ex evalf(int level = 0) const { return bp->evalf(level); }
ex evalm() const { return bp->evalm(); }
ex eval_ncmul(const exvector & v) const { return bp->eval_ncmul(v); }
+ ex eval_integ() const { return bp->eval_integ(); }
// printing
void print(const print_context & c, unsigned level = 0) const;
inline ex evalm(const ex & thisex)
{ return thisex.evalm(); }
+inline ex eval_integ(const ex & thisex)
+{ return thisex.eval_integ(); }
+
inline ex diff(const ex & thisex, const symbol & s, unsigned nth = 1)
{ return thisex.diff(s, nth); }