"Dmitry Anikin" <[EMAIL PROTECTED]> writes: > doc says that it must be > 0, or < 0, but it seems that > it returns +1 or -1. Can it be reliably used to get the sign of x: > cmp(x, 0) like pascal Sign() function does?
The doc says (http://docs.python.org/lib/built-in-funcs.html): cmp(x,y) Compare the two objects x and y and return an integer according to the outcome. The return value is negative if x < y, zero if x == y and strictly positive if x > y. > I mean, I'm pretty sure that it can be used, but is it mentioned > somewhere in language spec, or it may be implementation defined? The doc doesn't specify that it returns -1/0/+1 so by definition it's implementation defined. > If so, any other simple means of _reliably_ getting the sign? Ehh, every way I see offhand is at least a little bit messy. -- http://mail.python.org/mailman/listinfo/python-list