id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
2734	numeric evaluation of expressions in the symbolic pre-processing	Lennart Ochel	somebody	"There are a lot of simplification rules, e.g. in ExpressionSimplify, that introduce numeric weaknesses. Just a few examples:

{{{
1/3 -> 0.3333333333333333
sqrt(2) -> 1.414213562373095
sin(2*1.23456) = 2*sin(1.23456)*cos(1.23456) -> 0.6229222061594161 = 0.6229222061594162
}}}

I think the symbolic pre-processing should not evaluate any expression numerically. Any comments?
"	defect	new	critical	Future	Frontend	trunk			Willi Braun Vitalij Ruge