1 // Copyright 2010 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 // Flags: --always-inline-smi-code 29 30 const SMI_MAX = (1 << 30) - 1; 31 const SMI_MIN = -(1 << 30); 32 const ONE = 1; 33 const ONE_HUNDRED = 100; 34 35 const OBJ_42 = new (function() { 36 this.valueOf = function() { return 42; }; 37 })(); 38 39 assertEquals(42, OBJ_42.valueOf()); 40 41 42 function Add1(x) { 43 return x + 1; 44 } 45 46 function Add100(x) { 47 return x + 100; 48 } 49 50 function Add1Reversed(x) { 51 return 1 + x; 52 } 53 54 function Add100Reversed(x) { 55 return 100 + x; 56 } 57 58 59 assertEquals(1, Add1(0)); // fast case 60 assertEquals(1, Add1Reversed(0)); // fast case 61 assertEquals(SMI_MAX + ONE, Add1(SMI_MAX), "smimax + 1"); 62 assertEquals(SMI_MAX + ONE, Add1Reversed(SMI_MAX), "1 + smimax"); 63 assertEquals(42 + ONE, Add1(OBJ_42)); // non-smi 64 assertEquals(42 + ONE, Add1Reversed(OBJ_42)); // non-smi 65 66 assertEquals(100, Add100(0)); // fast case 67 assertEquals(100, Add100Reversed(0)); // fast case 68 assertEquals(SMI_MAX + ONE_HUNDRED, Add100(SMI_MAX), "smimax + 100"); 69 assertEquals(SMI_MAX + ONE_HUNDRED, Add100Reversed(SMI_MAX), " 100 + smimax"); 70 assertEquals(42 + ONE_HUNDRED, Add100(OBJ_42)); // non-smi 71 assertEquals(42 + ONE_HUNDRED, Add100Reversed(OBJ_42)); // non-smi 72 73 74 75 function Sub1(x) { 76 return x - 1; 77 } 78 79 function Sub100(x) { 80 return x - 100; 81 } 82 83 function Sub1Reversed(x) { 84 return 1 - x; 85 } 86 87 function Sub100Reversed(x) { 88 return 100 - x; 89 } 90 91 92 assertEquals(0, Sub1(1)); // fast case 93 assertEquals(-1, Sub1Reversed(2)); // fast case 94 assertEquals(SMI_MIN - ONE, Sub1(SMI_MIN)); // overflow 95 assertEquals(ONE - SMI_MIN, Sub1Reversed(SMI_MIN)); // overflow 96 assertEquals(42 - ONE, Sub1(OBJ_42)); // non-smi 97 assertEquals(ONE - 42, Sub1Reversed(OBJ_42)); // non-smi 98 99 assertEquals(0, Sub100(100)); // fast case 100 assertEquals(1, Sub100Reversed(99)); // fast case 101 assertEquals(SMI_MIN - ONE_HUNDRED, Sub100(SMI_MIN)); // overflow 102 assertEquals(ONE_HUNDRED - SMI_MIN, Sub100Reversed(SMI_MIN)); // overflow 103 assertEquals(42 - ONE_HUNDRED, Sub100(OBJ_42)); // non-smi 104 assertEquals(ONE_HUNDRED - 42, Sub100Reversed(OBJ_42)); // non-smi 105 106 107 function Shr1(x) { 108 return x >>> 1; 109 } 110 111 function Shr100(x) { 112 return x >>> 100; 113 } 114 115 function Shr1Reversed(x) { 116 return 1 >>> x; 117 } 118 119 function Shr100Reversed(x) { 120 return 100 >>> x; 121 } 122 123 function Sar1(x) { 124 return x >> 1; 125 } 126 127 function Sar100(x) { 128 return x >> 100; 129 } 130 131 function Sar1Reversed(x) { 132 return 1 >> x; 133 } 134 135 function Sar100Reversed(x) { 136 return 100 >> x; 137 } 138 139 140 assertEquals(0, Shr1(1)); 141 assertEquals(0, Sar1(1)); 142 assertEquals(0, Shr1Reversed(2)); 143 assertEquals(0, Sar1Reversed(2)); 144 assertEquals(1610612736, Shr1(SMI_MIN)); 145 assertEquals(-536870912, Sar1(SMI_MIN)); 146 assertEquals(1, Shr1Reversed(SMI_MIN)); 147 