Exactly, I intended a speed-up by means of using hardware
floating-point numbers. (While integers are more desirable.)
I have found the dgemm function in the lapack distribution.
How do I properly invoke it. ?dgemm does not seem to work.
By the way, load("lapack") does not finish in wxMaxima.
I use Maxima 5.19.2 and Maxima 5.22.1 in Windows XP.