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
Defines
#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.

---

Define Documentation

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

Definition at line 50 of file poly_roots.cc.

#define GSL_DBL_EPSILON   2.2204460492503131e-16

Definition at line 53 of file poly_roots.cc.

#define GSL_EFAILED   5

Definition at line 61 of file poly_roots.cc.

#define GSL_EINVAL   4

Definition at line 60 of file poly_roots.cc.

Referenced by gsl_rng_memcpy(), and gsl_rng_uniform_int().

#define GSL_FAILURE   -1

Definition at line 59 of file poly_roots.cc.

#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.

#define GSL_SUCCESS   0

Definition at line 58 of file poly_roots.cc.

Referenced by gsl_rng_memcpy(), and poly_root_solve().

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

Definition at line 47 of file poly_roots.cc.

#define RADIX   2

Definition at line 55 of file poly_roots.cc.

#define RADIX2   (RADIX*RADIX)

Definition at line 56 of file poly_roots.cc.

---

Typedef Documentation

typedef double* gsl_complex_packed_ptr

Definition at line 66 of file poly_roots.cc.

---

Function Documentation

int poly_root_solve	(	Matrix &	roots,
		Vector &	coeffs
	)

Definition at line 100 of file poly_roots.cc.

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

Referenced by main(), and plevel_crossing_2d().