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From: aet@felix.ee.mu.OZ.AU (bert)
Newsgroups: comp.lang.c,comp.lang.functional,comp.theory,aus.flame
Subject: function composition in C
Message-ID: <6873@munnari.oz.au>
Date: 25 Feb 91 05:21:30 GMT
Sender: news@cs.mu.oz.au
Reply-To: aet@felix.ee.mu.OZ.AU (bert)
Organization: Dept. of Electrical Engineering, University of Melbourne
Lines: 19


	Does anyone know how to write a compose function in C,
without writing a Scheme interpreter to do it in.

A call should look something like this:
	(compose(sqr,cube)) (2)
which would evaluate to 64.

	"compose" is a one-liner in any functional language,
but I suspect that it is, given the above constraint, impossible in C.
(then again, I'm just an undergrad, so what would I know :-)

	Feel free to use pointers wherever they seem appropriate.
	(so the above call could look like:
	(*compose(&sqr,&cube)) (2)	   )

	Many thanks for everyone's helpful comments!

		Bert Thompson.


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