[PURRS-devel] purrs src/alg_eq_solver.cc tests/recurrences

[Tatiana Zolo]

CVSROOT:	/cvs/purrs
Module name:	purrs
Changes by:	zolo at cs.unipr.it	2002-05-23 18:30:25

Modified files:
	src            : alg_eq_solver.cc 
	tests          : recurrences 

Log message:
	Added calls to the simplifications routines at appropriate points in
	'solve_equation_4'.
	Partially rewrote numeric tests for non vanishing of the roots of the
	auxiliary equation in 'solve_equation_4', because GiNaC's method 'is_zero()'
	is not reliable on complex expressions.

Patches:
http://www.cs.unipr.it/cgi-bin/cvsweb.cgi/purrs/src/alg_eq_solver.cc.diff?cvsroot=purrs&r1=1.18&r2=1.19
http://www.cs.unipr.it/cgi-bin/cvsweb.cgi/purrs/tests/recurrences.diff?cvsroot=purrs&r1=1.9&r2=1.10