breaking up 1 BIG C source file

[ACMFIU]

Let's say I have one Big C source file consisting of functions:
	a, b, c, d, e, f, g, h, i

And let's say that (a, b, c) do one thing, (d, e, f) do another, and
(g, h, i) do another. Now, i want to split these three groups into three
files. Is there a program that I can give the names of the functions and
it will will split this big C file into smaller ones?

albert chin