There is a definition for the signum function for a complex argument.
sign( z ) = z / |z| for all z != 0
sign( 0 ) = 0
See e.g. http://en.wikipedia.org/wiki/Sign_function
Shouldn't be too difficult to implement.
-Original Message-
From: Carl Mäsak [mailto:[EMAIL PROTECTED]
Sent:
If a programmer calls a function with an argument that has a
well-established type, s/he may very well expect a result according
to that type, (considering that overloading isn't just a word for not
caring about type).
So, calling sqrt with a real 0, should not come back with a complex
number.
Larry Wall wrote:
but probably what the financial insitutions
want is special fixed-point types that assume a divisor anyway.
Would any financial institution care to comment?
Some (VAT tax) computations are defined, by law, to be executed
with a cetain precision. You have to be able to
The pugscode page http://www.pugscode.org/ contains the hint
Periodic releases will appear on CPAN under the Perl6-Pugs
http://search.cpan.org/dist/Perl6-Pugs/ namespace.
Is this still true? The latest version Perl6-Pugs-6.2.13 from October
2006 didn't even compile.
kr
Wolfgang
