vnl_fastops Class Reference

#include <vnl_fastops.h>

List of all members.

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Detailed Description

Collection of C-style matrix functions for the most time-critical applications.

In general, however one should consider using the vnl_transpose envelope-letter class to achieve the same results with about a 10% speed penalty.

Definition at line 27 of file vnl_fastops.h.

Static Public Member Functions
static void	AtA (vnl_matrix< double > &out, const vnl_matrix< double > &A)
	Compute $A^ A$.
static void	AB (vnl_matrix< double > &out, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute AxB.
static void	AtB (vnl_matrix< double > &out, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $A^ B$.
static void	AtB (vnl_vector< double > &out, const vnl_matrix< double > &A, const vnl_vector< double > &b)
	Compute $A^ b$ for vector b. out may not be b.
static void	Ab (vnl_vector< double > &out, const vnl_matrix< double > &A, const vnl_vector< double > &b)
	Compute $A b$ for vector b. out may not be b.
static void	ABt (vnl_matrix< double > &out, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $A B^$.
static double	btAb (const vnl_matrix< double > &A, const vnl_vector< double > &b)
	Compute $b^ A b$ for vector b and matrix A.
static void	ABAt (vnl_matrix< double > &out, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $A B A^$.
static void	inc_X_by_AtA (vnl_matrix< double > &X, const vnl_matrix< double > &A)
	Compute $ X += A^ A$.
static void	inc_X_by_AB (vnl_matrix< double > &X, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $X += A B$.
static void	inc_X_by_AtB (vnl_matrix< double > &X, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $X += A^ B$.
static void	inc_X_by_AtB (vnl_vector< double > &X, const vnl_matrix< double > &A, const vnl_vector< double > &b)
	Compute $X += A^ b$.
static void	inc_X_by_ABt (vnl_matrix< double > &X, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $X += A B^$.
static void	inc_X_by_ABAt (vnl_matrix< double > &X, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $X += A B A^$.
static void	dec_X_by_AtA (vnl_matrix< double > &X, const vnl_matrix< double > &A)
	Compute $ X -= A^ A$.
static void	dec_X_by_AB (vnl_matrix< double > &X, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $X -= A B$.
static void	dec_X_by_AtB (vnl_matrix< double > &X, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $X -= A^ B$.
static void	dec_X_by_AtB (vnl_vector< double > &X, const vnl_matrix< double > &A, const vnl_vector< double > &b)
	Compute $X -= A^ b$.
static void	dec_X_by_ABt (vnl_matrix< double > &X, const vnl_matrix< double > &A, const vnl_matrix< double > &B)
	Compute $X -= A B^$.
Static Private Member Functions
static double	dot (const double *a, const double *b, unsigned int n)
	Compute dot product of a and b.

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Member Function Documentation

void vnl_fastops::AtA	(	vnl_matrix< double > &	out,
		const vnl_matrix< double > &	A
	)			[static]

Compute $A^ A$.

Definition at line 18 of file vnl_fastops.cxx.

void vnl_fastops::AB	(	vnl_matrix< double > &	out,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute AxB.

Definition at line 56 of file vnl_fastops.cxx.

void vnl_fastops::AtB	(	vnl_matrix< double > &	out,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $A^ B$.

Definition at line 88 of file vnl_fastops.cxx.

void vnl_fastops::AtB	(	vnl_vector< double > &	out,
		const vnl_matrix< double > &	A,
		const vnl_vector< double > &	b
	)			[static]

Compute $A^ b$ for vector b. out may not be b.

Definition at line 120 of file vnl_fastops.cxx.

void vnl_fastops::Ab	(	vnl_vector< double > &	out,
		const vnl_matrix< double > &	A,
		const vnl_vector< double > &	b
	)			[static]

Compute $A b$ for vector b. out may not be b.

Definition at line 150 of file vnl_fastops.cxx.

void vnl_fastops::ABt	(	vnl_matrix< double > &	out,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $A B^$.

Definition at line 180 of file vnl_fastops.cxx.

double vnl_fastops::btAb	(	const vnl_matrix< double > &	A,
		const vnl_vector< double > &	b
	)			[static]

Compute $b^ A b$ for vector b and matrix A.

Definition at line 257 of file vnl_fastops.cxx.

void vnl_fastops::ABAt	(	vnl_matrix< double > &	out,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $A B A^$.

Definition at line 212 of file vnl_fastops.cxx.

void vnl_fastops::inc_X_by_AtA	(	vnl_matrix< double > &	X,
		const vnl_matrix< double > &	A
	)			[static]

Compute $ X += A^ A$.

Definition at line 286 of file vnl_fastops.cxx.

void vnl_fastops::inc_X_by_AB	(	vnl_matrix< double > &	X,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $X += A B$.

Definition at line 325 of file vnl_fastops.cxx.

void vnl_fastops::inc_X_by_AtB	(	vnl_matrix< double > &	X,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $X += A^ B$.

Definition at line 391 of file vnl_fastops.cxx.

void vnl_fastops::inc_X_by_AtB	(	vnl_vector< double > &	X,
		const vnl_matrix< double > &	A,
		const vnl_vector< double > &	b
	)			[static]

Compute $X += A^ b$.

Definition at line 463 of file vnl_fastops.cxx.

void vnl_fastops::inc_X_by_ABt	(	vnl_matrix< double > &	X,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $X += A B^$.

Definition at line 595 of file vnl_fastops.cxx.

void vnl_fastops::inc_X_by_ABAt	(	vnl_matrix< double > &	X,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $X += A B A^$.

Definition at line 694 of file vnl_fastops.cxx.

void vnl_fastops::dec_X_by_AtA	(	vnl_matrix< double > &	X,
		const vnl_matrix< double > &	A
	)			[static]

Compute $ X -= A^ A$.

Definition at line 529 of file vnl_fastops.cxx.

void vnl_fastops::dec_X_by_AB	(	vnl_matrix< double > &	X,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $X -= A B$.

Definition at line 358 of file vnl_fastops.cxx.

void vnl_fastops::dec_X_by_AtB	(	vnl_matrix< double > &	X,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $X -= A^ B$.

Definition at line 427 of file vnl_fastops.cxx.

void vnl_fastops::dec_X_by_AtB	(	vnl_vector< double > &	X,
		const vnl_matrix< double > &	A,
		const vnl_vector< double > &	b
	)			[static]

Compute $X -= A^ b$.

Definition at line 496 of file vnl_fastops.cxx.

void vnl_fastops::dec_X_by_ABt	(	vnl_matrix< double > &	X,
		const vnl_matrix< double > &	A,
		const vnl_matrix< double > &	B
	)			[static]

Compute $X -= A B^$.

Definition at line 644 of file vnl_fastops.cxx.

double vnl_fastops::dot	(	const double *	a,
		const double *	b,
		unsigned int	n
	)			[static, private]

Compute dot product of a and b.

Definition at line 568 of file vnl_fastops.cxx.

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

• core/vnl/vnl_fastops.h
• core/vnl/vnl_fastops.cxx

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