c02agf

c02agf © Numerical Algorithms Group, 2002.

Purpose

C02AGF All zeros of real polynomial, modified Laguerre method

Synopsis

[z,ifail] = c02agf(a<,scale,ifail>)

Description

 
 The routine attempts to find all the roots of the nth degree real
 polynomial equation
 
                      n    n-1    n-2             
              P(z)=a z +a z   +a z   +...+a   z+a =0.
                    0    1      2          n-1   n

Parameters

c02agf

Required Input Arguments:

a (:)                                 real

Optional Input Arguments:                       <Default>

scale                                 logical  1
ifail                                 integer  -1

Output Arguments:

z (2,:)                               real
ifail                                 integer