IT++ 4.3.1
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 dht(), and itpp::Vec< Num_T >::size().

Referenced by dht(), and 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, levels2bits(), itpp::Vec< Num_T >::set_size(), and itpp::Vec< Num_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, levels2bits(), and itpp::Vec< Num_T >::size().

Referenced by dht2(), and 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 dwht(), and itpp::Vec< Num_T >::size().

Referenced by 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 bitrv(), and 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 bitrv(), and self_dht().

Referenced by dwht2().

◆ dht2()

template<class T>
Mat< T > itpp::dht2 ( const Mat< T > & m)

◆ dwht2()

template<class T>
Mat< T > itpp::dwht2 ( const Mat< T > & m)