var root = require('./_root'),

toInteger = require('./toInteger'),
toNumber = require('./toNumber'),
toString = require('./toString');

/* Built-in method references for those with the same name as other `lodash` methods. */ var nativeIsFinite = root.isFinite,

nativeMin = Math.min;

/**

* Creates a function like `_.round`.
*
* @private
* @param {string} methodName The name of the `Math` method to use when rounding.
* @returns {Function} Returns the new round function.
*/

function createRound(methodName) {

var func = Math[methodName];
return function(number, precision) {
  number = toNumber(number);
  precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
  if (precision && nativeIsFinite(number)) {
    // Shift with exponential notation to avoid floating-point issues.
    // See [MDN](https://mdn.io/round#Examples) for more details.
    var pair = (toString(number) + 'e').split('e'),
        value = func(pair[0] + 'e' + (+pair[1] + precision));

    pair = (toString(value) + 'e').split('e');
    return +(pair[0] + 'e' + (+pair[1] - precision));
  }
  return func(number);
};

}

module.exports = createRound;