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| 1 // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Flags: --harmony-exponentiation-operator --harmony-proxies |
| 6 |
| 7 (function TestBasic() { |
| 8 assertEquals(-(8 ** 2), -64); |
| 9 assertEquals(+(8 ** 2), 64); |
| 10 assertEquals(~(8 ** 2), -65); |
| 11 assertEquals(!(8 ** 2), false); |
| 12 |
| 13 assertEquals(2 ** -2, 0.25); |
| 14 |
| 15 var o = { p: 1 }; |
| 16 assertEquals(2 ** delete o.p, 2); |
| 17 |
| 18 assertEquals(2 ** void 1, NaN); |
| 19 |
| 20 assertEquals(2 ** typeof 1, NaN); |
| 21 |
| 22 var s = "2"; |
| 23 var n = 2; |
| 24 |
| 25 assertEquals(2 ** "2", 4); |
| 26 assertEquals(2 ** +"2", 4); |
| 27 assertEquals(2 ** +s, 4); |
| 28 assertEquals(2 ** s, 4); |
| 29 assertEquals(2 ** 2, 4); |
| 30 assertEquals(2 ** +2, 4); |
| 31 assertEquals(2 ** +n, 4); |
| 32 assertEquals(2 ** n, 4); |
| 33 |
| 34 assertEquals(2 ** -"2", 0.25); |
| 35 assertEquals(2 ** -s, 0.25); |
| 36 assertEquals(2 ** -2, 0.25); |
| 37 assertEquals(2 ** -n, 0.25); |
| 38 |
| 39 assertEquals(2 ** ~"2", 0.125); |
| 40 assertEquals(2 ** ~s, 0.125); |
| 41 assertEquals(2 ** ~2, 0.125); |
| 42 assertEquals(2 ** ~n, 0.125); |
| 43 |
| 44 assertEquals(2 ** !"2", 1); |
| 45 assertEquals(2 ** !s, 1); |
| 46 assertEquals(2 ** !2, 1); |
| 47 assertEquals(2 ** !n, 1); |
| 48 |
| 49 var exponent = 2; |
| 50 assertEquals(2 ** 3, 8); |
| 51 assertEquals(3 * 2 ** 3, 24); |
| 52 assertEquals(2 ** ++exponent, 8); |
| 53 assertEquals(2 ** -1 * 2, 1); |
| 54 assertEquals(2 ** 2 * 4, 16); |
| 55 assertEquals(2 ** 2 / 2, 2); |
| 56 assertEquals(2 ** (3 ** 2), 512); |
| 57 assertEquals(2 ** 3 ** 2, 512); |
| 58 assertEquals(2 * 3 ** 2, 18); |
| 59 assertEquals(16 / 2 ** 2, 4); |
| 60 })(); |
| 61 |
| 62 |
| 63 (function TestAssignment() { |
| 64 var base = -5; |
| 65 assertEquals(base **= 3, -125); |
| 66 assertEquals(base, -125); |
| 67 })(); |
| 68 |
| 69 |
| 70 (function TestPrecedence() { |
| 71 var base = 4; |
| 72 assertEquals(--base ** 2, 9); // 3 ** 2 |
| 73 assertEquals(++base ** 2, 16); // 4 ** 2 |
| 74 assertEquals(base++ ** 2, 16); // 4 ** 2 |
| 75 assertEquals(base-- ** 2, 25); // 5 ** 2 |
| 76 |
| 77 assertEquals(4, base); |
| 78 assertEquals(--base ** --base ** 2, |
| 79 Math.pow(3, Math.pow(2, 2))); |
| 80 |
| 81 assertEquals(2, base); |
| 82 assertEquals(++base ** ++base ** 2, |
| 83 Math.pow(3, Math.pow(4, 2))); |
| 84 |
| 85 base = 4; |
| 86 assertEquals(base-- ** base-- ** 2, |
| 87 Math.pow(4, Math.pow(3, 2))); |
| 88 |
| 89 assertEquals(2, base); |
| 90 assertEquals(base++ ** base++ ** 2, |
| 91 Math.pow(2, Math.pow(3, 2))); |
| 92 })(); |
| 93 |
| 94 |
| 95 (function TestInvariants() { |
| 96 assertEquals(NaN, 2 ** NaN); |
| 97 assertEquals(NaN, (+0) ** NaN); |
| 98 assertEquals(NaN, (-0) ** NaN); |
| 99 assertEquals(NaN, Infinity ** NaN); |
| 100 assertEquals(NaN, (-Infinity) ** NaN); |
| 101 |
| 102 assertEquals(1, NaN ** +0); |
| 103 assertEquals(1, NaN ** -0); |
| 104 |
| 105 assertEquals(NaN, NaN ** NaN); |
| 106 assertEquals(NaN, NaN ** 2.2); |
| 107 assertEquals(NaN, NaN ** 1); |
| 108 assertEquals(NaN, NaN ** -1); |
| 109 assertEquals(NaN, NaN ** -2.2); |
| 110 assertEquals(NaN, NaN ** Infinity); |
| 111 assertEquals(NaN, NaN ** -Infinity); |
| 112 |
| 113 assertEquals(Infinity, 1.1 ** Infinity); |
