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rng_gsl_2.c
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#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <gsl/gsl_rng.h>
#include <time.h>
// const int N = 1000; /* liczba wierszy */
// const int M = 1000; /* liczba kolumn */
#define IJ(i,j,N) (((i)-1) + ((j)-1)*(N))
// gcc -Wall -o ran9 ran9.c -lgsl -lgslcblas -lm
int N, M;
int main(int argc, char **argv)
{
FILE *plik;
float *tab;
int i,j, a;
const gsl_rng_type * T;
gsl_rng * r;
//T = gsl_rng_ranlxs2;
char *nazwapl;
if (argc <=1){
fprintf(stderr,"Brak odpowiedzniej liczby argumentow\n");
fprintf(stderr,"Sposob uzycia:\n");
fprintf(stderr,"nazwa_programu liczba_wierszy liczba_kolumn numer_algorytmu_gsl nazwa_pliku_danych\n");
return(-1);
}
else
{
N=atoi(argv[1]);
M=atoi(argv[2]);
a=atoi(argv[3]);
nazwapl=argv[4];
if ((plik=fopen(nazwapl,"w"))==NULL) {
fprintf(stderr,"Nie otworzyc pliku\n");
return(-1);
}
}
switch (a)
{
case 1:
T = gsl_rng_mt19937;
break;
case 2:
T = gsl_rng_ranlxs0;
break;
case 3:
T = gsl_rng_ranlxs1;
break;
case 4:
T = gsl_rng_ranlxs2;
break;
case 5:
T = gsl_rng_ranlxd1;
break;
case 6:
T = gsl_rng_ranlxd2;
break;
case 7:
T = gsl_rng_ranlux;
break;
case 8:
T = gsl_rng_ranlux389;
break;
case 9:
T = gsl_rng_cmrg;
break;
case 10:
T = gsl_rng_mrg;
break;
case 11:
T = gsl_rng_taus;
break;
case 12:
T = gsl_rng_taus2;
break;
case 13:
T = gsl_rng_gfsr4;
break;
default:
T = gsl_rng_mt19937;
break;
}
r = gsl_rng_alloc (T);
gsl_rng_set(r,time(0));
/* Faza 1: tworzymy tablicę liczb tab */
if ((tab = (float *) malloc(N*M*sizeof(float))) == NULL)
{
fprintf(stderr, "Nie mozna przydzielic pamieci\n");
return(-1);
}
for( j = 1; j <= M; j++)
for( i = 1; i <= N; i++)
tab[IJ(i,j,N)] = gsl_rng_uniform (r);
/* Faza 2: wypisujemy dane z tablicy T do pliku tablica.dat */
/*if ((plik = fopen("ranlxs2_006.txt","w")) == NULL)
{
fprintf(stderr, "Nie mozna otworzyc pliku\n");
return(-1);
}*/
for( i = 1; i <= N; i++)
{
for( j = 1; j <= M; j++)
fprintf(plik, "%.5f ", tab[IJ(i,j,N)]);
fprintf(plik, "\n");
}
printf ("generator type: %s\n", gsl_rng_name (r));
printf ("seed = %lu\n", time(0));
printf ("first value = %.5f\n", gsl_rng_uniform (r));
/* Faza 3: sprzątanie */
ferror(plik);
fclose(plik);
free(tab);
gsl_rng_free (r);
return(0);
}