/*  snmfigcl.cpp  by K.Tsuru  */
// function ID = 111
/**************************************
SNumber class
It clears figure[].
**************************************/
#ifndef SN_H
#include "sn.h"
#endif
void SNumber::FigureClear(uint from, uint to) {
    if(to < aTail || from > aHead) return;
    figure.clear(from, to);
    if(to > aTail) {
        while(to < figure.size() && figure(to) == 0) to++;
        if(to < figure.size()) aTail = to;
        else SetZero();
    }
}