
|
867 | #else |
|
|
868 | return (void *)ecb_unmix64 (v); |
|
|
869 | #endif |
|
|
870 | } |
|
|
871 | |
|
|
872 | #if ECB_CPP |
|
|
873 | |
|
|
874 | template<typename T> |
|
|
875 | inline uintptr_t ecb_ptrmix (T *p) |
|
|
876 | { |
|
|
877 | return ecb_ptrmix (static_cast<void *>(p)); |
|
|
878 | } |
|
|
879 | |
|
|
880 | template<typename T> |
|
|
881 | inline T *ecb_ptrunmix (uintptr_t v) |
|
|
882 | { |
|
|
883 | return static_cast<T *>(ecb_ptrunmix (v)); |
|
|
884 | } |
|
|
885 | |
|
|
886 | #endif |
|
|
887 | |
|
|
888 | /*****************************************************************************/ |
|
|
889 | /* division */ |
418 | |
890 | |
419 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
891 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
892 | /* C99 tightened the definition of %, so we can use a more efficient version */ |
420 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
893 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
421 | #else |
894 | #else |
422 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
895 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
423 | #endif |
896 | #endif |
424 | |
897 | |
425 | #if __cplusplus |
898 | #if ECB_CPP |
426 | template<typename T> |
899 | template<typename T> |
427 | static inline T ecb_div_rd (T val, T div) |
900 | static inline T ecb_div_rd (T val, T div) |
428 | { |
901 | { |
429 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
902 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
430 | } |
903 | } |
… | |
… | |
435 | } |
908 | } |
436 | #else |
909 | #else |
437 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
910 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
438 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
911 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
439 | #endif |
912 | #endif |
|
|
913 | |
|
|
914 | /*****************************************************************************/ |
|
|
915 | /* array length */ |
440 | |
916 | |
441 | #if ecb_cplusplus_does_not_suck |
917 | #if ecb_cplusplus_does_not_suck |
442 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
918 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
443 | template<typename T, int N> |
919 | template<typename T, int N> |
444 | static inline int ecb_array_length (const T (&arr)[N]) |
920 | static inline int ecb_array_length (const T (&arr)[N]) |
… | |
… | |
447 | } |
923 | } |
448 | #else |
924 | #else |
449 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
925 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
450 | #endif |
926 | #endif |
451 | |
927 | |
|
|
928 | /*****************************************************************************/ |
|
|
929 | /* IEEE 754-2008 half float conversions */ |
|
|
930 | |
|
|
931 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
|
|
932 | ecb_function_ ecb_const uint32_t |
|
|
933 | ecb_binary16_to_binary32 (uint32_t x) |
|
|
934 | { |
|
|
935 | unsigned int s = (x & 0x8000) << (31 - 15); |
|
|
936 | int e = (x >> 10) & 0x001f; |
|
|
937 | unsigned int m = x & 0x03ff; |
|
|
938 | |
|
|
939 | if (ecb_expect_false (e == 31)) |
|
|
940 | /* infinity or NaN */ |
|
|
