node/tools/eslint/node_modules/lodash/internal/createRound.js
Michaël Zasso 2d441493a4 tools: update eslint to v1.10.3
PR-URL: https://github.com/nodejs/io.js/pull/2286
Reviewed-By: Roman Reiss <me@silverwind.io>
2016-01-13 23:15:39 +01:00

23 lines
620 B
JavaScript

/** Native method references. */
var pow = Math.pow;
/**
* Creates a `_.ceil`, `_.floor`, or `_.round` function.
*
* @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) {
precision = precision === undefined ? 0 : (+precision || 0);
if (precision) {
precision = pow(10, precision);
return func(number * precision) / precision;
}
return func(number);
};
}
module.exports = createRound;