combv.cpp File Reference

(* $Id$)

$Id$ Author: Unknown More...

#include <fvar.hpp>

Go to the source code of this file.

Functions
dvariable	factln (const dvariable &n)
	Log-factorial .
double	factln (double n)
	Log-factorial .
dvar_vector	factln (const dvar_vector &r)
	Log-factorial of an array.
dvariable	gammln (const dvariable &xx)
dvar_vector	gammln (const dvar_vector &v)
	Log-Gamma of an array.
dvariable	gammln (const prevariable &z)
static dvariable	gammlnguts (const prevariable _z)
dvariable	log_comb (const dvariable &n, double k)
	Log of the binomial coefficent i.e log of 'n choose k'.
dvariable	log_comb (const dvariable &n, const dvariable &k)
	Log of the binomial coefficent i.e log of 'n choose k'.
dvariable	log_comb (double n, const dvariable &k)
	Log of the binomial coefficent i.e log of 'n choose k'.
dvar_vector	log_comb (const dvar_vector &n, const dvar_vector &r)
	Log-binomial of two arrays.
dvar_vector	log_comb (const dvector &n, const dvar_vector &r)
	Log-binomial of a number with an arrays.
dvar_vector	log_comb (const dvar_vector &n, const dvector &r)
	Log-binomial of two arrays.
dvar_vector	log_comb (const dvariable &n, const dvector &r)
	Log-binomial of a number with an arrays.
dvar_vector	log_comb (const dvariable &n, const dvar_vector &r)
	Log-binomial of a number with an arrays.
dvar_vector	log_comb (double n, const dvar_vector &r)
	Log-binomial of a number with an arrays.

---

Detailed Description

$Id$ Author: Unknown

This file has routines for the variable type log-factorial, log-binomial, and log-gamma functions

Definition in file combv.cpp.

---

Function Documentation

dvariable factln

(

const dvariable &

n

)

Log-factorial .

Parameters:

n

a number

Returns:

log of the factorial

Definition at line 59 of file combv.cpp.

dvar_vector factln

(

const dvar_vector &

r

)

Log-factorial of an array.

Parameters:

r

an array

Returns:

log of the factorial

Definition at line 187 of file combv.cpp.

dvariable gammln

(

const dvariable &

xx

)

dvar_vector gammln

(

const dvar_vector &

v

)

Log-Gamma of an array.

Parameters:

v

an array

Returns:

log of the factorial

Definition at line 226 of file combv.cpp.

dvariable gammln

(

const prevariable &

z

)

Definition at line 282 of file combv.cpp.

static dvariable gammlnguts

(

const prevariable

_z

)

[static]

Definition at line 240 of file combv.cpp.

Referenced by gammln().

dvariable log_comb	(	const dvariable &	n,
		double	k
	)

Log of the binomial coefficent i.e log of 'n choose k'.

Parameters:

n	a number
k	a number

Returns:

log of the binomial coefficent

Definition at line 24 of file combv.cpp.

dvariable log_comb	(	const dvariable &	n,
		const dvariable &	k
	)

Log of the binomial coefficent i.e log of 'n choose k'.

Parameters:

n	a number
k	a number

Returns:

log of the binomial coefficent

Definition at line 36 of file combv.cpp.

dvariable log_comb	(	double	n,
		const dvariable &	k
	)

Log of the binomial coefficent i.e log of 'n choose k'.

Parameters:

n	a number
k	a number

Returns:

log of the binomial coefficent

Definition at line 49 of file combv.cpp.

dvar_vector log_comb	(	const dvar_vector &	n,
		const dvar_vector &	r
	)

Log-binomial of two arrays.

Parameters:

n	an array
r	an array

Returns:

log of the binomial coefficent

Definition at line 70 of file combv.cpp.

dvar_vector log_comb	(	const dvector &	n,
		const dvar_vector &	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 96 of file combv.cpp.

dvar_vector log_comb	(	const dvar_vector &	n,
		const dvector &	r
	)

Log-binomial of two arrays.

Parameters:

n	an array
r	an array

Returns:

log of the binomial coefficent

Definition at line 122 of file combv.cpp.

dvar_vector log_comb	(	const dvariable &	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 148 of file combv.cpp.

dvar_vector log_comb	(	const dvariable &	n,
		const dvar_vector &	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 168 of file combv.cpp.

dvar_vector log_comb	(	double	n,
		const dvar_vector &	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 207 of file combv.cpp.