… | |
… | |
28 | */ |
28 | */ |
29 | |
29 | |
30 | #ifndef ECB_H |
30 | #ifndef ECB_H |
31 | #define ECB_H |
31 | #define ECB_H |
32 | |
32 | |
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33 | #ifdef _WIN32 |
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34 | typedef signed char int8_t; |
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35 | typedef unsigned char uint8_t; |
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36 | typedef signed short int16_t; |
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37 | typedef unsigned short uint16_t; |
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38 | typedef signed int int32_t; |
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39 | typedef unsigned int uint32_t; |
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40 | #if __GNUC__ |
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41 | typedef signed long long int64_t; |
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42 | typedef unsigned long long uint64_t; |
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43 | #else /* _MSC_VER || __BORLANDC__ */ |
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44 | typedef signed __int64 int64_t; |
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45 | typedef unsigned __int64 uint64_t; |
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46 | #endif |
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47 | #else |
33 | #include <inttypes.h> |
48 | #include <inttypes.h> |
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49 | #endif |
34 | |
50 | |
35 | /* many compilers define _GNUC_ to some versions but then only implement |
51 | /* many compilers define _GNUC_ to some versions but then only implement |
36 | * what their idiot authors think are the "more important" extensions, |
52 | * what their idiot authors think are the "more important" extensions, |
37 | * causing enourmous grief in return for some better fake benchmark numbers. |
53 | * causing enourmous grief in return for some better fake benchmark numbers. |
38 | * or so. |
54 | * or so. |
39 | * we try to detect these and simply assume they are not gcc - if they have |
55 | * we try to detect these and simply assume they are not gcc - if they have |
40 | * an issue with that they should have done it right in the first place. |
56 | * an issue with that they should have done it right in the first place. |
41 | */ |
57 | */ |
42 | #ifndef ECB_GCC_VERSION |
58 | #ifndef ECB_GCC_VERSION |
43 | #if defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__llvm__) |
59 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
44 | #define ECB_GCC_VERSION(major,minor) 0 |
60 | #define ECB_GCC_VERSION(major,minor) 0 |
45 | #else |
61 | #else |
46 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
62 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
47 | #endif |
63 | #endif |
48 | #endif |
64 | #endif |
49 | |
65 | |
50 | #ifndef __cplusplus |
66 | /*****************************************************************************/ |
51 | #if __STDC_VERSION__ >= 199901L |
67 | |
52 | #define ECB_INLINE static inline |
68 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
53 | typedef _Bool ecb_bool; |
69 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
54 | #else |
70 | |
55 | #define ECB_INLINE static inline /* we assume the extension is ubiquituous, please tell us when we are wrong, or upgrade to the GCC */ |
71 | #if ECB_NO_THREADS || ECB_NO_SMP |
56 | typedef int ecb_bool; |
72 | #define ECB_MEMORY_FENCE do { } while (0) |
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73 | #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) |
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74 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) |
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75 | #endif |
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76 | |
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77 | #ifndef ECB_MEMORY_FENCE |
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78 | #if ECB_GCC_VERSION(2,5) |
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79 | #if __x86 |
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80 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
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81 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
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82 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
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83 | #elif __amd64 |
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84 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
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85 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
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86 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
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87 | #endif |
57 | #endif |
88 | #endif |
58 | #else |
89 | #endif |
59 | #define ECB_INLINE static inline |
90 | |
60 | typedef bool ecb_bool; |
91 | #ifndef ECB_MEMORY_FENCE |
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92 | #if ECB_GCC_VERSION(4,4) |
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93 | #define ECB_MEMORY_FENCE __sync_synchronize () |
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94 | #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) |
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95 | #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) |
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96 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
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97 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
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98 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
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99 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
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100 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
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101 | #elif defined(_WIN32) |
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102 | #include <WinNT.h> |
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103 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
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104 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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105 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
61 | #endif |
106 | #endif |
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107 | #endif |
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108 | |
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109 | #ifndef ECB_MEMORY_FENCE |
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110 | /* |
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111 | * if you get undefined symbol references to pthread_mutex_lock, |
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112 | * or failure to find pthread.h, then you should implement |
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113 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
