code: function partial( mu, b ) {
  	var lnb = ln( 2 * b );
  	/**
  	* FUNCTION: pdf( x )
  	*	Evaluates the probability density function (PDF) for a Laplace distribution.
  	*
  	* @private
  	* @param {Number} x - input value
  	* @returns {Number} evaluated PDF
  	*/
  	return function pdf( x ) {
  		var lnl = - lnb - abs( x - mu ) / b;
  		return exp( lnl );
  	};
  }
docs: PARTIAL // 
  FUNCTION: partial( mu, b )
  Partially applies location parameter `mu` and scale parameter `b` and returns a function for evaluating the probability density function (PDF) for a Laplace distribution.
  
  @param {Number} mu - location parameter
  @param {Number} b - scale parameter
  @returns {Function} PDF