michael@0: // Copyright 2009 the Sputnik authors.  All rights reserved.
michael@0: // This code is governed by the BSD license found in the LICENSE file.
michael@0: 
michael@0: /**
michael@0:  * Negating +0 produces -0, negating -0 produces +0
michael@0:  *
michael@0:  * @path ch11/11.4/11.4.7/S11.4.7_A4.2.js
michael@0:  * @description Checking Infinity
michael@0:  */
michael@0: 
michael@0: //CHECK#1
michael@0: var x = 0; 
michael@0: x = -x;
michael@0: if (x !== -0) {
michael@0:   $ERROR('#1.1: var x = 0; x = -x; x === 0. Actual: ' + (x));
michael@0: } else {
michael@0:   if (1/x !== Number.NEGATIVE_INFINITY) {
michael@0:     $ERROR('#1.2: var x = 0; x = -x; x === - 0. Actual: +0');
michael@0:   }
michael@0: }
michael@0: 
michael@0: //CHECK#2
michael@0: var x = -0; 
michael@0: x = -x;
michael@0: if (x !== 0) {
michael@0:   $ERROR('#2.1: var x = -0; x = -x; x === 0. Actual: ' + (x));
michael@0: } else {
michael@0:   if (1/x !== Number.POSITIVE_INFINITY) {
michael@0:     $ERROR('#2.2: var x = -0; x = -x; x === + 0. Actual: -0');
michael@0:   }
michael@0: }
michael@0: 
michael@0: