c02aff

c02aff © Numerical Algorithms Group, 2002.

Purpose

C02AFF All zeros of complex polynomial, modified Laguerre method

Synopsis

[z,ifail] = c02aff(a<,scale,ifail>)

Description

 
 The routine attempts to find all the roots of the nth degree 
 complex 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

c02aff

Required Input Arguments:

a (2,:)                               real

Optional Input Arguments:                       <Default>

scale                                 logical  1
ifail                                 integer  -1

Output Arguments:

z (2,:)                               real
ifail                                 integer