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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.

/**
 * Closures are admitted
 *
 * @path ch13/S13_A18.js
 * @description Using a function declaration as a function parameter
 */

//////////////////////////////////////////////////////////////////////////////
//CHECK#1
if (typeof sinx !== 'undefined') {
	$ERROR('#1: typeof sinx === \'undefined\'. Actual: typeof sinx ==='+typeof sinx);
}
//
//////////////////////////////////////////////////////////////////////////////

var __val = function derivative(f, dx) {
    return function(x) {
      return (f(x + dx) - f(x)) / dx;
    };
}(function sinx(x){return Math.sin(x);},.0001)(0.5);

//////////////////////////////////////////////////////////////////////////////
//CHECK#2
if (typeof sinx !== 'undefined') {
	$ERROR('#2: typeof sinx === \'undefined\'. Actual: typeof sinx ==='+typeof sinx);
}
//
//////////////////////////////////////////////////////////////////////////////