2 #ifndef MATH_FRACBASE_H
3 #define MATH_FRACBASE_H
5 #include "math_nestinset.h"
11 class MathFracbaseInset : public MathNestInset {
16 bool idxUpDown(idx_type &, bool up) const;
18 bool idxLeft(idx_type &, pos_type &) const;
20 bool idxRight(idx_type &, pos_type &) const;