[sf.cmath.ellint.1] (original) (raw)

29 Numerics library [numerics]

29.7 Mathematical functions for floating-point types [c.math]

29.7.6 Mathematical special functions [sf.cmath]

29.7.6.12 Incomplete elliptic integral of the first kind [sf.cmath.ellint.1]

_floating-point-type_ ellint_1(_floating-point-type_ k, _floating-point-type_ 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 argumentsk and phi (phi measured in radians).

Returns: F(k, φ), where F is given by Formula 29.32,k is k, andφ is phi.