The Tor Browser / file comparison
comparison: js/src/tests/ecma/Expressions/11.5.2.js
js/src/tests/ecma/Expressions/11.5.2.js
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 | |
| 7 /** | |
| 8 File Name: 11.5.2.js | |
| 9 ECMA Section: 11.5.2 Applying the / operator | |
| 10 Description: | |
| 11 | |
| 12 The / operator performs division, producing the quotient of its operands. | |
| 13 The left operand is the dividend and the right operand is the divisor. | |
| 14 ECMAScript does not perform integer division. The operands and result of all | |
| 15 division operations are double-precision floating-point numbers. | |
| 16 The result of division is determined by the specification of IEEE 754 arithmetic: | |
| 17 | |
| 18 If either operand is NaN, the result is NaN. | |
| 19 The sign of the result is positive if both operands have the same sign, negative if the operands have different | |
| 20 signs. | |
| 21 Division of an infinity by an infinity results in NaN. | |
| 22 Division of an infinity by a zero results in an infinity. The sign is determined by the rule already stated above. | |
| 23 Division of an infinity by a non-zero finite value results in a signed infinity. The sign is determined by the rule | |
| 24 already stated above. | |
| 25 Division of a finite value by an infinity results in zero. The sign is determined by the rule already stated above. | |
| 26 Division of a zero by a zero results in NaN; division of zero by any other finite value results in zero, with the sign | |
| 27 determined by the rule already stated above. | |
| 28 Division of a non-zero finite value by a zero results in a signed infinity. The sign is determined by the rule | |
| 29 already stated above. | |
| 30 In the remaining cases, where neither an infinity, nor a zero, nor NaN is involved, the quotient is computed and | |
| 31 rounded to the nearest representable value using IEEE 754 round-to-nearest mode. If the magnitude is too | |
| 32 large to represent, we say the operation overflows; the result is then an infinity of appropriate sign. If the | |
| 33 magnitude is too small to represent, we say the operation underflows and the result is a zero of the appropriate | |
| 34 sign. The ECMAScript language requires support of gradual underflow as defined by IEEE 754. | |
| 35 | |
| 36 Author: christine@netscape.com | |
| 37 Date: 12 november 1997 | |
| 38 */ | |
| 39 var SECTION = "11.5.2"; | |
| 40 var VERSION = "ECMA_1"; | |
| 41 var BUGNUMBER="111202"; | |
| 42 startTest(); | |
| 43 | |
| 44 writeHeaderToLog( SECTION + " Applying the / operator"); | |
| 45 | |
| 46 // if either operand is NaN, the result is NaN. | |
| 47 | |
| 48 new TestCase( SECTION, "Number.NaN / Number.NaN", Number.NaN, Number.NaN / Number.NaN ); | |
| 49 new TestCase( SECTION, "Number.NaN / 1", Number.NaN, Number.NaN / 1 ); | |
| 50 new TestCase( SECTION, "1 / Number.NaN", Number.NaN, 1 / Number.NaN ); | |
| 51 | |
| 52 new TestCase( SECTION, "Number.POSITIVE_INFINITY / Number.NaN", Number.NaN, Number.POSITIVE_INFINITY / Number.NaN ); | |
| 53 new TestCase( SECTION, "Number.NEGATIVE_INFINITY / Number.NaN", Number.NaN, Number.NEGATIVE_INFINITY / Number.NaN ); | |
| 54 | |
| 55 // Division of an infinity by an infinity results in NaN. | |
| 56 | |
| 57 new TestCase( SECTION, "Number.NEGATIVE_INFINITY / Number.NEGATIVE_INFINITY", Number.NaN, Number.NEGATIVE_INFINITY / Number.NEGATIVE_INFINITY ); | |
| 58 new TestCase( SECTION, "Number.POSITIVE_INFINITY / Number.NEGATIVE_INFINITY", Number.NaN, Number.POSITIVE_INFINITY / Number.NEGATIVE_INFINITY ); | |
| 59 new TestCase( SECTION, "Number.NEGATIVE_INFINITY / Number.POSITIVE_INFINITY", Number.NaN, Number.NEGATIVE_INFINITY / Number.POSITIVE_INFINITY ); | |
| 60 new TestCase( SECTION, "Number.POSITIVE_INFINITY / Number.POSITIVE_INFINITY", Number.NaN, Number.POSITIVE_INFINITY / Number.POSITIVE_INFINITY ); | |
| 61 | |
| 62 // Division of an infinity by a zero results in an infinity. | |
| 63 | |
| 64 new TestCase( SECTION, "Number.POSITIVE_INFINITY / 0", Number.POSITIVE_INFINITY, Number.POSITIVE_INFINITY / 0 ); | |
