/* nag_nonpar_randtest_gaps (g08edc) Example Program.
*
* Copyright 2022 Numerical Algorithms Group.
*
* Mark 28.6, 2022.
*
*
*/
#include <nag.h>
#include <stdio.h>
int main(void) {
/* Integer scalar and array declarations */
Integer exit_status = 0;
Integer lstate;
Integer *state = 0;
/* NAG structures */
NagError fail;
/* Double scalar and array declarations */
double chi, df, length, lower, p, upper, *x = 0;
/* Choose the base generator */
Nag_BaseRNG genid = Nag_Basic;
Integer subid = 0;
/* Set the seed */
Integer seed[] = {424232};
Integer lseed = 1;
/* Set the size of the (randomly generated) dataset */
Integer n = 5000;
/* Set the maximum number of gaps (0 = no limit) */
Integer num_gaps = 0;
/* Set the length of the maximum gap */
Integer max_gap = 10;
/* Initialize the error structure */
INIT_FAIL(fail);
printf("nag_nonpar_randtest_gaps (g08edc) Example Program Results\n");
/* Get the length of the state array */
lstate = -1;
nag_rand_init_repeat(genid, subid, seed, lseed, state, &lstate, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_rand_init_repeat (g05kfc).\n%s\n", fail.message);
exit_status = 1;
goto END;
}
/* Allocate arrays */
if (!(x = NAG_ALLOC(n, double)) || !(state = NAG_ALLOC(lstate, Integer))) {
printf("Allocation failure\n");
exit_status = -1;
goto END;
}
/* Initialize the generator to a repeatable sequence */
nag_rand_init_repeat(genid, subid, seed, lseed, state, &lstate, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_rand_init_repeat (g05kfc).\n%s\n", fail.message);
exit_status = 1;
goto END;
}
/* Generate vector of n uniform variates between 0.0 and 1.0 */
nag_rand_dist_uniform(n, 0.0, 1.0, state, x, &fail);
/* Set the length of interval which contains all possible values.
The data is generated from the range 0.0 to 1.0, so length is 1.0
*/
length = 1.0;
/* Set lower and upper limit for the interval used for the gap test */
lower = 0.4;
upper = 0.6;
/* nag_nonpar_randtest_gaps (g08edc).
* Performs the gaps test for randomness
*/
nag_nonpar_randtest_gaps(n, x, num_gaps, max_gap, lower, upper, length, &chi,
&df, &p, &fail);
/* Display the results */
if (fail.code != NE_NOERROR && fail.code != NE_G08ED_GAPS &&
fail.code != NE_G08ED_FREQ_LT_ONE) {
printf("Error from nag_nonpar_randtest_gaps (g08edc).\n%s\n", fail.message);
exit_status = 1;
goto END;
}
printf("\n");
printf("Chisq = %10.4f\n", chi);
printf("DF = %7.1f\n", df);
printf("Prob = %10.4f\n", p);
if (fail.code == NE_G08ED_FREQ_LT_ONE)
printf("Error from nag_nonpar_randtest_gaps (g08edc).\n%s\n", fail.message);
END:
NAG_FREE(x);
NAG_FREE(state);
return exit_status;
}