Last change
on this file since 3 was
3,
checked in by Maciej Komosinski, 16 years ago
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added geno_fx, a base class for genetic operations on genotypes
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File size:
909 bytes
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1 | #ifndef _RNDUTIL_H_
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2 | #define _RNDUTIL_H_
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3 |
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4 | #include "nonstd.h"
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5 | #include "math.h"
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6 |
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7 | /** @file rndutil.h various functions */
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8 |
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9 | /** @param x change seed if x<=0
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10 | @return random value [0..x-1] if x>0 */
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11 | unsigned short pseudornd(short x);
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12 |
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13 | double CustomRnd(double*);
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14 | // the parameter is a table which describes the random distribution:
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15 | // e.g.
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16 | // double x[]={ 3, // 3 intervals
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17 | // -10,-1, // (each of them has always uniform distribution and equal probability of being selected)
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18 | // -1, 1,
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19 | // 1,10, };
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20 |
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21 | class RandomGener
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22 | {
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23 | public:
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24 | RandomGener() {isNextGauss=0;}
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25 | static double Uni(float pocz, float kon); ///< unform excluding boundaries
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26 | double GaussStd();
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27 | double Gauss(float m,float s); ///< usually will not return further than 5*stdd
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28 | private:
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29 | int isNextGauss;
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30 | double nextGauss;
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31 | };
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32 |
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33 | extern RandomGener RndGen;
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34 |
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35 | #endif
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