29.9 Mathematical functions for floating-point types [c.math]
double laguerre(unsigned n, double x);
float laguerref(unsigned n, float x);
long double laguerrel(unsigned n, long double x);
Effects:
These functions compute the Laguerre polynomials
of their respective arguments
n and x.
Returns:
Ln(x)=exn!dndxn(xne−x),for x≥0
where
n is n and
x is x.
Remarks:
The effect of calling each of these functions
is implementation-defined
if n >= 128.