Fast Hadamard Transform (FHT)

Functions
template<class T >
Vec< T >	itpp::dht (const Vec< T > &v)
	Fast Hadamard Transform.
template<class T >
void	itpp::dht (const Vec< T > &vin, Vec< T > &vout)
	Fast Hadamard Transform.
template<class T >
void	itpp::self_dht (Vec< T > &v)
	Fast Hadamard Transform - memory efficient. Stores the result in v.
template<class T >
Vec< T >	itpp::dwht (const Vec< T > &v)
	Fast Walsh Hadamard Transform.
template<class T >
void	itpp::dwht (const Vec< T > &vin, Vec< T > &vout)
	Fast Walsh Hadamard Transform.
template<class T >
void	itpp::self_dwht (Vec< T > &v)
	Fast Walsh Hadamard Transform - memory efficient (result in v)
template<class T >
Mat< T >	itpp::dht2 (const Mat< T > &m)
	Fast 2D Hadamard Transform.
template<class T >
Mat< T >	itpp::dwht2 (const Mat< T > &m)
	Fast 2D Walsh Hadamard Transform.

Detailed Description

Function Documentation

dht() [1/2]

template<class T >

Vec< T > itpp::dht

(

const Vec< T > &

v

)

Fast Hadamard Transform.

Definition at line 243 of file transforms.h.

References itpp::dht(), and itpp::Array< T >::size().

Referenced by itpp::dht(), and itpp::dwht().

dht() [2/2]

template<class T >

void itpp::dht	(	const Vec< T > &	vin,
		Vec< T > &	vout
	)

Fast Hadamard Transform.

Definition at line 273 of file transforms.h.

References it_assert_debug, itpp::levels2bits(), itpp::Array< T >::set_size(), and itpp::Array< T >::size().

self_dht()

template<class T >

void itpp::self_dht

(

Vec< T > &

v

)

Fast Hadamard Transform - memory efficient. Stores the result in v.

Definition at line 307 of file transforms.h.

References it_assert_debug, itpp::levels2bits(), and itpp::Array< T >::size().

Referenced by itpp::dht2(), and itpp::self_dwht().

dwht() [1/2]

template<class T >

Vec< T > itpp::dwht

(

const Vec< T > &

v

)

Fast Walsh Hadamard Transform.

Definition at line 333 of file transforms.h.

References itpp::dwht(), and itpp::Array< T >::size().

Referenced by itpp::dwht().

dwht() [2/2]

template<class T >

void itpp::dwht	(	const Vec< T > &	vin,
		Vec< T > &	vout
	)

Fast Walsh Hadamard Transform.

Definition at line 341 of file transforms.h.

References itpp::bitrv(), and itpp::dht().

self_dwht()

template<class T >

void itpp::self_dwht

(

Vec< T > &

v

)

Fast Walsh Hadamard Transform - memory efficient (result in v)

Definition at line 349 of file transforms.h.

References itpp::bitrv(), and itpp::self_dht().

Referenced by itpp::dwht2().

dht2()

template<class T >

Mat< T > itpp::dht2

(

const Mat< T > &

m

)

Fast 2D Hadamard Transform.

Definition at line 356 of file transforms.h.

References itpp::self_dht(), and itpp::transpose().

dwht2()

template<class T >

Mat< T > itpp::dwht2

(

const Mat< T > &

m

)

Fast 2D Walsh Hadamard Transform.

Definition at line 376 of file transforms.h.

References itpp::self_dwht(), and itpp::transpose().