[Kst] Equation parser - a possible BUG.

George Staikos staikos at kde.org
Sat Nov 20 18:12:18 CET 2004

On Saturday 20 November 2004 12:00, Barth Netterfield wrote:
> He's right.  The parser is wrong.  '-' (and other unary operators?) should
> have the same precedence as multiplication (ie, below exponentiation). So
> we can interpret -x^2 as (-1)*x^2.  The current parser interprets it as
> (-x)^2.
> see, eg,
> http://mathforum.org/library/drmath/view/53194.html

   Yes, definitely a problem.  I will investigate on Sunday night or Monday.  
I'd like to write a unit or regression test for this first to try to make 
sure no new problems are introduced.

> critcal bug, should be fixed for 1.0.

   "must be"

George Staikos
KDE Developer				http://www.kde.org/
Staikos Computing Services Inc.		http://www.staikos.net/

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