EQN_SUBEXPR
newb->type = EQN_SUBEXPR;
parent->type = EQN_SUBEXPR;
while (EQN_SUBEXPR == parent->type)
} else if (bp->type == EQN_SUBEXPR) {
if (bp->parent->type == EQN_SUBEXPR && bp->next != NULL)
bp->parent->type == EQN_SUBEXPR &&
(bp->type == EQN_SUBEXPR && bp->pos != EQNPOS_SQRT &&
(bp->parent->type == EQN_SUBEXPR &&
if ((bp->parent->type == EQN_SUBEXPR && bp->prev != NULL) ||
case EQN_SUBEXPR: