[Patches] introducing math.rint

[Guido van Rossum]

> [Guido van Rossum]
> > I've checked this in, but I have one nagging doubt: it's not a
> > standard ANSI C function, so may not exist on all platforms?

[Tim]
> Legitimate concern -- rint is one of many functions recommended by the
> IEEE-754 std that aren't in ISO/ANSI C.  Most platforms support all of those
> one way or another now, but usually via platform-specific spellings.  This
> won't improve until C9X is adopted.  IIRC (& I have no way to check this
> right now), rint is not supported under EPOC32 (the Symbian/Psion OS that
> Duncan Booth did a port for).  To be safe, afraid this really needs
> conditional config support.

Not to worry, I've already added the necessary magic to the configure
script.

(PS Tim, did you get a chance to look at the second installment of the
cmarh.acosh/asinh patches?)

--Guido van Rossum (home page: http://www.python.org/~guido/)