Procedure from library classify.lib (see classify_lib).
Usage:
prepRealclassify(f); f poly
Return:
a list, containing the modality of the singularity and the type of
the singularity as a string
This procedure is needed in realclassify.lib in order to avoid
classify() being called more than once.
Example:
LIB "classify.lib";
ring r = 0, (x,y,z), ds;
poly f = (x2+3y-2z)^2+xyz-(x-y3+x2z3)^3;
prepRealclassify(f);
==> [1]:
==> 0
==> [2]:
==> D[4]