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// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/**
 * The Identifier in a FunctionExpression can be referenced from inside the FunctionExpression's FunctionBody to allow the function calling itself recursively
 *
 * @path ch13/13.0/S13_A3_T1.js
 * @description Creating a recursive function that calculates factorial, as a variable.
 * Function call itself by it`s name
 */

var __func = function __exp__func(arg){
    if (arg === 1) {
    	return arg;
    } else {
    	return __exp__func(arg-1)*arg;
    }
};

var fact_of_3 =  __func(3);

//////////////////////////////////////////////////////////////////////////////
//CHECK#1
if (fact_of_3 !== 6) {
	$ERROR("#1: fact_of_3 === 6. Actual: fact_of_3 ==="+fact_of_3);
}
//
//////////////////////////////////////////////////////////////////////////////