941 | e = 255 - (127 - 15); |
|
|
942 | else if (ecb_expect_false (!e)) |
|
|
943 | { |
|
|
944 | if (ecb_expect_true (!m)) |
|
|
945 | /* zero, handled by code below by forcing e to 0 */ |
|
|
946 | e = 0 - (127 - 15); |
|
|
947 | else |
|
|
948 | { |
|
|
949 | /* subnormal, renormalise */ |
|
|
950 | unsigned int s = 10 - ecb_ld32 (m); |
|
|
951 | |
|
|
952 | m = (m << s) & 0x3ff; /* mask implicit bit */ |
|
|
953 | e -= s - 1; |
|
|
954 | } |
|
|
955 | } |
|
|
956 | |
|
|
957 | /* e and m now are normalised, or zero, (or inf or nan) */ |
|
|
958 | e += 127 - 15; |
|
|
959 | |
|
|
960 | return s | (e << 23) | (m << (23 - 10)); |
|
|
961 | } |
|
|
962 | |
|
|
963 | ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
|
|
964 | ecb_function_ ecb_const uint16_t |
|
|
965 | ecb_binary32_to_binary16 (uint32_t x) |
|
|
966 | { |
|
|
967 | unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */ |
|
|
968 | int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */ |
|
|
969 | unsigned int m = x & 0x007fffff; |
|
|
970 | |
|
|
971 | x &= 0x7fffffff; |
|
|
972 | |
|
|
973 | /* if it's within range of binary16 normals, use fast path */ |
|
|
974 | if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff)) |
|
|
975 | { |
|
|
976 | /* mantissa round-to-even */ |
|
|
977 | m += 0x00000fff + ((m >> (23 - 10)) & 1); |
|
|
978 | |
|
|
979 | /* handle overflow */ |
|
|
980 | if (ecb_expect_false (m >= 0x00800000)) |
|
|
981 | { |
|
|
982 | m >>= 1; |
|
|
983 | e += 1; |
|
|
984 | } |
|
|
985 | |
|
|
986 | return s | (e << 10) | (m >> (23 - 10)); |
|
|
987 | } |
|
|
988 | |
|
|
989 | /* handle large numbers and infinity */ |
|
|
990 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
|
|
991 | return s | 0x7c00; |
|
|
992 | |
|
|
993 | /* handle zero, subnormals and small numbers */ |
|
|
994 | if (ecb_expect_true (x < 0x38800000)) |
|
|
995 | { |
|
|
996 | /* zero */ |
|
|
997 | if (ecb_expect_true (!x)) |
|
|
998 | return s; |
|
|
999 | |
|
|
1000 | /* handle subnormals */ |
|
|
1001 | |
|
|
1002 | /* too small, will be zero */ |
|
|
1003 | if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
|
|
1004 | return s; |
|
|
1005 | |
|
|
1006 | m |= 0x00800000; /* make implicit bit explicit */ |
|
|
1007 | |
|
|
1008 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
|
|
1009 | { |
|
|
1010 | unsigned int bits = 14 - e; |
|
|
1011 | unsigned int half = (1 << (bits - 1)) - 1; |
|
|
1012 | unsigned int even = (m >> bits) & 1; |
|
|
1013 | |
|
|
1014 | /* if this overflows, we will end up with a normalised number */ |
|
|
1015 | m = (m + half + even) >> bits; |
|
|
1016 | } |
|
|
1017 | |
|
|
1018 | return s | m; |
|
|
1019 | } |
|
|
1020 | |
|
|
1021 | /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */ |
|
|
1022 | m >>= 13; |
|
|
1023 | |
|
|
1024 | return s | 0x7c00 | m | !m; |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | /*******************************************************************************/ |
|
|
1028 | /* fast integer to ascii */ |
|
|
1029 | |
|
|
1030 | /* |
|
|
1031 | * This code is pretty complicated because it is general. The idea behind it, |
|
|
1032 | * however, is pretty simple: first, the number is multiplied with a scaling |
