| … | |
… | |
| 34 | // in range excluding end |
34 | // in range excluding end |
| 35 | #define IN_RANGE_EXC(val,beg,end) \ |
35 | #define IN_RANGE_EXC(val,beg,end) \ |
| 36 | ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) |
36 | ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) |
| 37 | |
37 | |
| 38 | void fork_abort (const char *msg); |
38 | void fork_abort (const char *msg); |
|
|
39 | |
|
|
40 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
|
|
41 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
|
|
42 | template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; } |
|
|
43 | |
|
|
44 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
| 39 | |
45 | |
| 40 | // this is much faster than crossfires original algorithm |
46 | // this is much faster than crossfires original algorithm |
| 41 | // on modern cpus |
47 | // on modern cpus |
| 42 | inline int |
48 | inline int |
| 43 | isqrt (int n) |
49 | isqrt (int n) |
| … | |
… | |
| 183 | { |
189 | { |
| 184 | p->~Tp (); |
190 | p->~Tp (); |
| 185 | } |
191 | } |
| 186 | }; |
192 | }; |
| 187 | |
193 | |
|
|
194 | // P. L'Ecuyer, “Maximally Equidistributed Combined Tausworthe Generators”, Mathematics of Computation, 65, 213 (1996), 203–213. |
|
|
195 | // http://www.iro.umontreal.ca/~lecuyer/myftp/papers/tausme.ps |
|
|
196 | // http://www.iro.umontreal.ca/~lecuyer/myftp/papers/tausme2.ps |
|
|
197 | struct tausworthe_random_generator |
|
|
198 | { |
|
|
199 | // generator |
|
|
200 | uint32_t state [4]; |
|
|
201 | |
|
|
202 | void operator =(const tausworthe_random_generator &src) |
|
|
203 | { |
|
|
204 | state [0] = src.state [0]; |
|
|
205 | state [1] = src.state [1]; |
|
|
206 | state [2] = src.state [2]; |
|
|
207 | state [3] = src.state [3]; |
|
|
208 | } |
|
|
209 | |
|
|
210 | void seed (uint32_t seed); |
|
|
211 | uint32_t next (); |
|
|
212 | |
|
|
213 | // uniform distribution |
|
|
214 | uint32_t operator ()(uint32_t r_max) |
|
|
215 | { |
|
|
216 | return is_constant (r_max) |
|
|
217 | ? this->next () % r_max |
|
|
218 | : get_range (r_max); |
|
|
219 | } |
|
|
220 | |
|
|
221 | // return a number within (min .. max) |
|
|
222 | int operator () (int r_min, int r_max) |
|
|
223 | { |
|
|
224 | return is_constant (r_min) && is_constant (r_max) |
|
|
225 | ? r_min + (*this) (max (r_max - r_min + 1, 1)) |
|
|
226 | : get_range (r_min, r_max); |
|
|
227 | } |
|
|
228 | |
|
|
229 | double operator ()() |
|
|
230 | { |
|
|
231 | return this->next () / (double)0xFFFFFFFFU; |
|
|
232 | } |
|
|
233 | |
|
|
234 | protected: |
|
|
235 | uint32_t get_range (uint32_t r_max); |
|
|
236 | int get_range (int r_min, int r_max); |
|
|
237 | }; |
|
|
238 | |
|
|
239 | typedef tausworthe_random_generator rand_gen; |
|
|
240 | |
|
|
241 | extern rand_gen rndm; |
|
|
242 | |
| 188 | template<class T> |
243 | template<class T> |
| 189 | struct refptr |
244 | struct refptr |
| 190 | { |
245 | { |
| 191 | T *p; |
246 | T *p; |
| 192 | |
247 | |
| … | |
… | |
| 309 | { |
364 | { |
| 310 | errase (&obj); |
365 | errase (&obj); |
| 311 | } |
366 | } |
| 312 | }; |
367 | }; |
| 313 | |
368 | |
| 314 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
|
|
| 315 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
|
|
| 316 | template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; } |
|
|
| 317 | |
|
|
| 318 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
|
|
| 319 | |
|
|
| 320 | // basically does what strncpy should do, but appends "..." to strings exceeding length |
369 | // basically does what strncpy should do, but appends "..." to strings exceeding length |
| 321 | void assign (char *dst, const char *src, int maxlen); |
370 | void assign (char *dst, const char *src, int maxlen); |
| 322 | |
371 | |
| 323 | // type-safe version of assign |
372 | // type-safe version of assign |
| 324 | template<int N> |
373 | template<int N> |
