text: /**
   * @author       Richard Davey <rich@photonstorm.com>
   * @copyright    2020 Photon Storm Ltd.
   * @license      {@link https://opensource.org/licenses/MIT|MIT License}
   */
  
  /**
   * Circular ease-in.
   *
   * @function Phaser.Math.Easing.Circular.In
   * @since 3.0.0
   *
   * @param {number} v - The value to be tweened.
   *
   * @return {number} The tweened value.
   */
  var In = function (v)
  {
      return 1 - Math.sqrt(1 - v * v);
  };
  
  module.exports = In;
  