casacore::Combinatorics Class Reference

Combinatorics related functions. More...

#include <Combinatorics.h>

List of all members.

Static Public Member Functions
static uInt	factorial (const uInt n)
	Get n!
static uInt	choose (const uInt n, const uInt k)
	"n choose k" = n!/(k!(n-k)!) Exception is thrown if k > n.
Static Private Member Functions
static void	fillCache (const uInt n)
Static Private Attributes
static Vector< uInt >	_factorialCache
static volatile uInt	_factorialCacheSize
static Mutex	theirMutex

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Detailed Description

Combinatorics related functions.

Intended use:

Public interface

Review Status

Date Reviewed:

yyyy/mm/dd

Prerequisite

• Vector
• Array

Etymology

self-explanatory

Synopsis

Various factorial and combinatorical functions.

Motivation

Binomial coefficients needed for Images/ImageProfileFitter

Definition at line 67 of file Combinatorics.h.

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Member Function Documentation

static uInt casacore::Combinatorics::choose	(	const uInt	n,
		const uInt	k
	)			[static]

"n choose k" = n!/(k!(n-k)!) Exception is thrown if k > n.

static uInt casacore::Combinatorics::factorial

(

const uInt

n

)

[inline, static]

Get n!

Definition at line 72 of file Combinatorics.h.

References _factorialCache, _factorialCacheSize, and fillCache().

static void casacore::Combinatorics::fillCache

(

const uInt

n

)

[static, private]

Referenced by factorial().

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Member Data Documentation

Vector<uInt> casacore::Combinatorics::_factorialCache [static, private]

Definition at line 86 of file Combinatorics.h.

Referenced by factorial().

volatile uInt casacore::Combinatorics::_factorialCacheSize [static, private]

Definition at line 87 of file Combinatorics.h.

Referenced by factorial().

Mutex casacore::Combinatorics::theirMutex [static, private]

Definition at line 88 of file Combinatorics.h.

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The documentation for this class was generated from the following file:

• casacore/scimath/Mathematics/Combinatorics.h