assertEquals(1, Sar1Reversed(SMI_MIN)); 148 assertEquals(21, Shr1(OBJ_42)); 149 assertEquals(21, Sar1(OBJ_42)); 150 assertEquals(0, Shr1Reversed(OBJ_42)); 151 assertEquals(0, Sar1Reversed(OBJ_42)); 152 153 assertEquals(6, Shr100(100), "100 >>> 100"); 154 assertEquals(6, Sar100(100), "100 >> 100"); 155 assertEquals(12, Shr100Reversed(99)); 156 assertEquals(12, Sar100Reversed(99)); 157 assertEquals(201326592, Shr100(SMI_MIN)); 158 assertEquals(-67108864, Sar100(SMI_MIN)); 159 assertEquals(100, Shr100Reversed(SMI_MIN)); 160 assertEquals(100, Sar100Reversed(SMI_MIN)); 161 assertEquals(2, Shr100(OBJ_42)); 162 assertEquals(2, Sar100(OBJ_42)); 163 assertEquals(0, Shr100Reversed(OBJ_42)); 164 assertEquals(0, Sar100Reversed(OBJ_42)); 165 166 167 function Xor1(x) { 168 return x ^ 1; 169 } 170 171 function Xor100(x) { 172 return x ^ 100; 173 } 174 175 function Xor1Reversed(x) { 176 return 1 ^ x; 177 } 178 179 function Xor100Reversed(x) { 180 return 100 ^ x; 181 } 182 183 184 assertEquals(0, Xor1(1)); 185 assertEquals(3, Xor1Reversed(2)); 186 assertEquals(SMI_MIN + 1, Xor1(SMI_MIN)); 187 assertEquals(SMI_MIN + 1, Xor1Reversed(SMI_MIN)); 188 assertEquals(43, Xor1(OBJ_42)); 189 assertEquals(43, Xor1Reversed(OBJ_42)); 190 191 assertEquals(0, Xor100(100)); 192 assertEquals(7, Xor100Reversed(99)); 193 assertEquals(-1073741724, Xor100(SMI_MIN)); 194 assertEquals(-1073741724, Xor100Reversed(SMI_MIN)); 195 assertEquals(78, Xor100(OBJ_42)); 196 assertEquals(78, Xor100Reversed(OBJ_42)); 197 198 var x = 0x23; var y = 0x35; 199 assertEquals(0x16, x ^ y); 200 201 202 // Bitwise not. 203 var v = 0; 204 assertEquals(-1, ~v); 205 v = SMI_MIN; 206 assertEquals(0x3fffffff, ~v, "~smimin"); 207 v = SMI_MAX; 208 assertEquals(-0x40000000, ~v, "~smimax"); 209 210 // Overflowing ++ and --. 211 v = SMI_MAX; 212 v++; 213 assertEquals(0x40000000, v, "smimax++"); 214 v = SMI_MIN; 215 v--; 216 assertEquals(-0x40000001, v, "smimin--"); 217 218 // Not actually Smi operations. 219 // Check that relations on unary ops work. 220 var v = -1.2; 221 assertTrue(v == v); 222 assertTrue(v === v); 223 assertTrue(v <= v); 224 assertTrue(v >= v); 225 assertFalse(v < v); 226 assertFalse(v > v); 227 assertFalse(v != v); 228 assertFalse(v !== v); 229 230 // Right hand side of unary minus is overwritable. 231 v = 1.5 232 assertEquals(-2.25, -(v * v)); 233 234 // Smi input to bitop gives non-smi result where the rhs is a float that 235 // can be overwritten. 236 var x1 = 0x10000000; 237 var x2 = 0x40000002; 238 var x3 = 0x40000000; 239 assertEquals(0x40000000, x1 << (x2 - x3), "0x10000000<<1(1)"); 240 241 // Smi input to bitop gives non-smi result where the rhs could be overwritten 242 // if it were a float, but it isn't. 243 x1 = 0x10000000 244 x2 = 4 245 x3 = 2 246 assertEquals(0x40000000, x1 << (x2 - x3), "0x10000000<<2(2)"); 247 248 249 // Test shift operators on non-smi inputs, giving smi and non-smi results. 