// utility functions
-/** Return the constant object handled by an ex. Deprecated: use ex_to<constant>().
- * This is unsafe: you need to check the type first. */
-inline const constant &ex_to_constant(const ex &e)
-{
- return static_cast<const constant &>(*e.bp);
-}
-
/** Specialization of is_exactly_a<constant>(obj) for constant objects. */
template<> inline bool is_exactly_a<constant>(const basic & obj)
{