Top
Back: reverse
Forward: isparam
FastBack:
FastForward:
Up: rootsur_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

D.12.8.15 nrroots

Procedure from library rootsur.lib (see rootsur_lib).

Usage:
nrroots(p); poly p

Return:
int: the number of real roots of p

Example:
 
LIB "rootsur.lib";
ring r = 0,x,dp;
poly p = (x+2)*(x-1)*(x-5);
nrroots(p);
==> 3
p = p*(x2+1);
nrroots(p);
==> 3
See also: boundposDes; sturm; sturmha.

Top Back: reverse Forward: isparam FastBack: FastForward: Up: rootsur_lib Top: Singular Manual Contents: Table of Contents Index: Index About: About this document
            User manual for Singular version 4-0-3, 2016, generated by texi2html.