X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d5b93304c003059f0994a809fb147eb7e90791c6..c19150f4a1c712b3435ccc04b30e7cfacd66c689:/src/surf/random_mgr.c

diff --git a/src/surf/random_mgr.c b/src/surf/random_mgr.c
index bbbe414581..44f8534eab 100644
--- a/src/surf/random_mgr.c
+++ b/src/surf/random_mgr.c
@@ -10,18 +10,19 @@ static double drand48(void)
 }
 #endif
 
-static double custom_random(int generator){
+static double custom_random(Generator generator, long int *seed){
    switch(generator) {
-      
-	case DRAND48:return drand48(); 	
-	case RAND: return (double)rand()/RAND_MAX; 
+   case DRAND48:
+     return drand48(); 	
+   case RAND: 
+     return (double)rand_r((unsigned int*)seed)/RAND_MAX; 
    default: return drand48();
    }
 }
 
 /* Generate numbers between min and max with a given mean and standard deviation */
-float random_generate(random_data_t random){  
-  float x1, x2, w, y;
+double random_generate(random_data_t random){  
+  double x1, x2, w, y;
   
   if (random == NULL) return 0.0f;  
 
@@ -31,8 +32,8 @@ float random_generate(random_data_t random){
          y1 = sqrt( - 2 * log(x1) ) * cos( 2 * pi * x2 )
     */ 
     do {
-      x1 = 2.0 * custom_random(random->generator) - 1.0;
-      x2 = 2.0 * custom_random(random->generator) - 1.0;
+      x1 = 2.0 * custom_random(random->generator,&(random->seed)) - 1.0;
+      x2 = 2.0 * custom_random(random->generator,&(random->seed)) - 1.0;
       w = x1 * x1 + x2 * x2;
     } while ( w >= 1.0 );
 
@@ -46,9 +47,12 @@ float random_generate(random_data_t random){
   return y;
 }
 
-random_data_t random_new(int generator, int min, int max, int mean, int stdDeviation){
+random_data_t random_new(Generator generator, long int seed, 
+			 double min, double max, double mean, 
+			 double stdDeviation){
   random_data_t random = xbt_new0(s_random_data_t, 1);
   random->generator = generator;
+  random->seed = seed;
   random->min = min;
   random->max = max;
   random->mean = mean;