|
|
1033 | * factor (2**bits / 10**(digits-1)) to convert the integer into a fixed-point |
|
|
1034 | * number with the first digit in the upper bits. |
|
|
1035 | * Then this digit is converted to text and masked out. The resulting number |
|
|
1036 | * is then multiplied by 10, by multiplying the fixed point representation |
|
|
1037 | * by 5 and shifting the (binary) decimal point one to the right, so a 4.28 |
|
|
1038 | * format becomes 5.27, 6.26 and so on. |
|
|
1039 | * The rest involves only advancing the pointer if we already generated a |
|
|
1040 | * non-zero digit, so leading zeroes are overwritten. |
|
|
1041 | */ |
|
|
1042 | |
|
|
1043 | // simply return a mask with "bits" bits set |
|
|
1044 | #define ecb_i2a_mask(type,bits) ((((type)1) << (bits)) - 1) |
|
|
1045 | |
|
|
1046 | // oputput a single digit. maskvalue is 10**digitidx |
|
|
1047 | #define ecb_i2a_digit(type,bits,digitmask,maskvalue,digitidx) \ |
|
|
1048 | if (digitmask >= maskvalue) /* constant, used to decide how many digits to generate */ \ |
|
|
1049 | { \ |
|
|
1050 | char digit = x >> (bits - digitidx); /* calculate the topmost digit */ \ |
|
|
1051 | *ptr = digit + '0'; /* output it */ \ |
|
|
1052 | nz = (digitmask == maskvalue) || nz || digit; /* first term == always output last digit */ \ |
|
|
1053 | ptr += nz; /* output digit only if non-zero digit seen */ \ |
|
|
1054 | x = (x & ecb_i2a_mask (type, bits - digitidx)) * 5; /* *10, but shift decimal point right */ \ |
|
|
1055 | } |
|
|
1056 | |
|
|
1057 | // convert integer to fixed point format and multiply out digits, highest first |
|
|
1058 | // requires magic constants: max. digits and number of bits after the decimal point |
|
|
1059 | #define ecb_i2a_def(suffix,ptr,v,type,bits,digitmask,lz) \ |
|
|
1060 | ecb_inline char *ecb_i2a_ ## suffix (char *ptr, uint32_t u) \ |
|
|
1061 | { \ |
|
|
1062 | char nz = lz; /* non-zero digit seen? */ \ |
|
|
1063 | /* convert to x.bits fixed-point */ \ |
|
|
1064 | type x = u * ((ecb_i2a_mask (type, bits) + digitmask) / digitmask); \ |
|
|
1065 | /* output up to 10 digits */ \ |
|
|
1066 | ecb_i2a_digit (type,bits,digitmask, 1, 0); \ |
|
|
1067 | ecb_i2a_digit (type,bits,digitmask, 10, 1); \ |
|
|
1068 | ecb_i2a_digit (type,bits,digitmask, 100, 2); \ |
|
|
1069 | ecb_i2a_digit (type,bits,digitmask, 1000, 3); \ |
|
|
1070 | ecb_i2a_digit (type,bits,digitmask, 10000, 4); \ |
|
|
1071 | ecb_i2a_digit (type,bits,digitmask, 100000, 5); \ |
|
|
1072 | ecb_i2a_digit (type,bits,digitmask, 1000000, 6); \ |
|
|
1073 | ecb_i2a_digit (type,bits,digitmask, 10000000, 7); \ |
|
|
1074 | ecb_i2a_digit (type,bits,digitmask, 100000000, 8); \ |
|
|
1075 | ecb_i2a_digit (type,bits,digitmask, 1000000000, 9); \ |
|
|
1076 | return ptr; \ |
|
|
1077 | } |
|
|
1078 | |
|
|
1079 | // predefined versions of the above, for various digits |
|
|
1080 | // ecb_i2a_xN = almost N digits, limit defined by macro |
|
|
1081 | // ecb_i2a_N = up to N digits, leading zeroes suppressed |
|
|
1082 | // ecb_i2a_0N = exactly N digits, including leading zeroes |
|
|
1083 | |
|
|
1084 | // non-leading-zero versions, limited range |
|
|