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114 | * OR proide pthread.h and link against the posix thread library |
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115 | * of your system. |
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116 | */ |
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117 | #include <pthread.h> |
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118 | |
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119 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
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120 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
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121 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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122 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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123 | #endif |
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124 | |
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125 | /*****************************************************************************/ |
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126 | |
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127 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
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128 | |
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129 | #if __cplusplus |
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130 | #define ecb_inline static inline |
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131 | #elif ECB_GCC_VERSION(2,5) |
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132 | #define ecb_inline static __inline__ |
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133 | #elif ECB_C99 |
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134 | #define ecb_inline static inline |
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135 | #else |
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136 | #define ecb_inline static |
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137 | #endif |
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138 | |
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139 | #if ECB_GCC_VERSION(3,3) |
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140 | #define ecb_restrict __restrict__ |
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141 | #elif ECB_C99 |
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142 | #define ecb_restrict restrict |
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143 | #else |
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144 | #define ecb_restrict |
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145 | #endif |
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146 | |
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147 | typedef int ecb_bool; |
62 | |
148 | |
63 | #define ECB_CONCAT_(a, b) a ## b |
149 | #define ECB_CONCAT_(a, b) a ## b |
64 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
150 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
65 | #define ECB_STRINGIFY_(a) # a |
151 | #define ECB_STRINGIFY_(a) # a |
66 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
152 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
67 | |
153 | |
68 | #define ECB_HEADER_INLINE ECB_INLINE |
154 | #define ecb_function_ ecb_inline |
69 | |
155 | |
70 | #if ECB_GCC_VERSION(3,1) |
156 | #if ECB_GCC_VERSION(3,1) |
71 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
157 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
72 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
158 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
73 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
159 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
… | |
… | |
81 | |
167 | |
82 | /* no emulation for ecb_decltype */ |
168 | /* no emulation for ecb_decltype */ |
83 | #if ECB_GCC_VERSION(4,5) |
169 | #if ECB_GCC_VERSION(4,5) |
84 | #define ecb_decltype(x) __decltype(x) |
170 | #define ecb_decltype(x) __decltype(x) |
85 | #elif ECB_GCC_VERSION(3,0) |
171 | #elif ECB_GCC_VERSION(3,0) |
86 | #define ecb_decltype(x) typeof(x) |
172 | #define ecb_decltype(x) __typeof(x) |
87 | #endif |
173 | #endif |
88 | |
174 | |
89 | #define ecb_noinline ecb_attribute ((__noinline__)) |
175 | #define ecb_noinline ecb_attribute ((__noinline__)) |
90 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
176 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
91 | #define ecb_unused ecb_attribute ((__unused__)) |
177 | #define ecb_unused ecb_attribute ((__unused__)) |
92 | #define ecb_const ecb_attribute ((__const__)) |
178 | #define ecb_const ecb_attribute ((__const__)) |
93 | #define ecb_pure ecb_attribute ((__pure__)) |
179 | #define ecb_pure ecb_attribute ((__pure__)) |
94 | |
180 | |
95 | #if ECB_GCC_VERSION(4,3) |
181 | #if ECB_GCC_VERSION(4,3) |
96 | #define ecb_artificial ecb_attribute ((__artificial__)) /* 4.3 */ |
182 | #define ecb_artificial ecb_attribute ((__artificial__)) |
97 | #define ecb_hot ecb_attribute ((__hot__)) /* 4.3 */ |
183 | #define ecb_hot ecb_attribute ((__hot__)) |
98 | #define ecb_cold ecb_attribute ((__cold__)) /* 4.3 */ |
184 | #define ecb_cold ecb_attribute ((__cold__)) |
99 | #else |
185 | #else |
100 | #define ecb_artificial |
186 | #define ecb_artificial |
101 | #define ecb_hot |
187 | #define ecb_hot |
102 | #define ecb_cold |
188 | #define ecb_cold |
103 | #endif |
189 | #endif |
104 | |
190 | |
105 | /* put into if's if you are very sure that the expression */ |
191 | /* put around conditional expressions if you are very sure that the */ |
106 | /* is mostly true or mostly false. note that these return */ |
192 | /* expression is mostly true or mostly false. note that these return */ |
107 | /* booleans, not the expression. */ |
193 | /* booleans, not the expression. */ |
108 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
194 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
109 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
195 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
110 | /* for compatibility to the rest of the world */ |
196 | /* for compatibility to the rest of the world */ |
111 | #define ecb_likely(expr) ecb_expect_true (expr) |
197 | #define ecb_likely(expr) ecb_expect_true (expr) |
112 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
198 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
113 | |
199 | |
114 | /* try to tell the compiler that some condition is definitely true */ |
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115 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
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116 | |
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117 | /* count trailing zero bits and count # of one bits */ |
200 | /* count trailing zero bits and count # of one bits */ |
118 | #if ECB_GCC_VERSION(3,4) |
201 | #if ECB_GCC_VERSION(3,4) |
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202 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
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203 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
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204 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
119 | #define ecb_ctz32(x) __builtin_ctz (x) |
