29.9 Mathematical functions for floating-point types [c.math]
double ellint_1(double k, double phi);
float ellint_1f(float k, float phi);
long double ellint_1l(long double k, long double phi);
Effects:
These functions compute
the incomplete elliptic integral of the first kind
of their respective arguments
k and
phi (
phi measured in radians)
. Returns:
where
k is k and
φ is phi.