1085 | #define ECB_I2A_MAX_X5 59074 // limit for ecb_i2a_x5 |
|
|
1086 | #define ECB_I2A_MAX_X10 2932500665 // limit for ecb_i2a_x10 |
|
|
1087 | ecb_i2a_def ( x5, ptr, v, uint32_t, 26, 10000, 0) |
|
|
1088 | ecb_i2a_def (x10, ptr, v, uint64_t, 60, 1000000000, 0) |
|
|
1089 | |
|
|
1090 | // non-leading zero versions, all digits, 4 and 9 are optimal for 32/64 bit |
|
|
1091 | ecb_i2a_def ( 2, ptr, v, uint32_t, 10, 10, 0) |
|
|
1092 | ecb_i2a_def ( 3, ptr, v, uint32_t, 12, 100, 0) |
|
|
1093 | ecb_i2a_def ( 4, ptr, v, uint32_t, 26, 1000, 0) |
|
|
1094 | ecb_i2a_def ( 5, ptr, v, uint64_t, 30, 10000, 0) |
|
|
1095 | ecb_i2a_def ( 6, ptr, v, uint64_t, 36, 100000, 0) |
|
|
1096 | ecb_i2a_def ( 7, ptr, v, uint64_t, 44, 1000000, 0) |
|
|
1097 | ecb_i2a_def ( 8, ptr, v, uint64_t, 50, 10000000, 0) |
|
|
1098 | ecb_i2a_def ( 9, ptr, v, uint64_t, 56, 100000000, 0) |
|
|
1099 | |
|
|
1100 | // leading-zero versions, all digits, 04 and 09 are optimal for 32/64 bit |
|
|
1101 | ecb_i2a_def (02, ptr, v, uint32_t, 10, 10, 1) |
|
|
1102 | ecb_i2a_def (03, ptr, v, uint32_t, 12, 100, 1) |
|
|
1103 | ecb_i2a_def (04, ptr, v, uint32_t, 26, 1000, 1) |
|
|
1104 | ecb_i2a_def (05, ptr, v, uint64_t, 30, 10000, 1) |
|
|
1105 | ecb_i2a_def (06, ptr, v, uint64_t, 36, 100000, 1) |
|
|
1106 | ecb_i2a_def (07, ptr, v, uint64_t, 44, 1000000, 1) |
|
|
1107 | ecb_i2a_def (08, ptr, v, uint64_t, 50, 10000000, 1) |
|
|
1108 | ecb_i2a_def (09, ptr, v, uint64_t, 56, 100000000, 1) |
|
|
1109 | |
|
|
1110 | #define ECB_I2A_I32_DIGITS 11 |
|
|
1111 | #define ECB_I2A_U32_DIGITS 10 |
|
|
1112 | #define ECB_I2A_I64_DIGITS 20 |
|
|
1113 | #define ECB_I2A_U64_DIGITS 21 |
|
|
1114 | #define ECB_I2A_MAX_DIGITS 21 |
|
|
1115 | |
|
|
1116 | ecb_inline char * |
|
|
1117 | ecb_i2a_u32 (char *ptr, uint32_t u) |
|
|
1118 | { |
|
|
1119 | #if ECB_64BIT_NATIVE |
|
|
1120 | if (ecb_expect_true (u <= ECB_I2A_MAX_X10)) |
|
|
1121 | ptr = ecb_i2a_x10 (ptr, u); |
|
|
1122 | else // x10 almost, but not fully, covers 32 bit |
|
|
1123 | { |
|
|
1124 | uint32_t u1 = u % 1000000000; |
|
|
1125 | uint32_t u2 = u / 1000000000; |
|
|
1126 | |
|
|
1127 | *ptr++ = u2 + '0'; |
|
|
1128 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1129 | } |
|
|
1130 | #else |
|
|
1131 | if (ecb_expect_true (u <= ECB_I2A_MAX_X5)) |
|
|
1132 | ecb_i2a_x5 (ptr, u); |
|
|
1133 | else if (ecb_expect_true (u <= ECB_I2A_MAX_X5 * 10000)) |
|
|
1134 | { |
|
|
1135 | uint32_t u1 = u % 10000; |
|
|
1136 | uint32_t u2 = u / 10000; |
|
|
1137 | |
|
|
1138 | ptr = ecb_i2a_x5 (ptr, u2); |
|
|
1139 | ptr = ecb_i2a_04 (ptr, u1); |
|
|
1140 | } |
|
|
1141 | else |
|
|
1142 | { |
|
|
1143 | uint32_t u1 = u % 10000; |
|
|
1144 | uint32_t ua = u / 10000; |
|
|
1145 | uint32_t u2 = ua % 10000; |
|
|
1146 | uint32_t u3 = ua / 10000; |
|
|
1147 | |
|
|
1148 | ptr = ecb_i2a_2 (ptr, u3); |
|
|
1149 | ptr = ecb_i2a_04 (ptr, u2); |
|
|
1150 | ptr = ecb_i2a_04 (ptr, u1); |
|
|
1151 | } |
452 | #endif |
1152 | #endif |
453 | |
1153 | |
|
|
1154 | return ptr; |
|
|
1155 | } |
|
|
1156 | |
|
|
1157 | ecb_inline char * |
|
|
1158 | ecb_i2a_i32 (char *ptr, int32_t v) |
|
|
1159 | { |
|
|
1160 | *ptr = '-'; ptr += v < 0; |
|
|
1161 | uint32_t u = v < 0 ? -(uint32_t)v : v; |
