Last change
on this file since 438 was
286,
checked in by Maciej Komosinski, 10 years ago
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Updated headers
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Property svn:eol-style set to
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File size:
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[286] | 1 | // This file is a part of Framsticks SDK. http://www.framsticks.com/ |
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| 2 | // Copyright (C) 1999-2015 Maciej Komosinski and Szymon Ulatowski. |
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| 3 | // See LICENSE.txt for details. |
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[121] | 4 | |
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[109] | 5 | #ifndef _RNDUTIL_H_ |
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| 6 | #define _RNDUTIL_H_ |
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| 7 | |
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| 8 | #include <common/nonstd.h> |
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| 9 | #include "math.h" |
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| 10 | |
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| 11 | /** @file rndutil.h various functions */ |
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| 12 | |
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| 13 | /** @param x change seed if x<=0 |
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| 14 | @return random value [0..x-1] if x>0 */ |
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| 15 | unsigned short pseudornd(short x); |
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| 16 | |
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| 17 | double CustomRnd(double*); |
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| 18 | // the parameter is a table which describes the random distribution: |
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| 19 | // e.g. |
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| 20 | // double x[]={ 3, // 3 intervals |
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| 21 | // -10,-1, // (each of them has always uniform distribution and equal probability of being selected) |
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| 22 | // -1, 1, |
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| 23 | // 1,10, }; |
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| 24 | |
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| 25 | class RandomGener |
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| 26 | { |
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| 27 | public: |
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| 28 | RandomGener() {isNextGauss=0;} |
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| 29 | static double Uni(double begin, double end); ///< uniform excluding 'end' boundary |
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| 30 | double GaussStd(); |
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| 31 | double Gauss(double m,double s); ///< usually will not return further than 5*stdd |
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| 32 | private: |
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| 33 | int isNextGauss; |
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| 34 | double nextGauss; |
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| 35 | }; |
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| 36 | |
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| 37 | extern RandomGener RndGen; |
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| 38 | |
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| 39 | #endif |
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