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()
  25     {
  26     // rien
  27     }
  28
  29 /*--------------------------------------*\
  30  |*             Methodes                *|
  31  \*-------------------------------------*/
  32
  33 /*----------------------*\
  34  |*     static          *|
  35  \*---------------------*/
  36
  37 /**
  38  * in [a,b]
  39  * Attention : pas thread safe
  40  */
  41 double AleaTools::uniformeAB(double a, double b)
  42     {
  43     return a + uniforme01() * (b - a);
  44     }
  45
  46 /**
  47  * in [0,1]
  48  * Attention : pas thread safe
  49  */
  50 double AleaTools::uniforme01(void)
  51     {
  52     // rand in [0,RAND_MAX]
  53     return rand() / (double) RAND_MAX;
  54     }
  55
  56 /**
  57  * in [a,b]
  58  * Attention : pas thread safe
  59  */
  60 int AleaTools::uniformeAB(int a, int b)
  61     {
  62     // rand in [0,RAND_MAX]
  63     double pente = (b-a)/(double)RAND_MAX;
  64
  65     return a+(int)(pente*rand());
  66     }
  67
  68
  69 /*----------------------------------------------------------------------*\
  70  |*                     End                                             *|
  71  \*---------------------------------------------------------------------*/
  72