complex roots

Article View: sci.math.num-analysis

Article #785

Back to sci.math.num-analysis Previous Next

#785

From: Mark J. Encarnacion
Date: Tue, 06 Oct 1992 17:25

9 lines
981 bytes

Given a polynomial of degree n with complex coefficients, I need to compute
all n complex roots (multiple or otherwise) of this polynomials.  I tried
the code given in Numerical Recipes in C, pp. 280-282, which is supposed to
be a sure-fire technique.  However, for some polynomials (e.g. x^3 - 1) I get
wrong results.  Is it known that this code contains bugs?  If not, I must be
doing something wrong, although I used the code verbatim.  Any advice that will
help me write a C program that works will be appreciated.
Thanks,
Mark

Technical Details

Message-ID: <19921006.182543728139.NETNEWS@ALIJKU11>

Path: arc1-ca.pugleaf.net!sparky!uunet!news.univie.ac.at!alijku11!mencarna

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!sparky!uunet!news.univie.ac.at!alijku11!mencarna
Nntp-Posting-Host: 140.78.140.60
Message-ID: <19921006.182543728139.NETNEWS@ALIJKU11>
Date: Tuesday, 6 Oct 1992 18:25:43 CET
Newsgroups: sci.math.num-analysis
Sender: mencarna@risc.uni-linz.ac.at (Mark Encarnacion)
From: mencarna@risc.uni-linz.ac.at (Mark J. Encarnacion)
Distribution: world
Organization: RISC, University of Linz, Austria
Subject: complex roots
Lines: 9