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Fast Hadamard Transforms


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.

Function Documentation

template<class T>
Vec< T > itpp::dht const Vec< T > &  v  ) 
 

Fast Hadamard Transform.

Definition at line 615 of file transforms.cpp.

References itpp::Vec< Num_T >::size().

Referenced by itpp::dwht().

template<class T>
void itpp::dht const Vec< T > &  vin,
Vec< T > &  vout
 

Fast Hadamard Transform.

Definition at line 645 of file transforms.cpp.

References it_assert1, itpp::levels2bits(), itpp::Vec< Num_T >::set_size(), and itpp::Vec< Num_T >::size().

template<class T>
void itpp::self_dht Vec< T > &  v  ) 
 

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

Definition at line 682 of file transforms.cpp.

References it_assert1, itpp::levels2bits(), and itpp::Vec< Num_T >::size().

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

template<class T>
Vec< T > itpp::dwht const Vec< T > &  v  ) 
 

Fast Walsh Hadamard Transform.

Definition at line 710 of file transforms.cpp.

References itpp::Vec< Num_T >::size().

template<class T>
void itpp::dwht const Vec< T > &  vin,
Vec< T > &  vout
 

Fast Walsh Hadamard Transform.

Definition at line 720 of file transforms.cpp.

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

template<class T>
void itpp::self_dwht Vec< T > &  v  ) 
 

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

Definition at line 728 of file transforms.cpp.

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

Referenced by itpp::dwht2().

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

Fast 2D Hadamard Transform.

Definition at line 735 of file transforms.cpp.

References itpp::Mat< Num_T >::cols(), itpp::Mat< Num_T >::get_row(), itpp::Mat< Num_T >::rows(), and itpp::self_dht().

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

Fast 2D Walsh Hadamard Transform.

Definition at line 756 of file transforms.cpp.

References itpp::Mat< Num_T >::cols(), itpp::Mat< Num_T >::get_row(), itpp::Mat< Num_T >::rows(), and itpp::self_dwht().

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