maycur-business/lib/utils/formula/formularFunction/pmt.js

maycur business react components of web

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = pmt;

var _isnumber = _interopRequireDefault(require("./isnumber"));

var _error = require("./error");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

// Copyright 2015-2018 FormBucket LLC
// PMT returns a loan payment
function pmt(rate, periods, present) {
  var future = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 0;
  var type = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 0;

  if (!(0, _isnumber["default"])(rate) || !(0, _isnumber["default"])(periods)) {
    return _error.ERRORTYPES.value;
  }

  if (rate === 0) {
    return -((present + future) / periods);
  } else {
    var term = Math.pow(1 + rate, periods);

    if (type === 1) {
      return -((future * rate / (term - 1) + present * rate / (1 - 1 / term)) / (1 + rate));
    } else {
      return -(future * rate / (term - 1) + present * rate / (1 - 1 / term));
    }
  }
}