|
|
1162 | |
|
|
1163 | #if ECB_64BIT_NATIVE |
|
|
1164 | ptr = ecb_i2a_x10 (ptr, u); // x10 fully covers 31 bit |
|
|
1165 | #else |
|
|
1166 | ptr = ecb_i2a_u32 (ptr, u); |
|
|
1167 | #endif |
|
|
1168 | |
|
|
1169 | return ptr; |
|
|
1170 | } |
|
|
1171 | |
|
|
1172 | ecb_inline char * |
|
|
1173 | ecb_i2a_u64 (char *ptr, uint64_t u) |
|
|
1174 | { |
|
|
1175 | #if ECB_64BIT_NATIVE |
|
|
1176 | if (ecb_expect_true (u <= ECB_I2A_MAX_X10)) |
|
|
1177 | ptr = ecb_i2a_x10 (ptr, u); |
|
|
1178 | else if (ecb_expect_false (u <= ECB_I2A_MAX_X10 * 1000000000)) |
|
|
1179 | { |
|
|
1180 | uint64_t u1 = u % 1000000000; |
|
|
1181 | uint64_t u2 = u / 1000000000; |
|
|
1182 | |
|
|
1183 | ptr = ecb_i2a_x10 (ptr, u2); |
|
|
1184 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1185 | } |
|
|
1186 | else |
|
|
1187 | { |
|
|
1188 | uint64_t u1 = u % 1000000000; |
|
|
1189 | uint64_t ua = u / 1000000000; |
|
|
1190 | uint64_t u2 = ua % 1000000000; |
|
|
1191 | uint64_t u3 = ua / 1000000000; |
|
|
1192 | |
|
|
1193 | ptr = ecb_i2a_2 (ptr, u3); |
|
|
1194 | ptr = ecb_i2a_09 (ptr, u2); |
|
|
1195 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1196 | } |
|
|
1197 | #else |
|
|
1198 | if (ecb_expect_true (u <= ECB_I2A_MAX_X5)) |
|
|
1199 | ptr = ecb_i2a_x5 (ptr, u); |
|
|
1200 | else |
|
|
1201 | { |
|
|
1202 | uint64_t u1 = u % 10000; |
|
|
1203 | uint64_t u2 = u / 10000; |
|
|
1204 | |
|
|
1205 | ptr = ecb_i2a_u64 (ptr, u2); |
|
|
1206 | ptr = ecb_i2a_04 (ptr, u1); |
|
|
1207 | } |
|
|
1208 | #endif |
|
|
1209 | |
|
|
1210 | return ptr; |
|
|
1211 | } |
|
|
1212 | |
|
|
1213 | ecb_inline char * |
|
|
1214 | ecb_i2a_i64 (char *ptr, int64_t v) |
|
|
1215 | { |
|
|
1216 | *ptr = '-'; ptr += v < 0; |
|
|
1217 | uint64_t u = v < 0 ? -(uint64_t)v : v; |
|
|
1218 | |
|
|
1219 | #if ECB_64BIT_NATIVE |
|
|
1220 | if (ecb_expect_true (u <= ECB_I2A_MAX_X10)) |
|
|
1221 | ptr = ecb_i2a_x10 (ptr, u); |
|
|
1222 | else if (ecb_expect_false (u <= ECB_I2A_MAX_X10 * 1000000000)) |
|
|
1223 | { |
|
|
1224 | uint64_t u1 = u % 1000000000; |
|
|
1225 | uint64_t u2 = u / 1000000000; |
|
|
1226 | |
|
|
1227 | ptr = ecb_i2a_x10 (ptr, u2); |
|
|
1228 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1229 | } |
|
|
1230 | else |
|
|
1231 | { |
|
|
1232 | uint64_t u1 = u % 1000000000; |
|
|
1233 | uint64_t ua = u / 1000000000; |
|
|
1234 | uint64_t u2 = ua % 1000000000; |
|
|
1235 | uint64_t u3 = ua / 1000000000; |
|
|
1236 | |
|
|
1237 | // 2**31 is 19 digits, so the top is exactly one digit |
|
|
1238 | *ptr++ = u3 + '0'; |
|
|
1239 | ptr = ecb_i2a_09 (ptr, u2); |
|
|
1240 | ptr = ecb_i2a_09 (ptr, u1); |
|
|
1241 | } |
|
|
1242 | #else |
|
|
1243 | ptr = ecb_i2a_u64 (ptr, u); |
|
|
1244 | #endif |
|
|
1245 | |
|
|
1246 | return ptr; |
|
|
1247 | } |
|
|
1248 | |
|
|
1249 | /*******************************************************************************/ |
|
|
1250 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1251 | |
|
|
1252 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1253 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1254 | #if 0 \ |
|
|
1255 | || __i386 || __i386__ \ |
|
|
1256 | || ECB_GCC_AMD64 \ |
|
|
