26 Numerics library [numerics]

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

26.9.5 Mathematical special functions [sf.cmath]

26.9.5.1 Associated Laguerre polynomials [sf.cmath.assoc_laguerre]

double assoc_laguerre(unsigned n, unsigned m, double x); float assoc_laguerref(unsigned n, unsigned m, float x); long double assoc_laguerrel(unsigned n, unsigned m, long double x);

Effects: These functions compute the associated Laguerre polynomials of their respective arguments n, m, and x.

Returns: \[%
  \mathsf{L}_n^m(x) =
  (-1)^m \frac{\mathsf{d} ^ m}
	   {\mathsf{d}x ^ m} \, \mathsf{L}_{n+m}(x),
	   \quad \mbox{for $x \ge 0$}
\] where n is n, m is m, and x is x.

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