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ex-1/main.c: make sample size configurable

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This commit is contained in:
Michele Guerini Rocco 2020-04-25 22:11:39 +00:00
parent 15eb3dbb88
commit 75bc5caede
1 changed files with 14 additions and 1 deletions
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15
ex-1/main.c
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@ -1,5 +1,6 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <gsl/gsl_randist.h>
#include <gsl/gsl_statistics_double.h>
@ -15,12 +16,24 @@
* distribution.
*/
int main(int argc, char** argv) {
size_t samples = 50000;
/* Process CLI arguments */
for (size_t i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-n")) samples = atol(argv[++i]);
else {
fprintf(stderr, "Usage: %s -[hn]\n", argv[0]);
fprintf(stderr, "\t-h\tShow this message.\n");
fprintf(stderr, "\t-n N\tThe size of sample to generate. (default: 50000)\n");
return EXIT_FAILURE;
}
}
// initialize an RNG
gsl_rng_env_setup();
gsl_rng *r = gsl_rng_alloc(gsl_rng_default);
// prepare histogram
size_t samples = 50000;
double* sample = calloc(samples, sizeof(double));
double min = -10;
double max = 10;