fratiop

double fratiop(double x, double v1, double v2);

Returns the value of the F-ratio random variable distribution function with v1 degrees of freedom numerator and v2 degrees of freedom denomenator at the value f.

Parameters:
xCritical point.
v1Numerator degrees of freedom.
v2Denominator degrees of freedom.

Returns:
P(X ≤ x | v1, v2)

Errors:
NUMERICS_ERROR is raised if v1 ≤ 0 or v2 ≤ 0

Usage:
double p = fratiop(.5, 1.5, 2.75)

Header:
#include "normdist.h"