| // Copyright 2009 the Sputnik authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| info: Operator x - y produces the same result as x + (-y) |
| es5id: 11.6.2_A4_T5 |
| description: > |
| Using the rule of sum of two zeroes and the fact that a - b = a + |
| (-b) |
| ---*/ |
| |
| //CHECK#1 |
| if (-0 - -0 !== 0 ) { |
| $ERROR('#1.1: -0 - -0 === 0. Actual: ' + (-0 - -0)); |
| } else { |
| if (1 / (-0 - -0) !== Number.POSITIVE_INFINITY) { |
| $ERROR('#1.2: -0 - -0 === + 0. Actual: -0'); |
| } |
| } |
| |
| //CHECK#2 |
| if (0 - -0 !== 0 ) { |
| $ERROR('#2.1: 0 - -0 === 0. Actual: ' + (0 - -0)); |
| } else { |
| if (1 / (0 - -0) !== Number.POSITIVE_INFINITY) { |
| $ERROR('#2.2: 0 - -0 === + 0. Actual: -0'); |
| } |
| } |
| |
| //CHECK#3 |
| if (-0 - 0 !== -0 ) { |
| $ERROR('#3.1: -0 - 0 === 0. Actual: ' + (-0 - 0)); |
| } else { |
| if (1 / (-0 - 0) !== Number.NEGATIVE_INFINITY) { |
| $ERROR('#3.2: -0 - 0 === - 0. Actual: +0'); |
| } |
| } |
| |
| //CHECK#4 |
| if (0 - 0 !== 0 ) { |
| $ERROR('#4.1: 0 - 0 === 0. Actual: ' + (0 - 0)); |
| } else { |
| if (1 / (0 - 0) !== Number.POSITIVE_INFINITY) { |
| $ERROR('#4.2: 0 - 0 === + 0. Actual: -0'); |
| } |
| } |
