// 加

export function NumberAdd(arg1, arg2) {

  var 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

export function NumberSub(arg1, arg2) {

  var 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

export function NumberMul(arg1, arg2) {

  var m = 0;

  var s1 = arg1.toString();

  var 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);

}

/**

* 除数，被除数， 保留的小数点后的位数

*/

export function NumberDiv(arg1, arg2, digit) {

  digit = digit || 2

  var 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);

}

//处理科学计算法

export function toNonExponential(num) {

  var m = num.toExponential().match(/\d(?:\.(\d*))?e([+-]\d+)/);

  return num.toFixed(Math.max(0, (m[1] || '').length - m[2]));

}