/** 加法 */
export function NumberAdd(arg1, arg2) {
  let r1, r2, m, n;
  try {
    r1 = arg1.toString().split(".")[1].length
  } catch (e) {
    r1 = 0
  }
  try {
    r2 = arg2.toString().split(".")[1].length
  } catch (e) {
    r2 = 0
  }
  m = Math.pow(10, Math.max(r1, r2))
  n = (r1 >= r2) ? r1 : r2
  return ((arg1 * m + arg2 * m) / m).toFixed(n)
}
/** 减法 */
export function NumberSub(arg1, arg2) {
  let re1, re2, m, n;
  try {
    re1 = arg1.toString().split(".")[1].length
  } catch (e) {
    re1 = 0;
  }
  try {
    re2 = arg2.toString().split(".")[1].length
  } catch (e) {
    re2 = 0
  }
  m = Math.pow(10, Math.max(re1, re2));
  n = (re1 >= re2) ? re1 : re2;
  return ((arg1 * m - arg2 * m) / m).toFixed(n)
}
/** 乘法 */
export function NumberMul(arg1, arg2) {
  let m = 0;
  const s1 = arg1.toString();
  const s2 = arg2.toString();
  try {
    m += s1.split('.')[1].length
  } catch (e) {}
  try {
    m += s2.split('.')[1].length
  } catch (e) {}

  return Number(s1.replace('.', '')) * Number(s2.replace('.', '')) / Math.pow(10, m)
}

/** 除法 */
export function NumberDiv(arg1,arg2,digit){
  let t1 = 0, t2 = 0, r1, r2;
  try{t1=arg1.toString().split(".")[1].length}catch(e){}
  try{t2=arg2.toString().split(".")[1].length}catch(e){}
  r1=Number(arg1.toString().replace(".",""))
  r2=Number(arg2.toString().replace(".",""))
  //获取小数点后的计算值
  var result= ((r1/r2)*Math.pow(10,t2-t1)).toString()
  var result2=result.split(".")[1]
  result2=result2.substring(0,digit>result2.length?result2.length:digit)
  return Number(result.split(".")[0]+"."+result2)
}