| // Copyright 2009 the Sputnik authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /** |
| * The result of a floating-point multiplication is governed by the rules of IEEE 754 double-precision arithmetics |
| * |
| * @path ch11/11.5/11.5.1/S11.5.1_A4_T2.js |
| * @description The sign of the result is positive if both operands have the same sign, negative if the operands have different signs |
| */ |
| |
| //CHECK#1 |
| if (1 * 1 !== 1) { |
| $ERROR('#1: 1 * 1 === 1. Actual: ' + (1 * 1)); |
| } |
| |
| //CHECK#2 |
| if (1 * -1 !== -1) { |
| $ERROR('#2: 1 * -1 === -1. Actual: ' + (1 * -1)); |
| } |
| |
| //CHECK#3 |
| if (-1 * 1 !== -1) { |
| $ERROR('#3: -1 * 1 === -1. Actual: ' + (-1 * 1)); |
| } |
| |
| //CHECK#4 |
| if (-1 * -1 !== 1) { |
| $ERROR('#4: -1 * -1 === 1. Actual: ' + (-1 * -1)); |
| } |
| |
| //CHECK#5 |
| if (0 * 0 !== 0) { |
| $ERROR('#5.1: 0 * 0 === 0. Actual: ' + (0 * 0)); |
| } else { |
| if (1 / (0 * 0) !== Number.POSITIVE_INFINITY) { |
| $ERROR('#5.2: 0 * 0 === + 0. Actual: -0'); |
| } |
| } |
| |
| //CHECK#6 |
| if (0 * -0 !== -0) { |
| $ERROR('#6.1: 0 * -0 === 0. Actual: ' + (0 * -0)); |
| } else { |
| if (1 / (0 * -0) !== Number.NEGATIVE_INFINITY) { |
| $ERROR('#6.2: 0 * -0 === - 0. Actual: +0'); |
| } |
| } |
| |
| //CHECK#7 |
| if (-0 * 0 !== -0) { |
| $ERROR('#7.1: -0 * 0 === 0. Actual: ' + (-0 * 0)); |
| } else { |
| if (1 / (-0 * 0) !== Number.NEGATIVE_INFINITY) { |
| $ERROR('#7.2: -0 * 0 === - 0. Actual: +0'); |
| } |
| } |
| |
| //CHECK#8 |
| if (-0 * -0 !== 0) { |
| $ERROR('#8.1: -0 * -0 === 0. Actual: ' + (-0 * -0)); |
| } else { |
| if (1 / (-0 * -0) !== Number.POSITIVE_INFINITY) { |
| $ERROR('#8.2: 0 * -0 === - 0. Actual: +0'); |
| } |
| } |
| |