Last change
on this file since 154 was
154,
checked in by sz, 11 years ago

reformatting, english translation


Property svn:eolstyle set to
native

File size:
1.4 KB

Rev  Line  

[121]  1  // This file is a part of the Framsticks GDK. 

 2  // Copyright (C) 20022014 Maciej Komosinski and Szymon Ulatowski. See LICENSE.txt for details. 

 3  // Refer to http://www.framsticks.com/ for further information. 

 4  

[109]  5  #include "rndutil.h" 

 6  #include <common/nonstd_math.h> 

 7  #include <stdlib.h> 

 8  

 9  unsigned short pseudornd(short x) 

 10  { 

[154]  11  static long seed = 0; 

 12  long y; 

 13  if (x <= 0) { seed = x; return 0; } 

 14  seed = (y = (3677 * seed + 3680) & 0x7fffffff)  1; 

 15  return (unsigned short)(((unsigned short)y) % (x)); //rzutowanie y>unsigned short to pewnie blad bo zmniejsza wartosc ktorej sie potem robi modulo, ale pseudornd sluzy chyba tylko do generowania randomowych world map? i modulo i tak jest tam bardzo male, lepiej niczego nie zmieniac bo po co maja pliki z ustawieniami zmienic swoje przypadkowe znaczenie 

[109]  16  } 

 17  

 18  double CustomRnd(double *tab) 

 19  { 

[154]  20  double *range = tab + 1 + 2 * randomN((int)(0.5 + tab[0])); 

 21  return range[0] + rnd0N(range[1]  range[0]); 

[112]  22  } 

[109]  23  

 24  double RandomGener::Uni(double begin, double end) 

 25  { 

[154]  26  return begin + rnd01*(end  begin); 

[109]  27  } 

 28  

 29  double RandomGener::GaussStd() 

 30  { 

[154]  31  if (isNextGauss) { isNextGauss = 0; return nextGauss; } 

 32  double v1, v2, s; 

 33  do { 

 34  v1 = 2 * rnd01  1; //1..1 

 35  v2 = 2 * rnd01  1; //1..1 

 36  s = v1*v1 + v2*v2; 

 37  } while (s >= 1); 

 38  double mult = sqrt(2 * log(s) / s); 

 39  nextGauss = v2*mult; 

 40  isNextGauss = 1; 

 41  return v1*mult; 

[109]  42  } 

 43  

[154]  44  double RandomGener::Gauss(double m, double s) 

 45  { 

 46  return m + s*GaussStd(); 

 47  } 

[109]  48  

 49  RandomGener RndGen; 

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