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);
These functions compute the Laguerre polynomials
of their respective arguments
n and x.
n is n and
x is x.
The effect of calling each of these functions
if n >= 128.