poly_roots.cc File Reference

Contains the code to determine roots of polynomials. More...

#include <iostream>
#include <cmath>
#include <stdexcept>
#include "poly_roots.h"

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Classes
struct	gsl_poly_complex_workspace

Macros
#define	MAT(m, i, j, n)   ((m)[(i)*(n) + (j)])
#define	FMAT(m, i, j, n)   ((m)[((i)-1)*(n) + ((j)-1)])
#define	GSL_DBL_EPSILON   2.2204460492503131e-16
#define	RADIX   2
#define	RADIX2   (RADIX*RADIX)
#define	GSL_SUCCESS   0
#define	GSL_FAILURE   -1
#define	GSL_EINVAL   4
#define	GSL_EFAILED   5
#define	GSL_SET_COMPLEX_PACKED(zp, n, x, y)   do {*((zp)+2*(n))=(x); *((zp)+(2*(n)+1))=(y);} while(0)

Typedefs
typedef double *	gsl_complex_packed_ptr

Functions
int	poly_root_solve (Matrix &roots, Vector &coeffs)

Detailed Description

Contains the code to determine roots of polynomials.

Code was taken from the GNU Scientific library. http://sources.redhat.com/gsl/

Author

Oliver Lemke

Date

2002-03-06

Definition in file poly_roots.cc.

Macro Definition Documentation

FMAT

#define FMAT	(		m,
			i,
			j,
			n
	)		((m)[((i)-1)*(n) + ((j)-1)])

Definition at line 50 of file poly_roots.cc.

GSL_DBL_EPSILON

#define GSL_DBL_EPSILON   2.2204460492503131e-16

Definition at line 53 of file poly_roots.cc.

GSL_EFAILED

#define GSL_EFAILED   5

Definition at line 61 of file poly_roots.cc.

GSL_EINVAL

#define GSL_EINVAL   4

Definition at line 60 of file poly_roots.cc.

GSL_FAILURE

#define GSL_FAILURE   -1

Definition at line 59 of file poly_roots.cc.

GSL_SET_COMPLEX_PACKED

#define GSL_SET_COMPLEX_PACKED	(		zp,
			n,
			x,
			y
	)		do {*((zp)+2*(n))=(x); *((zp)+(2*(n)+1))=(y);} while(0)

Definition at line 63 of file poly_roots.cc.

GSL_SUCCESS

#define GSL_SUCCESS   0

Definition at line 58 of file poly_roots.cc.

MAT

#define MAT	(		m,
			i,
			j,
			n
	)		((m)[(i)*(n) + (j)])

Definition at line 47 of file poly_roots.cc.

RADIX

#define RADIX   2

Definition at line 55 of file poly_roots.cc.

RADIX2

#define RADIX2   (RADIX*RADIX)

Definition at line 56 of file poly_roots.cc.

Typedef Documentation

gsl_complex_packed_ptr

typedef double* gsl_complex_packed_ptr

Definition at line 66 of file poly_roots.cc.

Function Documentation

poly_root_solve()

int poly_root_solve	(	Matrix &	roots,
		Vector &	coeffs
	)

Definition at line 100 of file poly_roots.cc.

References ConstVectorView::mdata, ConstMatrixView::mdata, ConstMatrixView::ncols(), ConstVectorView::nelem(), ConstMatrixView::nrows(), and w().

Referenced by main(), rslope_crossing2d(), and rslope_crossing3d().