205 | #define ecb_ctz32(x) __builtin_ctz (x) |
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206 | #define ecb_ctz64(x) __builtin_ctzll (x) |
120 | #define ecb_popcount32(x) __builtin_popcount (x) |
207 | #define ecb_popcount32(x) __builtin_popcount (x) |
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208 | /* no popcountll */ |
121 | #else |
209 | #else |
122 | ECB_HEADER_INLINE int ecb_ctz32 (uint32_t x) ecb_const; |
210 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
123 | ECB_HEADER_INLINE int |
211 | ecb_function_ int |
124 | ecb_ctz32 (uint32_t x) |
212 | ecb_ctz32 (uint32_t x) |
125 | { |
213 | { |
126 | int r = 0; |
214 | int r = 0; |
127 | |
215 | |
128 | x &= -x; /* this isolates the lowest bit */ |
216 | x &= ~x + 1; /* this isolates the lowest bit */ |
129 | |
217 | |
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218 | #if ECB_branchless_on_i386 |
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219 | r += !!(x & 0xaaaaaaaa) << 0; |
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220 | r += !!(x & 0xcccccccc) << 1; |
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221 | r += !!(x & 0xf0f0f0f0) << 2; |
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222 | r += !!(x & 0xff00ff00) << 3; |
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223 | r += !!(x & 0xffff0000) << 4; |
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224 | #else |
130 | if (x & 0xaaaaaaaa) r += 1; |
225 | if (x & 0xaaaaaaaa) r += 1; |
131 | if (x & 0xcccccccc) r += 2; |
226 | if (x & 0xcccccccc) r += 2; |
132 | if (x & 0xf0f0f0f0) r += 4; |
227 | if (x & 0xf0f0f0f0) r += 4; |
133 | if (x & 0xff00ff00) r += 8; |
228 | if (x & 0xff00ff00) r += 8; |
134 | if (x & 0xffff0000) r += 16; |
229 | if (x & 0xffff0000) r += 16; |
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230 | #endif |
135 | |
231 | |
136 | return r; |
232 | return r; |
137 | } |
233 | } |
138 | |
234 | |
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235 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
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236 | ecb_function_ int |
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237 | ecb_ctz64 (uint64_t x) |
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238 | { |
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239 | int shift = x & 0xffffffffU ? 0 : 32; |
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240 | return ecb_ctz32 (x >> shift) + shift; |
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241 | } |
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242 | |
139 | ECB_HEADER_INLINE int ecb_popcount32 (uint32_t x) ecb_const; |
243 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
140 | ECB_HEADER_INLINE int |
244 | ecb_function_ int |
141 | ecb_popcount32 (uint32_t x) |
245 | ecb_popcount32 (uint32_t x) |
142 | { |
246 | { |
143 | x -= (x >> 1) & 0x55555555; |
247 | x -= (x >> 1) & 0x55555555; |
144 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
248 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
145 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
249 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
146 | x *= 0x01010101; |
250 | x *= 0x01010101; |
147 | |
251 | |
148 | return x >> 24; |
252 | return x >> 24; |
149 | } |
253 | } |
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254 | |
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255 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
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256 | ecb_function_ int ecb_ld32 (uint32_t x) |
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257 | { |
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258 | int r = 0; |
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259 | |
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260 | if (x >> 16) { x >>= 16; r += 16; } |
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261 | if (x >> 8) { x >>= 8; r += 8; } |
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262 | if (x >> 4) { x >>= 4; r += 4; } |
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263 | if (x >> 2) { x >>= 2; r += 2; } |
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264 | if (x >> 1) { r += 1; } |
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265 | |
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266 | return r; |
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267 | } |
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268 | |
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269 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
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270 | ecb_function_ int ecb_ld64 (uint64_t x) |
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271 | { |
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272 | int r = 0; |
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273 | |
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274 | if (x >> 32) { x >>= 32; r += 32; } |
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275 | |
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276 | return r + ecb_ld32 (x); |
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277 | } |
150 | #endif |
278 | #endif |
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279 | |
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280 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
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281 | /* so for this version we are lazy */ |
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282 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
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283 | ecb_function_ int |
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284 | ecb_popcount64 (uint64_t x) |
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285 | { |
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286 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
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287 | } |
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288 | |
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289 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
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290 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
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291 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
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292 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
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293 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
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294 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
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295 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
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296 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
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297 | |
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298 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
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299 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
