* @param v Start of expression vector
* @param symm Root node of symmetry tree
* @return the overall sign introduced by the reordering (+1, -1 or 0)
- * or INT_MAX if nothing changed */
+ * or numeric_limits<int>::max() if nothing changed */
extern int canonicalize(exvector::iterator v, const symmetry &symm);
/** Symmetrize expression over a set of objects (symbols, indices). */