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andrsnde.c
Go to the documentation of this file.
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "local_proto.h"
double *Cdhc_anderson_darling_exp(double *x, int n)
{
static double y[2];
double mean = 0.0, *xcopy, fx, sum3 = 0.0;
int i;
if ((xcopy = (double *)malloc(n * sizeof(double))) == NULL) {
fprintf(stderr, "Memory error in Cdhc_anderson_darling\n");
exit(EXIT_FAILURE);
}
for (i = 0; i < n; ++i) {
xcopy[i] = x[i];
mean += x[i];
}
mean /= n;
qsort(xcopy, n, sizeof(double), Cdhc_dcmp);
for (i = 0; i < n; ++i) {
fx = 1 - exp(-xcopy[i] / mean);
sum3 += (2.0 * i + 1) * (log(fx) - xcopy[n - i - 1] / mean);
}
y[0] = (1.0 + 0.3 / n) * (-n - sum3 / n);
#ifdef NOISY
fprintf(stdout, " TEST20 AD(E) =%10.4f\n", y[0]);
#endif /* NOISY */
free(xcopy);
return y;
}
Cdhc_anderson_darling_exp
double * Cdhc_anderson_darling_exp(double *x, int n)
Definition andrsnde.c:6
NULL
#define NULL
Definition ccmath.h:32
Cdhc_dcmp
int Cdhc_dcmp(const void *i, const void *j)
Definition dcmp.c:1
x
#define x