On Thu, Nov 20, 2008 at 04:31:22PM +0100, Carl Mäsak wrote: : Mark (>): : > I think the most sensible thing is to be consistent. sgn() fails for : > non-real input as long as sqrt() returns NaN for negative input. : > Change the latter behavior (via a pragma or whatever) so that sqrt() : > returns complex numbers, and then sgn() should start behaving on such : > numbers. : : I like that. Both sign() and sqrt() will then behave like they usually : do, without complex surprises. But for those who want the generalized : behvaiour, it's only a pragma away.
Doesn't really need a pragma, just import an appropriate multi. Larry