1257 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1258 | || defined __s390__ || defined __s390x__ \ |
|
|
1259 | || defined __mips__ \ |
|
|
1260 | || defined __alpha__ \ |
|
|
1261 | || defined __hppa__ \ |
|
|
1262 | || defined __ia64__ \ |
|
|
1263 | || defined __m68k__ \ |
|
|
1264 | || defined __m88k__ \ |
|
|
1265 | || defined __sh__ \ |
|
|
1266 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
|
|
1267 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1268 | || defined __aarch64__ |
|
|
1269 | #define ECB_STDFP 1 |
|
|
1270 | #else |
|
|
1271 | #define ECB_STDFP 0 |
|
|
1272 | #endif |
|
|
1273 | |
|
|
1274 | #ifndef ECB_NO_LIBM |
|
|
1275 | |
|
|
1276 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1277 | |
|
|
1278 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1279 | #ifdef INFINITY |
|
|
1280 | #define ECB_INFINITY INFINITY |
|
|
1281 | #else |
|
|
1282 | #define ECB_INFINITY HUGE_VAL |
|
|
1283 | #endif |
|
|
1284 | |
|
|
1285 | #ifdef NAN |
|
|
1286 | #define ECB_NAN NAN |
|
|
1287 | #else |
|
|
1288 | #define ECB_NAN ECB_INFINITY |
|
|
1289 | #endif |
|
|
1290 | |
|
|
1291 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
1292 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1293 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
|
|
1294 | #else |
|
|
1295 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
|
|
1296 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
|
|
1297 | #endif |
|
|
1298 | |
|
|
1299 | /* convert a float to ieee single/binary32 */ |
|
|
1300 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
|
|
1301 | ecb_function_ ecb_const uint32_t |
|
|
1302 | ecb_float_to_binary32 (float x) |
|
|
1303 | { |
|
|
1304 | uint32_t r; |
|
|
1305 | |
|
|
1306 | #if ECB_STDFP |
|
|
1307 | memcpy (&r, &x, 4); |
|
|
1308 | #else |
|
|
1309 | /* slow emulation, works for anything but -0 */ |
|
|
1310 | uint32_t m; |
|
|
1311 | int e; |
|
|
1312 | |
|
|
1313 | if (x == 0e0f ) return 0x00000000U; |
|
|
1314 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1315 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1316 | if (x != x ) return 0x7fbfffffU; |
|
|
1317 | |
|
|
1318 | m = ecb_frexpf (x, &e) * 0x1000000U; |
|
|
1319 | |
|
|
1320 | r = m & 0x80000000U; |
|
|
1321 | |
|
|
1322 | if (r) |
|
|
1323 | m = -m; |
|
|
1324 | |
|
|
1325 | if (e <= -126) |
|
|
1326 | { |
|
|
1327 | m &= 0xffffffU; |
|
|
1328 | m >>= (-125 - e); |
|
|
1329 | e = -126; |
|
|
1330 | } |
|
|
1331 | |
|
|
1332 | r |= (e + 126) << 23; |
|
|
1333 | r |= m & 0x7fffffU; |
|
|
1334 | #endif |
|
|
1335 | |
|
|
1336 | return r; |
|
|
1337 | } |
|
|
1338 | |
|
|
1339 | /* converts an ieee single/binary32 to a float */ |
|
|
1340 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
|
|
1341 | ecb_function_ ecb_const float |
|
|
1342 | ecb_binary32_to_float (uint32_t x) |
|
|
1343 | { |
|
|
1344 | float r; |
|
|
1345 | |
|
|
1346 | #if ECB_STDFP |
|
|
1347 | memcpy (&r, &x, 4); |
|
|
1348 | #else |
|
|
1349 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1350 | int neg = x >> 31; |
|
|
1351 | int e = (x >> 23) & 0xffU; |
|
|
1352 | |
|
|
1353 | x &= 0x7fffffU; |
|
|
1354 | |
|
|
1355 | if (e) |
