Elliptic_integral_rf
Elliptic-integral-rf-func
Definition:
calculates an approximation to the integral
where x, y, z ≥ 0 and at most one is zero.
For more information please review the s21bbc function in the NAG document.
Parameters:
- x (input, double)
- The argument x of the function.
- y (input, double)
- The argument y of the function.
- z (input, double)
- The argument z of the function.
- Constraint: x, y, z ≥ 0.0 and only one of x, y and z may be zero.
- Rf (output, double)
- Approximation of the integral