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simulacion-permeabilidad/fftma_module/gen/lib_src/gammf.c

25 lines
598 B
C

#include "genlib.h"
#include "log.h"
#include <math.h>
#include <stdio.h>
#include <time.h>
/*gamma covariance function*/
double gammf(double h, double alpha) {
clock_t t = clock();
log_info("RESULT = in progress, h = %f, alpha = %f", h, alpha);
float delta;
double z;
delta = pow(20., 1. / alpha) - 1.;
z = 1. / (double)(pow(1. + h * delta, alpha));
t = clock() - t;
double time_taken = ((double)t)/CLOCKS_PER_SEC; // calculate the elapsed time
log_info("RESULT = success, delta = %f, z = %f, ELAPSED = %f seconds", delta, z, time_taken);
return z;
}