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300 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
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301 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
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302 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
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303 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
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304 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
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305 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
151 | |
306 | |
152 | #if ECB_GCC_VERSION(4,3) |
307 | #if ECB_GCC_VERSION(4,3) |
153 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
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154 | #define ecb_bswap16(x) (__builtin_bswap32(x) >> 16) |
308 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
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309 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
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310 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
155 | #else |
311 | #else |
|
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312 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
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313 | ecb_function_ uint16_t |
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314 | ecb_bswap16 (uint16_t x) |
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315 | { |
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316 | return ecb_rotl16 (x, 8); |
|
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317 | } |
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318 | |
156 | ECB_HEADER_INLINE uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
319 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
157 | ECB_HEADER_INLINE uint32_t |
320 | ecb_function_ uint32_t |
158 | ecb_bswap32 (uint32_t x) |
321 | ecb_bswap32 (uint32_t x) |
159 | { |
322 | { |
160 | return (x >> 24) |
323 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
161 | | ((x >> 8) & 0x0000ff00) |
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162 | | ((x << 8) & 0x00ff0000) |
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163 | | (x << 24); |
|
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164 | } |
324 | } |
165 | |
325 | |
166 | ECB_HEADER_INLINE uint32_t ecb_bswap16 (uint32_t x) ecb_const; |
326 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
167 | ECB_HEADER_INLINE uint32_t |
327 | ecb_function_ uint64_t |
168 | ecb_bswap16 (uint32_t x) |
328 | ecb_bswap64 (uint64_t x) |
169 | { |
329 | { |
170 | return ((x >> 8) & 0xff) |
330 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
171 | | ((x << 8) & 0x00ff0000) |
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172 | | (x << 24); |
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173 | } |
331 | } |
174 | #endif |
332 | #endif |
175 | |
333 | |
176 | #if ECB_GCC_VERSION(4,5) |
334 | #if ECB_GCC_VERSION(4,5) |
177 | #define ecb_unreachable() __builtin_unreachable () |
335 | #define ecb_unreachable() __builtin_unreachable () |
178 | #else |
336 | #else |
179 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
337 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
180 | ECB_HEADER_INLINE void ecb_unreachable (void) ecb_noreturn; |
338 | ecb_function_ void ecb_unreachable (void) ecb_noreturn; |
181 | ECB_HEADER_INLINE void ecb_unreachable (void) { } |
339 | ecb_function_ void ecb_unreachable (void) { } |
182 | #endif |
340 | #endif |
183 | |
341 | |
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342 | /* try to tell the compiler that some condition is definitely true */ |
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343 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
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344 | |
184 | ECB_HEADER_INLINE unsigned char ecb_byteorder_helper (void) ecb_const; |
345 | ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; |
185 | ECB_HEADER_INLINE unsigned char |
346 | ecb_function_ unsigned char |
186 | ecb_byteorder_helper (void) |
347 | ecb_byteorder_helper (void) |
187 | { |
348 | { |
188 | const uint32_t u = 0x11223344; |
349 | const uint32_t u = 0x11223344; |
189 | return *(unsigned char *)&u; |
350 | return *(unsigned char *)&u; |
190 | } |
351 | } |
191 | |
352 | |
192 | ECB_HEADER_INLINE ecb_bool ecb_big_endian (void) ecb_const; |
353 | ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; |
193 | ECB_HEADER_INLINE ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }; |
354 | ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
194 | ECB_HEADER_INLINE ecb_bool ecb_little_endian (void) ecb_const; |
355 | ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; |
195 | ECB_HEADER_INLINE ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }; |
356 | ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
196 | |
357 | |
197 | #if ECB_GCC_VERSION(3,0) |
358 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
198 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
359 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
199 | #else |
360 | #else |
200 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
361 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
201 | #endif |
362 | #endif |
202 | |
363 | |
203 | #if ecb_cplusplus_does_not_suck |
364 | #if ecb_cplusplus_does_not_suck |
204 | // does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) |
365 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
205 | template<typename T, int N> |
366 | template<typename T, int N> |
206 | static inline int ecb_array_length (const T (&arr)[N]) |
367 | static inline int ecb_array_length (const T (&arr)[N]) |
207 | { |
368 | { |
208 | return N; |
369 | return N; |
209 | } |
370 | } |
210 | #else |
371 | #else |
211 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
372 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
212 | #endif |
373 | #endif |
213 | |
374 | |
214 | ECB_INLINE uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
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215 | ECB_INLINE uint32_t |
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216 | ecb_rotr32 (uint32_t x, unsigned int count) |
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217 | { |
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218 | return (x << (32 - count)) | (x >> count); |
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219 | } |
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220 | |
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221 | ECB_INLINE uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
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222 | ECB_INLINE uint32_t |
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223 | ecb_rotl32 (uint32_t x, unsigned int count) |
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224 | { |
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225 | return (x >> (32 - count)) | (x << count); |
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226 | } |
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227 | |
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228 | #endif |
375 | #endif |
229 | |
376 | |