|
|
1356 | x |= 0x800000U; |
|
|
1357 | else |
|
|
1358 | e = 1; |
|
|
1359 | |
|
|
1360 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1361 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1362 | |
|
|
1363 | r = neg ? -r : r; |
|
|
1364 | #endif |
|
|
1365 | |
|
|
1366 | return r; |
|
|
1367 | } |
|
|
1368 | |
|
|
1369 | /* convert a double to ieee double/binary64 */ |
|
|
1370 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
|
|
1371 | ecb_function_ ecb_const uint64_t |
|
|
1372 | ecb_double_to_binary64 (double x) |
|
|
1373 | { |
|
|
1374 | uint64_t r; |
|
|
1375 | |
|
|
1376 | #if ECB_STDFP |
|
|
1377 | memcpy (&r, &x, 8); |
|
|
1378 | #else |
|
|
1379 | /* slow emulation, works for anything but -0 */ |
|
|
1380 | uint64_t m; |
|
|
1381 | int e; |
|
|
1382 | |
|
|
1383 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1384 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1385 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1386 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1387 | |
|
|
1388 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1389 | |
|
|
1390 | r = m & 0x8000000000000000;; |
|
|
1391 | |
|
|
1392 | if (r) |
|
|
1393 | m = -m; |
|
|
1394 | |
|
|
1395 | if (e <= -1022) |
|
|
1396 | { |
|
|
1397 | m &= 0x1fffffffffffffU; |
|
|
1398 | m >>= (-1021 - e); |
|
|
1399 | e = -1022; |
|
|
1400 | } |
|
|
1401 | |
|
|
1402 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1403 | r |= m & 0xfffffffffffffU; |
|
|
1404 | #endif |
|
|
1405 | |
|
|
1406 | return r; |
|
|
1407 | } |
|
|
1408 | |
|
|
1409 | /* converts an ieee double/binary64 to a double */ |
|
|
1410 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
|
|
1411 | ecb_function_ ecb_const double |
|
|
1412 | ecb_binary64_to_double (uint64_t x) |
|
|
1413 | { |
|
|
1414 | double r; |
|
|
1415 | |
|
|
1416 | #if ECB_STDFP |
|
|
1417 | memcpy (&r, &x, 8); |
|
|
1418 | #else |
|
|
1419 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1420 | int neg = x >> 63; |
|
|
1421 | int e = (x >> 52) & 0x7ffU; |
|
|
1422 | |
|
|
1423 | x &= 0xfffffffffffffU; |
|
|
1424 | |
|
|
1425 | if (e) |
|
|
1426 | x |= 0x10000000000000U; |
|
|
1427 | else |
|
|
1428 | e = 1; |
|
|
1429 | |
|
|
1430 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1431 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1432 | |
|
|
1433 | r = neg ? -r : r; |
|
|
1434 | #endif |
|
|
1435 | |
|
|
1436 | return r; |
|
|
1437 | } |
|
|
1438 | |
|
|
1439 | /* convert a float to ieee half/binary16 */ |
|
|
1440 | ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x); |
|
|
1441 | ecb_function_ ecb_const uint16_t |
|
|
1442 | ecb_float_to_binary16 (float x) |
|
|
1443 | { |
|
|
1444 | return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x)); |
|
|
1445 | } |
|
|
1446 | |
|
|
1447 | /* convert an ieee half/binary16 to float */ |
|
|
1448 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1449 | ecb_function_ ecb_const float |
|
|
1450 | ecb_binary16_to_float (uint16_t x) |
|
|
1451 | { |
|
|
1452 | return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
|
|
1453 | } |
|
|
1454 | |
|
|
1455 | #endif |
|
|
1456 | |
|
|
1457 | #endif |
|
|
1458 | |