On 9/10/07, Stavros Macrakis <macrakis at alum.mit.edu> wrote:
> I don't have this problem in the configuration I'm running (Maxima 5.12.0, GCL,
> Windows XP, gnuplot, plot2d(integrate(exp(-x^2),x),[x,-5,5],[y,-1,1])).
It turns out $ERF doesn't evaluate to a number, unlike many other
built-in functions. This is corrected by putting $ERF on the list of functions
in src/mlisp.lisp which equate verb forms of some functions
to their noun forms. (I posted a patch elsewhere in this thread.)
And this bug was tickled by a recent change in COERCE-FLOAT-FUN
which added (NOUNSFLAG T) to the existing (LET (($NUMER T) ...).
Robert