250 function testShiftNonSmis() { 251 var pos_non_smi = 2000000000; 252 var neg_non_smi = -pos_non_smi; 253 var pos_smi = 1000000000; 254 var neg_smi = -pos_smi; 255 256 // Begin block A 257 assertEquals(pos_non_smi, (pos_non_smi) >> 0); 258 assertEquals(pos_non_smi, (pos_non_smi) >>> 0); 259 assertEquals(pos_non_smi, (pos_non_smi) << 0); 260 assertEquals(neg_non_smi, (neg_non_smi) >> 0); 261 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi) >>> 0); 262 assertEquals(neg_non_smi, (neg_non_smi) << 0); 263 assertEquals(pos_smi, (pos_smi) >> 0, "possmi >> 0"); 264 assertEquals(pos_smi, (pos_smi) >>> 0, "possmi >>>0"); 265 assertEquals(pos_smi, (pos_smi) << 0, "possmi << 0"); 266 assertEquals(neg_smi, (neg_smi) >> 0, "negsmi >> 0"); 267 assertEquals(neg_smi + 0x100000000, (neg_smi) >>> 0, "negsmi >>> 0"); 268 assertEquals(neg_smi, (neg_smi) << 0), "negsmi << 0"; 269 270 assertEquals(pos_non_smi / 2, (pos_non_smi) >> 1); 271 assertEquals(pos_non_smi / 2, (pos_non_smi) >>> 1); 272 assertEquals(-0x1194D800, (pos_non_smi) << 1); 273 assertEquals(pos_non_smi / 8, (pos_non_smi) >> 3); 274 assertEquals(pos_non_smi / 8, (pos_non_smi) >>> 3); 275 assertEquals(-0x46536000, (pos_non_smi) << 3); 276 assertEquals(0x73594000, (pos_non_smi) << 4); 277 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >> 0); 278 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >>> 0); 279 assertEquals(pos_non_smi, (pos_non_smi + 0.5) << 0); 280 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >> 1); 281 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >>> 1); 282 assertEquals(-0x1194D800, (pos_non_smi + 0.5) << 1); 283 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >> 3); 284 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >>> 3); 285 assertEquals(-0x46536000, (pos_non_smi + 0.5) << 3); 286 assertEquals(0x73594000, (pos_non_smi + 0.5) << 4); 287 288 assertEquals(neg_non_smi / 2, (neg_non_smi) >> 1, "negnonsmi >> 1"); 289 290 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi) >>> 1, 291 "negnonsmi >>> 1"); 292 assertEquals(0x1194D800, (neg_non_smi) << 1); 293 assertEquals(neg_non_smi / 8, (neg_non_smi) >> 3); 294 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi) >>> 3); 295 assertEquals(0x46536000, (neg_non_smi) << 3); 296 assertEquals(-0x73594000, (neg_non_smi) << 4); 297 assertEquals(neg_non_smi, (neg_non_smi - 0.5) >> 0); 298 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi - 0.5) >>> 0, 299 "negnonsmi.5 >>> 0"); 300 assertEquals(neg_non_smi, (neg_non_smi - 0.5) << 0); 301 assertEquals(neg_non_smi / 2, (neg_non_smi - 0.5) >> 1); 302 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi - 0.5) >>> 1, 303 "negnonsmi.5 >>> 1"); 304 assertEquals(0x1194D800, (neg_non_smi - 0.5) << 1); 305 assertEquals(neg_non_smi / 8, (neg_non_smi - 0.5) >> 3); 306 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi - 0.5) >>> 3); 307 assertEquals(0x46536000, (neg_non_smi - 0.5) << 3); 308 assertEquals(-0x73594000, (neg_non_smi - 0.5) << 4); 309 310 assertEquals(pos_smi / 2, (pos_smi) >> 1); 311 assertEquals(pos_smi / 2, (pos_smi) >>> 1); 312 assertEquals(pos_non_smi, (pos_smi) << 1); 313 assertEquals(pos_smi / 8, (pos_smi) >> 3); 314 assertEquals(pos_smi / 8, (pos_smi) >>> 3); 315 assertEquals(-0x2329b000, (pos_smi) << 3); 316 assertEquals(0x73594000, (pos_smi) << 5); 317 assertEquals(pos_smi, (pos_smi + 0.5) >> 0, "possmi.5 >> 0"); 318 assertEquals(pos_smi, (pos_smi + 0.5) >>> 0, "possmi.5 >>> 0"); 319 assertEquals(pos_smi, (pos_smi + 0.5) << 0, "possmi.5 << 0"); 320 assertEquals(pos_smi / 2, (pos_smi + 0.5) >> 1); 321 assertEquals(pos_smi / 2, (pos_smi + 0.5) >>> 1); 322 assertEquals(pos_non_smi, (pos_smi + 0.5) << 1); 323 assertEquals(pos_smi / 8, (pos_smi + 0.5) >> 3); 324 assertEquals(pos_smi / 8, (pos_smi + 0.5) >>> 3); 325 assertEquals(-0x2329b000, (pos_smi + 0.5) << 3); 326 assertEquals(0x73594000, (pos_smi + 0.5) << 5); 327 328 assertEquals(neg_smi / 2, (neg_smi) >> 1); 329 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi) >>> 1); 330 assertEquals(neg_non_smi, (neg_smi) << 1); 331 assertEquals(neg_smi / 8, (neg_smi) >> 3); 332 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi) >>> 3); 333 assertEquals(0x46536000, (neg_smi) << 4); 334 assertEquals(-0x73594000, (neg_smi) << 5); 335 assertEquals(neg_smi, (neg_smi - 0.5) >> 0, "negsmi.5 >> 0"); 336 assertEquals(neg_smi + 0x100000000, (neg_smi - 0.5) >>> 0, "negsmi.5 >>> 0"); 337 assertEquals(neg_smi, (neg_smi - 0.5) << 0, "negsmi.5 << 0"); 338 assertEquals(neg_smi / 2, (neg_smi - 0.5) >> 1); 339 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi - 0.5) >>> 1); 340 assertEquals(neg_non_smi, (neg_smi - 0.5) << 1); 341 assertEquals(neg_smi / 8, (neg_smi - 0.5) >> 3); 342 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi - 0.5) >>> 3); 343 assertEquals(0x46536000, (neg_smi - 0.5) << 4); 344 assertEquals(-0x73594000, (neg_smi - 0.5) << 5); 345 // End block A 346 347 // Repeat block A with 2^32 added to positive numbers and 348 // 2^32 subtracted from negative numbers. 349 // Begin block A repeat 1 350 var two_32 = 0x100000000; 351 var neg_32 = -two_32; 352 assertEquals(pos_non_smi, (two_32 + pos_non_smi) >> 0); 353 assertEquals(pos_non_smi, (two_32 + pos_non_smi) >>> 0); 354 assertEquals(pos_non_smi, (two_32 + pos_non_smi) << 0); 355 assertEquals(neg_non_smi, (neg_32 + neg_non_smi) >> 0); 356 assertEquals(neg_non_smi + 0x100000000, (neg_32 + neg_non_smi) >>> 0); 357 assertEquals(neg_non_smi, (neg_32 + neg_non_smi) << 0); 358 assertEquals(pos_smi, (two_32 + pos_smi) >> 0, "2^32+possmi >> 0"); 359 assertEquals(pos_smi, (two_32 + pos_smi) >>> 0, "2^32+possmi >>> 0"); 360 assertEquals(pos_smi, (two_32 + pos_smi) << 0, "2^32+possmi << 0"); 361 assertEquals(neg_smi, (neg_32 + neg_smi) >> 0, "2^32+negsmi >> 0"); 362 assertEquals(neg_smi + 0x100000000, (neg_32 + neg_smi) >>> 0); 363 assertEquals(neg_smi, (neg_32 + neg_smi) << 0, "2^32+negsmi << 0"); 364 365 assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi) >> 1); 366 assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi) >>> 1); 367 assertEquals(-0x1194D800, (two_32 + pos_non_smi) << 