signum() not in math?

Sat Oct 13 12:44:33 EDT 2001

Fri, 12 Oct 2001 11:27:16 +0200, Dinu Gherman <gherman at darwin.in-berlin.de> pisze:

> How comes there is no sign() or signum() function in math?

You could use cmp(x,0) if it was guaranteed that it returns only
-1,0,1. Unfortunately it's not said in docs; it happens to work
though. Perhaps docs should be changed...

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