Configuring Maxima output as an improper fraction?

On Fri, Jan 30, 2009 at 11:27 AM, van Nek <van.nek at arcor.de> wrote:
> ...If you really want to print the "+" here is a quick hack:
>
> (%i6) :lisp(defun $unsimplified_plus (a b) `((mplus simp) ,b ,a))
> (%i6) f(x):= unsimplified_plus(floor(x), mod(x,1))$

Be aware that any further arithmetic with the results of
unsimplified_plus may not be fully simplified.  For example,
f(-3/2)+f(3/2) => 1 - 2 + 1, not zero.

> This unsimplified "+" can be reevaluated by two single quotes:

Though two single quotes work in this case, more generally if you want
an expression resimplified, you should use expand(expr,1,1). You may
find it convenient to define resimplify(expr):=expand(expr,1,1)$

          -s

          -s