random.c

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#include "random.h"

#include <sys/types.h>
#include <time.h>
#include <stdlib.h>
#include <math.h>

void randomReset()
{
  srand((unsigned int)time(NULL));
}

void randomSet(unsigned int seed)
{
  srand(seed);
}

double randomDouble()
{
  return((double)rand()/(double)RAND_MAX);
}

double randomInInterval(Tinterval *t) 
{
  double a,b;

  a=LowerLimit(t);
  b=UpperLimit(t);

  return(a+randomDouble()*(b-a));
}

unsigned int randomMax(unsigned int m)
{
  return((unsigned int)floor(randomDouble()*(m+1))); /* in [0,m+1) -> all values in 0,m have same chances */
}