S11.6.1_A4_T5.js (1363B)
1 // Copyright 2009 the Sputnik authors. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 info: | 6 The result of an addition is determined using the rules of IEEE 754 7 double-precision arithmetics 8 es5id: 11.6.1_A4_T5 9 description: > 10 The sum of two negative zeros is -0. The sum of two positive 11 zeros, or of two zeros of opposite sign is +0 12 ---*/ 13 14 //CHECK#1 15 if (-0 + -0 !== -0 ) { 16 throw new Test262Error('#1.1: -0 + -0 === 0. Actual: ' + (-0 + -0)); 17 } else { 18 if (1 / (-0 + -0) !== Number.NEGATIVE_INFINITY) { 19 throw new Test262Error('#1.1: -0 + -0 === - 0. Actual: +0'); 20 } 21 } 22 23 //CHECK#2 24 if (0 + -0 !== 0 ) { 25 throw new Test262Error('#2.1: 0 + -0 === 0. Actual: ' + (0 + -0)); 26 } else { 27 if (1 / (0 + -0) !== Number.POSITIVE_INFINITY) { 28 throw new Test262Error('#2.2: 0 + -0 === + 0. Actual: -0'); 29 } 30 } 31 32 //CHECK#3 33 if (-0 + 0 !== 0 ) { 34 throw new Test262Error('#3.1: -0 + 0 === 0. Actual: ' + (-0 + 0)); 35 } else { 36 if (1 / (-0 + 0) !== Number.POSITIVE_INFINITY) { 37 throw new Test262Error('#3.2: -0 + 0 === + 0. Actual: -0'); 38 } 39 } 40 41 //CHECK#4 42 if (0 + 0 !== 0 ) { 43 throw new Test262Error('#4.1: 0 + 0 === 0. Actual: ' + (0 + 0)); 44 } else { 45 if (1 / (0 + 0) !== Number.POSITIVE_INFINITY) { 46 throw new Test262Error('#4.2: 0 + 0 === + 0. Actual: -0'); 47 } 48 } 49 50 reportCompare(0, 0);