zsolve_cubic.cxx File Reference

#include <math.h>
#include <gsl/gsl_math.h>
#include <gsl/gsl_complex.h>
#include <gsl/gsl_poly.h>

Go to the source code of this file.

Defines
#define	SWAP(a, b)   do { double tmp = b ; b = a ; a = tmp ; } while(0)
Functions
int	gsl_poly_complex_solve_cubic (double a, double b, double c, gsl_complex *z0, gsl_complex *z1, gsl_complex *z2)

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Define Documentation

#define SWAP	(	a,
		b		)	do { double tmp = b ; b = a ; a = tmp ; } while(0)

Definition at line 28 of file zsolve_cubic.cxx.

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Function Documentation

int gsl_poly_complex_solve_cubic	(	double	a,
		double	b,
		double	c,
		gsl_complex *	z0,
		gsl_complex *	z1,
		gsl_complex *	z2
	)

Definition at line 31 of file zsolve_cubic.cxx.

References A, acos(), B, cos(), ROOT::Math::fabs(), M_PI, norm(), pow(), ROOT::Math::Cephes::Q, R, r1, r2, sqrt(), SWAP, and theta.

Referenced by ROOT::Math::Polynomial::FindRoots().

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