combc.cpp File Reference

($Id$)

This file has routines for the constant type log-factorial, log-binomial, and log-gamma functions for scalar and vector arguments. More...

#include <fvar.hpp>

Go to the source code of this file.

Functions
double	factln (double n)
	Log-factorial .
dvector	factln (const dvector &r)
	Log-factorial of an array.
double	gammln (double xx)
	Log gamma function.
dvector	gammln (const dvector &v)
	Log-Gamma of an array.
double	log_comb (double n, double k)
	Log of the binomial coefficent; i.e log of 'n choose k'.
dvector	log_comb (const dvector &n, const dvector &r)
	Log-binomial of two arrays.
dvector	log_comb (double n, const dvector &r)
	Log-binomial of a number with an arrays.

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Detailed Description

This file has routines for the constant type log-factorial, log-binomial, and log-gamma functions for scalar and vector arguments.

Definition in file combc.cpp.

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Function Documentation

dvector log_comb	(	double	n,
		const dvector &	r
	)

Log-binomial of a number with an arrays.

Parameters:

n	a number
r	an array

Returns:

log of the binomial coefficent

Definition at line 101 of file combc.cpp.