WCudaMSE/BilatTools_CPP/src/core/tools/cpp/AleaTools.cpp

   1 #include <iostream>
   2 #include <math.h>
   3 #include <cstdlib>
   4 #include <stdlib.h>
   5
   6 #include "AleaTools.h"
   7
   8 using std::cout;
   9 using std::endl;
  10
  11 /*----------------------------------------------------------------------*\
  12  |*                     Implementation                                  *|
  13  \*---------------------------------------------------------------------*/
  14
  15 /*--------------------------------------*\
  16  |*             Constructor             *|
  17  \*-------------------------------------*/
  18
  19 AleaTools::AleaTools()
  20     {
  21     srand(time(NULL));
  22     }
  23
  24 AleaTools::AleaTools(uint seed)
  25     {
  26     srand(seed);
  27     }
  28
  29 AleaTools::~AleaTools()
  30     {
  31     // rien
  32     }
  33
  34 /*--------------------------------------*\
  35  |*             Methodes                *|
  36  \*-------------------------------------*/
  37
  38 /*----------------------*\
  39  |*     static          *|
  40  \*---------------------*/
  41
  42 /**
  43  * in [a,b]
  44  * Attention : pas thread safe
  45  */
  46 double AleaTools::uniformeAB(double a, double b)
  47     {
  48     return a + uniforme01() * (b - a);
  49     }
  50
  51 /**
  52  * in [0,1]
  53  * Attention : pas thread safe
  54  */
  55 double AleaTools::uniforme01(void)
  56     {
  57     // rand in [0,RAND_MAX]
  58     return rand() / (double) RAND_MAX;
  59     }
  60
  61 /**
  62  * in [a,b]
  63  * Attention : pas thread safe
  64  */
  65 int AleaTools::uniformeAB(int a, int b)
  66     {
  67     // rand in [0,RAND_MAX]
  68     double pente = (b-a)/(double)RAND_MAX;
  69
  70     return a+(int)(pente*rand());
  71     }
  72
  73
  74 /*----------------------------------------------------------------------*\
  75  |*                     End                                             *|
  76  \*---------------------------------------------------------------------*/
  77