常用日期函数使用结合

static int MthDiff1(date d1, date d2)
{
    int daysDiff = d1 - d2 - 1;

    if (daysDiff >= 0)
        return (year(num2date(daysDiff)) - 1900)*12 + mthofyr(num2date(daysDiff));
    else
        return -1 * (year(num2date(-1 * daysDiff)) - 1900) * 12 + mthofyr(num2date(daysDiff)) ;
}




static int MthDiff2(date d1, date d2)
{
    ;
    return year(d1) * 12 + mthofyr(d1) - year(d2) * 12 - mthofyr(d2) ;

}

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