1); 368 assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi) >> 3); 369 assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi) >>> 3); 370 assertEquals(-0x46536000, (two_32 + pos_non_smi) << 3); 371 assertEquals(0x73594000, (two_32 + pos_non_smi) << 4); 372 assertEquals(pos_non_smi, (two_32 + pos_non_smi + 0.5) >> 0); 373 assertEquals(pos_non_smi, (two_32 + pos_non_smi + 0.5) >>> 0); 374 assertEquals(pos_non_smi, (two_32 + pos_non_smi + 0.5) << 0); 375 assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi + 0.5) >> 1); 376 assertEquals(pos_non_smi / 2, (two_32 + pos_non_smi + 0.5) >>> 1); 377 assertEquals(-0x1194D800, (two_32 + pos_non_smi + 0.5) << 1); 378 assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi + 0.5) >> 3); 379 assertEquals(pos_non_smi / 8, (two_32 + pos_non_smi + 0.5) >>> 3); 380 assertEquals(-0x46536000, (two_32 + pos_non_smi + 0.5) << 3); 381 assertEquals(0x73594000, (two_32 + pos_non_smi + 0.5) << 4); 382 383 assertEquals(neg_non_smi / 2, (neg_32 + neg_non_smi) >> 1); 384 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_32 + neg_non_smi) >>> 1); 385 assertEquals(0x1194D800, (neg_32 + neg_non_smi) << 1); 386 assertEquals(neg_non_smi / 8, (neg_32 + neg_non_smi) >> 3); 387 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_32 + neg_non_smi) >>> 3); 388 assertEquals(0x46536000, (neg_32 + neg_non_smi) << 3); 389 assertEquals(-0x73594000, (neg_32 + neg_non_smi) << 4); 390 assertEquals(neg_non_smi, (neg_32 + neg_non_smi - 0.5) >> 0); 391 assertEquals(neg_non_smi + 0x100000000, (neg_32 + neg_non_smi - 0.5) >>> 0); 392 assertEquals(neg_non_smi, (neg_32 + neg_non_smi - 0.5) << 0); 393 assertEquals(neg_non_smi / 2, (neg_32 + neg_non_smi - 0.5) >> 1); 394 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_32 + neg_non_smi - 0.5) 395 >>> 1); 396 assertEquals(0x1194D800, (neg_32 + neg_non_smi - 0.5) << 1); 397 assertEquals(neg_non_smi / 8, (neg_32 + neg_non_smi - 0.5) >> 3); 398 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_32 + neg_non_smi - 0.5) 399 >>> 3); 400 assertEquals(0x46536000, (neg_32 + neg_non_smi - 0.5) << 3); 401 assertEquals(-0x73594000, (neg_32 + neg_non_smi - 0.5) << 4); 402 403 assertEquals(pos_smi / 2, (two_32 + pos_smi) >> 1); 404 assertEquals(pos_smi / 2, (two_32 + pos_smi) >>> 1); 405 assertEquals(pos_non_smi, (two_32 + pos_smi) << 1); 406 assertEquals(pos_smi / 8, (two_32 + pos_smi) >> 3); 407 assertEquals(pos_smi / 8, (two_32 + pos_smi) >>> 3); 408 assertEquals(-0x2329b000, (two_32 + pos_smi) << 3); 409 assertEquals(0x73594000, (two_32 + pos_smi) << 5); 410 assertEquals(pos_smi, (two_32 + pos_smi + 0.5) >> 0); 411 assertEquals(pos_smi, (two_32 + pos_smi + 0.5) >>> 0); 412 assertEquals(pos_smi, (two_32 + pos_smi + 0.5) << 0); 413 assertEquals(pos_smi / 2, (two_32 + pos_smi + 0.5) >> 1); 414 assertEquals(pos_smi / 2, (two_32 + pos_smi + 0.5) >>> 1); 415 assertEquals(pos_non_smi, (two_32 + pos_smi + 0.5) << 1); 416 assertEquals(pos_smi / 8, (two_32 + pos_smi + 0.5) >> 3); 417 assertEquals(pos_smi / 8, (two_32 + pos_smi + 0.5) >>> 3); 418 assertEquals(-0x2329b000, (two_32 + pos_smi + 0.5) << 3); 419 assertEquals(0x73594000, (two_32 + pos_smi + 0.5) << 5); 420 421 assertEquals(neg_smi / 2, (neg_32 + neg_smi) >> 1); 422 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_32 + neg_smi) >>> 1); 423 assertEquals(neg_non_smi, (neg_32 + neg_smi) << 1); 424 assertEquals(neg_smi / 8, (neg_32 + neg_smi) >> 3); 425 assertEquals((neg_smi + 0x100000000) / 8, (neg_32 + neg_smi) >>> 3); 426 assertEquals(0x46536000, (neg_32 + neg_smi) << 4); 427 assertEquals(-0x73594000, (neg_32 + neg_smi) << 5); 428 assertEquals(neg_smi, (neg_32 + neg_smi - 0.5) >> 0, "-2^32+negsmi.5 >> 0"); 429 assertEquals(neg_smi + 0x100000000, (neg_32 + neg_smi - 0.5) >>> 0); 430 assertEquals(neg_smi, (neg_32 + neg_smi - 0.5) << 0, "-2^32+negsmi.5 << 0"); 431 assertEquals(neg_smi / 2, (neg_32 + neg_smi - 0.5) >> 1); 432 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_32 + neg_smi - 0.5) >>> 1); 433 assertEquals(neg_non_smi, (neg_32 + neg_smi - 0.5) << 1); 434 assertEquals(neg_smi / 8, (neg_32 + neg_smi - 0.5) >> 3); 435 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_32 + neg_smi - 0.5) >>> 3); 436 assertEquals(0x46536000, (neg_32 + neg_smi - 0.5) << 4); 437 assertEquals(-0x73594000, (neg_32 + neg_smi - 0.5) << 5); 438 // End block A repeat 1 439 // Repeat block A with shift amounts in variables intialized with 440 // a constant. 441 var zero = 0; 442 var one = 1; 443 var three = 3; 444 var four = 4; 445 var five = 5; 446 // Begin block A repeat 2 447 assertEquals(pos_non_smi, (pos_non_smi) >> zero); 448 assertEquals(pos_non_smi, (pos_non_smi) >>> zero); 449 assertEquals(pos_non_smi, (pos_non_smi) << zero); 450 assertEquals(neg_non_smi, (neg_non_smi) >> zero); 451 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi) >>> zero); 452 assertEquals(neg_non_smi, (neg_non_smi) << zero); 453 assertEquals(pos_smi, (pos_smi) >> zero); 454 assertEquals(pos_smi, (pos_smi) >>> zero); 455 assertEquals(pos_smi, (pos_smi) << zero); 456 assertEquals(neg_smi, (neg_smi) >> zero, "negsmi >> zero"); 457 assertEquals(neg_smi + 0x100000000, (neg_smi) >>> zero); 458 assertEquals(neg_smi, (neg_smi) << zero, "negsmi << zero"); 459 460 assertEquals(pos_non_smi / 2, (pos_non_smi) >> one); 461 assertEquals(pos_non_smi / 2, (pos_non_smi) >>> one); 462 assertEquals(-0x1194D800, (pos_non_smi) << one); 463 assertEquals(pos_non_smi / 8, (pos_non_smi) >> three); 464 assertEquals(pos_non_smi / 8, (pos_non_smi) >>> three); 465 assertEquals(-0x46536000, (pos_non_smi) << three); 466 assertEquals(0x73594000, (pos_non_smi) << four); 467 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >> zero); 468 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >>> zero); 469 assertEquals(pos_non_smi, (pos_non_smi + 0.5) << zero); 470 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >> one); 471 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >>> one); 472 assertEquals(-0x1194D800, (pos_non_smi + 