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:  * Operator x - y produces the same result as x + (-y)
michael@0:  *
michael@0:  * @path ch11/11.6/11.6.2/S11.6.2_A4_T4.js
michael@0:  * @description The difference of an infinity and a finite value is equal to infinity of appropriate sign
michael@0:  */
michael@0: 
michael@0: //CHECK#1
michael@0: if (Number.POSITIVE_INFINITY - 1 !== Number.POSITIVE_INFINITY ) {
michael@0:   $ERROR('#1: Infinity - 1 === Infinity. Actual: ' + (Infinity - 1));
michael@0: }
michael@0: 
michael@0: //CHECK#2
michael@0: if (-1 - Number.POSITIVE_INFINITY !== Number.NEGATIVE_INFINITY ) {
michael@0:   $ERROR('#2: -1 - Infinity === -Infinity. Actual: ' + (-1 - Infinity));
michael@0: }
michael@0: 
michael@0: //CHECK#3
michael@0: if (Number.NEGATIVE_INFINITY - 1 !== Number.NEGATIVE_INFINITY ) {
michael@0:   $ERROR('#3: -Infinity - 1 === -Infinity. Actual: ' + (-Infinity - 1));
michael@0: }
michael@0: 
michael@0: //CHECK#4
michael@0: if (-1 - Number.NEGATIVE_INFINITY !== Number.POSITIVE_INFINITY ) {
michael@0:   $ERROR('#4: -1 - -Infinity === Infinity. Actual: ' + (-1 - -Infinity));
michael@0: }
michael@0: 
michael@0: //CHECK#5
michael@0: if (Number.POSITIVE_INFINITY - Number.MAX_VALUE !== Number.POSITIVE_INFINITY ) {
michael@0:   $ERROR('#5: Infinity - Number.MAX_VALUE === Infinity. Actual: ' + (Infinity - Number.MAX_VALUE));
michael@0: }
michael@0: 
michael@0: //CHECK#6
michael@0: if (-Number.MAX_VALUE - Number.POSITIVE_INFINITY !== Number.NEGATIVE_INFINITY ) {
michael@0:   $ERROR('#6: -Number.MAX_VALUE - Infinity === I-nfinity. Actual: ' + (-Number.MAX_VALUE - Infinity));
michael@0: }
michael@0: 
michael@0: //CHECK#7
michael@0: if (Number.NEGATIVE_INFINITY - Number.MAX_VALUE !== Number.NEGATIVE_INFINITY ) {
michael@0:   $ERROR('#7: -Infinity - Number.MAX_VALUE === -Infinity. Actual: ' + (-Infinity - Number.MAX_VALUE));
michael@0: }
michael@0: 
michael@0: //CHECK#8
michael@0: if (-Number.MAX_VALUE - Number.NEGATIVE_INFINITY !== Number.POSITIVE_INFINITY ) {
michael@0:   $ERROR('#8: -Number.MAX_VALUE - -Infinity === Infinity. Actual: ' + (-Number.MAX_VALUE - -Infinity));
michael@0: }
michael@0: 
michael@0: 
michael@0: 
michael@0: