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_T7.js
michael@0:  * @description The mathematical difference of two nonzero finite values of the same magnitude and same sign is +0
michael@0:  */
michael@0: 
michael@0: //CHECK#1
michael@0: if (Number.MIN_VALUE - Number.MIN_VALUE !== +0) {  
michael@0:   $ERROR('#1.1: Number.MIN_VALUE - Number.MIN_VALUE === 0. Actual: ' + (Number.MIN_VALUE - Number.MIN_VALUE));
michael@0: } else {
michael@0:   if (1 / (Number.MIN_VALUE - Number.MIN_VALUE) !== Number.POSITIVE_INFINITY) {
michael@0:     $ERROR('#1.2: Number.MIN_VALUE - Number.MIN_VALUE === + 0. Actual: -0');
michael@0:   }
michael@0: }
michael@0: 
michael@0: //CHECK#2
michael@0: if (-Number.MAX_VALUE - -Number.MAX_VALUE !== +0) {  
michael@0:   $ERROR('#2.2: -Number.MAX_VALUE - -Number.MAX_VALUE === 0. Actual: ' + (-Number.MAX_VALUE - -Number.MAX_VALUE));
michael@0: } else {
michael@0:   if (1 / (-Number.MAX_VALUE - -Number.MAX_VALUE) !== Number.POSITIVE_INFINITY) {
michael@0:     $ERROR('#2.1: -Number.MAX_VALUE - -Number.MAX_VALUE === + 0. Actual: -0');
michael@0:   }
michael@0: }
michael@0: 
michael@0: //CHECK#3
michael@0: if (1 / Number.MAX_VALUE - 1 / Number.MAX_VALUE !== +0) {  
michael@0:   $ERROR('#3.1: 1 / Number.MAX_VALUE - 1 / Number.MAX_VALUE === 0. Actual: ' + (1 / Number.MAX_VALUE - 1 / Number.MAX_VALUE));
michael@0: } else {
michael@0:   if (1 / (1 / Number.MAX_VALUE - 1 / Number.MAX_VALUE) !== Number.POSITIVE_INFINITY) {
michael@0:     $ERROR('#3.2: 1 / Number.MAX_VALUE - 1 / Number.MAX_VALUE === + 0. Actual: -0');
michael@0:   }
michael@0: }
michael@0: