>There is no Maxima documentation on $abconvtest.
> Does anyone know where this function is defined? (or used?).
$abconvtest is an option variable, not a function. As far as I can tell, $abconvtest not used anywhere.
--Barton
$ grep --recursive \$abconvtest maxima-clean/*
Binary file maxima-clean/src/binary-openmcl/csimp.wx32fsl matches
Binary file maxima-clean/src/binary-openmcl/csimp.wx64fsl matches
maxima-clean/src/csimp.lisp: $abconvtest plogabs))
maxima-clean/src/csimp.lisp: $tlimswitch t $limsubst nil $abconvtest nil
maxima-clean/src/defint.lisp: (special $intanalysis $abconvtest $noprincipal $nointegrate)