Class used for (list of) interpreter objects.
LINKAGE BOOLEAN dbOpen(si_link l, short flag, leftv u)
LINKAGE BOOLEAN dbClose(si_link l)
LINKAGE leftv dbRead1(si_link l)
LINKAGE BOOLEAN dbWrite(si_link l, leftv v)
LINKAGE leftv dbRead2(si_link l, leftv key)
const Variable & v
< [in] a sqrfree bivariate poly