double nfdev(double dfn, double dfd, double xnonc, long* seed);
Returns a non-central F distributed deviate with dfn degrees of freedom numerator, dfd degrees of freedom denominator, and non-centrallity parameter xnonc using RAND(idum) as the source of uniform deviates.
Parameters:
dfn | Numerator degrees of freedom |
---|---|
dfd | Denominator degrees of freedom |
xnonc | Non-centrality parameter. |
seed | Random number generator seed. |
Returns:
The next random number from the generator.
Usage:
Initialization of the generator depends on the implementation of RAND choosen by the user. To generate the next random number simply call
double r = nfdev(2.0, 3.0, 4.0, &seed)
Header:
#include "deviate.h"
See also:
RAND