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cvmw2e.c
Go to the documentation of this file.
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "local_proto.h"
double *Cdhc_cramer_von_mises_exp(double *x, int n)
{
static double y[2];
double *xcopy, mean = 0.0, fx, fn2, sum4 = 0.0;
int i;
if ((xcopy = (double *)malloc(n * sizeof(double))) == NULL) {
fprintf(stderr, "Memory error in Cdhc_cramer_von_mises_exp\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) {
/*-
a = (2 * i + 1) * log (fx);
b = (2 * i + 1) * (xcopy[n-i-1] * (-1.0 / mean));
sum3 += a + b;
*/
fx = 1 - exp(xcopy[i] * (-1.0 / mean));
fn2 = (double)(2.0 * i + 1) / (2 * n);
sum4 += (fx - fn2) * (fx - fn2);
}
/*-
cvm = 1.0 / (n * 12) + sum4;
cvmod = cvm * (0.16 / n + 1.0);
*/
y[0] = (1.0 / (n * 12) + sum4) * (0.16 / n + 1.0);
#ifdef NOISY
fprintf(stdout, " TEST16 CVM(E) =%10.4f\n", y[0]);
#endif /* NOISY */
free(xcopy);
return y;
}
NULL
#define NULL
Definition ccmath.h:32
Cdhc_cramer_von_mises_exp
double * Cdhc_cramer_von_mises_exp(double *x, int n)
Definition cvmw2e.c:6
Cdhc_dcmp
int Cdhc_dcmp(const void *i, const void *j)
Definition dcmp.c:1
x
#define x