quartic.c File Reference

Solve quartic and cubic equations-. More...

#include "pluto.h"

Functions
int	QuarticSolve (double b, double c, double d, double e, double *z)
int	CubicSolve (double b, double c, double d, double z[])

Detailed Description

Author

A. Mignone (migno.nosp@m.ne@p.nosp@m.h.uni.nosp@m.to.i.nosp@m.t)

Date

Sept 10, 2012

Function Documentation

int CubicSolve	(	double	b,
		double	c,
		double	d,
		double	z[]
	)

Solve a cubic equation in the form

For its purpose, it is assumed that ALL roots are double. This makes things faster.

Parameters

[in]	b	coefficient of the cubic
[in]	c	coefficient of the cubic
[in]	d	coefficient of the cubic
[out]	z	vector containing the roots of the cubic. Roots should be sorted in increasing order.

Reference: http://www.1728.com/cubic2.htm

Returns

Return 0 on success.

int QuarticSolve	(	double	b,
		double	c,
		double	d,
		double	e,
		double *	z
	)

Solve a quartic equation in the form

For its purpose, it is assumed that ALL roots are double. This makes things faster.

Parameters

[in]	b	coefficient of the quartic
[in]	c	coefficient of the quartic
[in]	d	coefficient of the quartic
[in]	e	coefficient of the quartic
[out]	z	vector containing the (double) roots of the quartic

Reference:

http://www.1728.com/quartic2.htm

Returns

Return 0 on success.