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utility.h
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Wed, Jun 12, 05:56
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Fri, Jun 14, 05:56 (2 d)
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R10834 Project_multiproc
utility.h
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/*
============================================================================
Filename : utility.h
Author : Arash Pourhabibi
============================================================================
*/
#include <omp.h>
#include <time.h>
#include <sys/time.h>
struct timeval start, end;
typedef struct rand_gen {
unsigned short * seed;
double (*rand_func) (struct rand_gen);
} rand_gen;
void set_clock(){
gettimeofday(&start, NULL);
}
double elapsed_time(){
gettimeofday(&end, NULL);
double elapsed = (end.tv_sec - start.tv_sec);
elapsed += (double)(end.tv_usec - start.tv_usec) / 1000000.0;
return elapsed;
}
// Gives a random number between 0 and 1
double next_rand(rand_gen gen){
return erand48(gen.seed);
}
rand_gen init_rand(){
unsigned short * seed_array = malloc (sizeof (unsigned short) * 3);
seed_array[0] = 5;
seed_array[1] = 10;
seed_array[2] = omp_get_thread_num();
rand_gen gen;
gen.seed = seed_array;
gen.rand_func = next_rand;
return gen;
}
void free_rand(rand_gen gen){
free(gen.seed);
}
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