[sf.cmath.cyl.bessel.i] (original) (raw)

29 Numerics library [numerics]

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

29.7.6 Mathematical special functions [sf.cmath]

29.7.6.8 Regular modified cylindrical Bessel functions [sf.cmath.cyl.bessel.i]

_floating-point-type_ cyl_bessel_i(_floating-point-type_ nu, _floating-point-type_ x);float cyl_bessel_if(float nu, float x);long double cyl_bessel_il(long double nu, long double x);

Effects: These functions compute the regular modified cylindrical Bessel functions of their respective argumentsnu and x.

Returns: , where is given by Formula 29.28,ν is nu, andx is x.

Remarks: The effect of calling each of these functions is implementation-defined if nu >= 128.