| 65 new TestCase( SECTION, "Number.NEGATIVE_INFINITY / 0", Number.NEGATIVE_INFINITY, Number.NEGATIVE_INFINITY / 0 ); | |
| 66 new TestCase( SECTION, "Number.POSITIVE_INFINITY / -0", Number.NEGATIVE_INFINITY, Number.POSITIVE_INFINITY / -0 ); | |
| 67 new TestCase( SECTION, "Number.NEGATIVE_INFINITY / -0", Number.POSITIVE_INFINITY, Number.NEGATIVE_INFINITY / -0 ); | |
| 68 | |
| 69 // Division of an infinity by a non-zero finite value results in a signed infinity. | |
| 70 | |
| 71 new TestCase( SECTION, "Number.NEGATIVE_INFINITY / 1 ", Number.NEGATIVE_INFINITY, Number.NEGATIVE_INFINITY / 1 ); | |
| 72 new TestCase( SECTION, "Number.NEGATIVE_INFINITY / -1 ", Number.POSITIVE_INFINITY, Number.NEGATIVE_INFINITY / -1 ); | |
| 73 new TestCase( SECTION, "Number.POSITIVE_INFINITY / 1 ", Number.POSITIVE_INFINITY, Number.POSITIVE_INFINITY / 1 ); | |
| 74 new TestCase( SECTION, "Number.POSITIVE_INFINITY / -1 ", Number.NEGATIVE_INFINITY, Number.POSITIVE_INFINITY / -1 ); | |
| 75 | |
| 76 new TestCase( SECTION, "Number.NEGATIVE_INFINITY / Number.MAX_VALUE ", Number.NEGATIVE_INFINITY, Number.NEGATIVE_INFINITY / Number.MAX_VALUE ); | |
| 77 new TestCase( SECTION, "Number.NEGATIVE_INFINITY / -Number.MAX_VALUE ", Number.POSITIVE_INFINITY, Number.NEGATIVE_INFINITY / -Number.MAX_VALUE ); | |
| 78 new TestCase( SECTION, "Number.POSITIVE_INFINITY / Number.MAX_VALUE ", Number.POSITIVE_INFINITY, Number.POSITIVE_INFINITY / Number.MAX_VALUE ); | |
| 79 new TestCase( SECTION, "Number.POSITIVE_INFINITY / -Number.MAX_VALUE ", Number.NEGATIVE_INFINITY, Number.POSITIVE_INFINITY / -Number.MAX_VALUE ); | |
| 80 | |
| 81 // Division of a finite value by an infinity results in zero. | |
| 82 | |
| 83 new TestCase( SECTION, "1 / Number.NEGATIVE_INFINITY", -0, 1 / Number.NEGATIVE_INFINITY ); | |
| 84 new TestCase( SECTION, "1 / Number.POSITIVE_INFINITY", 0, 1 / Number.POSITIVE_INFINITY ); | |
| 85 new TestCase( SECTION, "-1 / Number.POSITIVE_INFINITY", -0, -1 / Number.POSITIVE_INFINITY ); | |
| 86 new TestCase( SECTION, "-1 / Number.NEGATIVE_INFINITY", 0, -1 / Number.NEGATIVE_INFINITY ); | |
| 87 | |
| 88 new TestCase( SECTION, "Number.MAX_VALUE / Number.NEGATIVE_INFINITY", -0, Number.MAX_VALUE / Number.NEGATIVE_INFINITY ); | |
| 89 new TestCase( SECTION, "Number.MAX_VALUE / Number.POSITIVE_INFINITY", 0, Number.MAX_VALUE / Number.POSITIVE_INFINITY ); | |
| 90 new TestCase( SECTION, "-Number.MAX_VALUE / Number.POSITIVE_INFINITY", -0, -Number.MAX_VALUE / Number.POSITIVE_INFINITY ); | |
| 91 new TestCase( SECTION, "-Number.MAX_VALUE / Number.NEGATIVE_INFINITY", 0, -Number.MAX_VALUE / Number.NEGATIVE_INFINITY ); | |
| 92 | |
| 93 // Division of a zero by a zero results in NaN | |
| 94 | |
| 95 new TestCase( SECTION, "0 / -0", Number.NaN, 0 / -0 ); | |
| 96 new TestCase( SECTION, "-0 / 0", Number.NaN, -0 / 0 ); | |
| 97 new TestCase( SECTION, "-0 / -0", Number.NaN, -0 / -0 ); | |
| 98 new TestCase( SECTION, "0 / 0", Number.NaN, 0 / 0 ); | |
| 99 | |
| 100 // division of zero by any other finite value results in zero | |
| 101 | |
| 102 new TestCase( SECTION, "0 / 1", 0, 0 / 1 ); | |
| 103 new TestCase( SECTION, "0 / -1", -0, 0 / -1 ); | |
| 104 new TestCase( SECTION, "-0 / 1", -0, -0 / 1 ); | |
| 105 new TestCase( SECTION, "-0 / -1", 0, -0 / -1 ); | |
| 106 | |
| 107 // Division of a non-zero finite value by a zero results in a signed infinity. | |
| 108 | |
| 109 new TestCase( SECTION, "1 / 0", Number.POSITIVE_INFINITY, 1/0 ); | |
| 110 new TestCase( SECTION, "1 / -0", Number.NEGATIVE_INFINITY, 1/-0 ); | |
| 111 new TestCase( SECTION, "-1 / 0", Number.NEGATIVE_INFINITY, -1/0 ); | |
| 112 new TestCase( SECTION, "-1 / -0", Number.POSITIVE_INFINITY, -1/-0 ); | |
| 113 | |
| 114 new TestCase( SECTION, "0 / Number.POSITIVE_INFINITY", 0, 0 / Number.POSITIVE_INFINITY ); | |
| 115 new TestCase( SECTION, "0 / Number.NEGATIVE_INFINITY", -0, 0 / Number.NEGATIVE_INFINITY ); | |
| 116 new TestCase( SECTION, "-0 / Number.POSITIVE_INFINITY", -0, -0 / Number.POSITIVE_INFINITY ); | |
| 117 new TestCase( SECTION, "-0 / Number.NEGATIVE_INFINITY", 0, -0 / Number.NEGATIVE_INFINITY ); | |
| 118 | |
| 119 test(); | |
| 120 |
