[ENH] Point>>sign

ducasse at iam.unibe.ch ducasse at iam.unibe.ch
Thu Aug 1 17:40:11 UTC 2002


from preamble:

"Change Set:		Point>>sign
Date:			1 August 2002
Author:			stephane ducasse

define the method sign returning a point representing the sign of the
receiver constituents. 
 
Certain methods often accept aPoint or a number but sign was not defined
on Point reducing the polymorphism between number and points. 
"!
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