[Maxima] pw.mac version 2.3.1
fateman at cs.berkeley.edu
Sun Dec 21 08:57:56 CST 2008
Richard Hennessy wrote:
> "Numerical indecision". I want x*pwdelta(x) to return 0, that would be my decision.
That is, x*pwdelta(y) --> when x=y. The decision, is x=y may not be
obvious in some instances. For example, x and y may be complicated
expressions or may be numerical values that are very slightly
different. (In Mathematica, there is a notion of accuracy associated
with software floats -- two numbers may be deemed equal if their
uncertainty is sufficiently large, even if they are not identical).
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