| 114 assertEquals(Infinity, (-1.1) ** Infinity); |
| 115 assertEquals(Infinity, 2 ** Infinity); |
| 116 assertEquals(Infinity, (-2) ** Infinity); |
| 117 |
| 118 // Because +0 == -0, we need to compare 1/{+,-}0 to {+,-}Infinity |
| 119 assertEquals(+Infinity, 1/1.1 ** -Infinity); |
| 120 assertEquals(+Infinity, 1/(-1.1) ** -Infinity); |
| 121 assertEquals(+Infinity, 1/2 ** -Infinity); |
| 122 assertEquals(+Infinity, 1/(-2) ** -Infinity); |
| 123 |
| 124 assertEquals(NaN, 1 ** Infinity); |
| 125 assertEquals(NaN, 1 ** -Infinity); |
| 126 assertEquals(NaN, (-1) ** Infinity); |
| 127 assertEquals(NaN, (-1) ** -Infinity); |
| 128 |
| 129 assertEquals(+0, 0.1 ** Infinity); |
| 130 assertEquals(+0, (-0.1) ** Infinity); |
| 131 assertEquals(+0, 0.999 ** Infinity); |
| 132 assertEquals(+0, (-0.999) ** Infinity); |
| 133 |
| 134 assertEquals(Infinity, 0.1 ** -Infinity); |
| 135 assertEquals(Infinity, (-0.1) ** -Infinity); |
| 136 assertEquals(Infinity, 0.999 ** -Infinity); |
| 137 assertEquals(Infinity, (-0.999) ** -Infinity); |
| 138 |
| 139 assertEquals(Infinity, Infinity ** 0.1); |
| 140 assertEquals(Infinity, Infinity ** 2); |
| 141 |
| 142 assertEquals(+Infinity, 1/Infinity ** -0.1); |
| 143 assertEquals(+Infinity, 1/Infinity ** -2); |
| 144 |
| 145 assertEquals(-Infinity, (-Infinity) ** 3); |
| 146 assertEquals(-Infinity, (-Infinity) ** 13); |
| 147 |
| 148 assertEquals(Infinity, (-Infinity) ** 3.1); |
| 149 assertEquals(Infinity, (-Infinity) ** 2); |
| 150 |
| 151 assertEquals(-Infinity, 1/(-Infinity) ** -3); |
| 152 assertEquals(-Infinity, 1/(-Infinity) ** -13); |
| 153 |
| 154 assertEquals(+Infinity, 1/(-Infinity) ** -3.1); |
| 155 assertEquals(+Infinity, 1/(-Infinity) ** -2); |
| 156 |
| 157 assertEquals(+Infinity, 1/(+0) ** 1.1); |
| 158 assertEquals(+Infinity, 1/(+0) ** 2); |
| 159 |
| 160 assertEquals(Infinity, (+0) ** -1.1); |
| 161 assertEquals(Infinity, (+0) ** -2); |
| 162 |
| 163 assertEquals(-Infinity, 1/(-0) ** 3); |
| 164 assertEquals(-Infinity, 1/(-0) ** 13); |
| 165 |
| 166 assertEquals(+Infinity, 1/(-0) ** 3.1); |
| 167 assertEquals(+Infinity, 1/(-0) ** 2); |
| 168 |
| 169 assertEquals(-Infinity, (-0) ** -3); |
| 170 assertEquals(-Infinity, (-0) ** -13); |
| 171 |
| 172 assertEquals(Infinity, (-0) ** -3.1); |
| 173 assertEquals(Infinity, (-0) ** -2); |
| 174 |
| 175 assertEquals(NaN, (-0.00001) ** 1.1); |
| 176 assertEquals(NaN, (-0.00001) ** -1.1); |
| 177 assertEquals(NaN, (-1.1) ** 1.1); |
| 178 assertEquals(NaN, (-1.1) ** -1.1); |
| 179 assertEquals(NaN, (-2) ** 1.1); |
| 180 assertEquals(NaN, (-2) ** -1.1); |
| 181 assertEquals(NaN, (-1000) ** 1.1); |
| 182 assertEquals(NaN, (-1000) ** -1.1); |
| 183 |
| 184 assertEquals(+Infinity, 1/(-0) ** 0.5); |
| 185 assertEquals(+Infinity, 1/(-0) ** 0.6); |
| 186 assertEquals(-Infinity, 1/(-0) ** 1); |
| 187 assertEquals(-Infinity, 1/(-0) ** 10000000001); |
| 188 |
| 189 assertEquals(+Infinity, (-0) ** -0.5); |
| 190 assertEquals(+Infinity, (-0) ** -0.6); |
| 191 assertEquals(-Infinity, (-0) ** -1); |
| 192 assertEquals(-Infinity, (-0) ** -10000000001); |
| 193 |
| 194 assertEquals(4, 16 ** 0.5); |
| 195 assertEquals(NaN, (-16) ** 0.5); |
| 196 assertEquals(0.25, 16 ** -0.5); |
| 197 assertEquals(NaN, (-16) ** -0.5); |
| 198 })(); |
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