vnl_cpoly_roots Class Reference

Find all the roots of a univariate polynomial with complex coefficients. More...

#include <vnl_cpoly_roots.h>

Public Member Functions
	vnl_cpoly_roots (vnl_vector< std::complex< double > > const &a)
	vnl_cpoly_roots (vnl_vector< double > const &a_real, vnl_vector< double > const &a_imag)

Public Attributes
vnl_vector< std::complex< double > >	solns

Private Member Functions
void	compute (vnl_vector< std::complex< double > > const &a)
	does the actual work. More...

Private Attributes
unsigned	N

Detailed Description

Find all the roots of a univariate polynomial with complex coefficients.

Class to find all the roots of a univariate polynomial f with complex coefficients. Currently works by computing the eigenvalues of the companion matrix of f.

The input vector a of coefficients are given to the constructor. The polynomial is f = t^N + a[0] t^{N-1} + ... + a[N-1] The roots can then be found in the 'solns' member.

Definition at line 30 of file vnl_cpoly_roots.h.

Constructor & Destructor Documentation

vnl_cpoly_roots() [1/2]

vnl_cpoly_roots::vnl_cpoly_roots

(

vnl_vector< std::complex< double > > const &

a

)

Definition at line 27 of file vnl_cpoly_roots.cxx.

vnl_cpoly_roots() [2/2]

vnl_cpoly_roots::vnl_cpoly_roots	(	vnl_vector< double > const &	a_real,
		vnl_vector< double > const &	a_imag
	)

Definition at line 34 of file vnl_cpoly_roots.cxx.

Member Function Documentation

compute()

void vnl_cpoly_roots::compute ( vnl_vector< std::complex< double > > const &  a )

private

does the actual work.

Definition at line 8 of file vnl_cpoly_roots.cxx.

Member Data Documentation

N

unsigned vnl_cpoly_roots::N

private

Definition at line 41 of file vnl_cpoly_roots.h.

solns

vnl_vector<std::complex<double> > vnl_cpoly_roots::solns

Definition at line 38 of file vnl_cpoly_roots.h.

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

• core/vnl/algo/vnl_cpoly_roots.h
• core/vnl/algo/vnl_cpoly_roots.cxx