[Maxima] Brent's method of root finding

[Raymond Toy]

Robert Dodier wrote:
> 
> I found an implementation of Brent's algorithm in Scheme.
> http://www-swiss.ai.mit.edu/~gjs/6946/linux-install.htm
> However a comment in the source code states that it is
> also derived from Numerical Recipes. Probably there are lots of
> other implementations out there.

FWIW, netlib has a Fortran version of Brent's zero finder:

http://www.netlib.org/go/zeroin.f

if you want to translate from something else.  I'm pretty sure it's 
described in some other textbooks or papers.

Ray