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vnl_matrix_exp.h

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00001 #ifndef vnl_matrix_exp_h_
00002 #define vnl_matrix_exp_h_
00003 // This is vxl/vnl/vnl_matrix_exp.h
00004 
00005 //: \file
00006 //  \brief Compute the exponential of a square matrix
00007 //  \author fsm@robots.ox.ac.uk
00008 // Compute the exponential of a square matrix, by summing its
00009 // exponential series $exp(X) = \sum_{n \ge 0} X^n/n!$ till a
00010 // convergence requirement is met.
00011 //
00012 // Many improvements are possible.
00013 
00014 // Modifications LSB (Manchester) 23/1/01
00015 
00016 
00017 
00018 #include <vnl/vnl_matrix.h>
00019 
00020 //: Compute the exponential of a sqaure matrix - fiddly form
00021 template <class T>
00022 bool vnl_matrix_exp(vnl_matrix<T> const &X, vnl_matrix<T> &expX, double max_err);
00023 
00024 
00025 //: Compute the exponential of a sqaure matrix - easy form.
00026 template <class T>
00027 vnl_matrix<T> vnl_matrix_exp(vnl_matrix<T> const &X);
00028 
00029 #endif // vnl_matrix_exp_h_

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