0.5) << one); 473 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >> three); 474 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >>> three); 475 assertEquals(-0x46536000, (pos_non_smi + 0.5) << three); 476 assertEquals(0x73594000, (pos_non_smi + 0.5) << four); 477 478 assertEquals(neg_non_smi / 2, (neg_non_smi) >> one); 479 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi) >>> one); 480 assertEquals(0x1194D800, (neg_non_smi) << one); 481 assertEquals(neg_non_smi / 8, (neg_non_smi) >> three); 482 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi) >>> three); 483 assertEquals(0x46536000, (neg_non_smi) << three); 484 assertEquals(-0x73594000, (neg_non_smi) << four); 485 assertEquals(neg_non_smi, (neg_non_smi - 0.5) >> zero); 486 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi - 0.5) >>> zero); 487 assertEquals(neg_non_smi, (neg_non_smi - 0.5) << zero); 488 assertEquals(neg_non_smi / 2, (neg_non_smi - 0.5) >> one); 489 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi - 0.5) >>> one); 490 assertEquals(0x1194D800, (neg_non_smi - 0.5) << one); 491 assertEquals(neg_non_smi / 8, (neg_non_smi - 0.5) >> three); 492 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi - 0.5) 493 >>> three); 494 assertEquals(0x46536000, (neg_non_smi - 0.5) << three); 495 assertEquals(-0x73594000, (neg_non_smi - 0.5) << four); 496 497 assertEquals(pos_smi / 2, (pos_smi) >> one); 498 assertEquals(pos_smi / 2, (pos_smi) >>> one); 499 assertEquals(pos_non_smi, (pos_smi) << one); 500 assertEquals(pos_smi / 8, (pos_smi) >> three); 501 assertEquals(pos_smi / 8, (pos_smi) >>> three); 502 assertEquals(-0x2329b000, (pos_smi) << three); 503 assertEquals(0x73594000, (pos_smi) << five); 504 assertEquals(pos_smi, (pos_smi + 0.5) >> zero); 505 assertEquals(pos_smi, (pos_smi + 0.5) >>> zero); 506 assertEquals(pos_smi, (pos_smi + 0.5) << zero); 507 assertEquals(pos_smi / 2, (pos_smi + 0.5) >> one); 508 assertEquals(pos_smi / 2, (pos_smi + 0.5) >>> one); 509 assertEquals(pos_non_smi, (pos_smi + 0.5) << one); 510 assertEquals(pos_smi / 8, (pos_smi + 0.5) >> three); 511 assertEquals(pos_smi / 8, (pos_smi + 0.5) >>> three); 512 assertEquals(-0x2329b000, (pos_smi + 0.5) << three); 513 assertEquals(0x73594000, (pos_smi + 0.5) << five); 514 515 assertEquals(neg_smi / 2, (neg_smi) >> one); 516 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi) >>> one); 517 assertEquals(neg_non_smi, (neg_smi) << one); 518 assertEquals(neg_smi / 8, (neg_smi) >> three); 519 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi) >>> three); 520 assertEquals(0x46536000, (neg_smi) << four); 521 assertEquals(-0x73594000, (neg_smi) << five); 522 assertEquals(neg_smi, (neg_smi - 0.5) >> zero); 523 assertEquals(neg_smi + 0x100000000, (neg_smi - 0.5) >>> zero); 524 assertEquals(neg_smi, (neg_smi - 0.5) << zero); 525 assertEquals(neg_smi / 2, (neg_smi - 0.5) >> one); 526 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi - 0.5) >>> one); 527 assertEquals(neg_non_smi, (neg_smi - 0.5) << one); 528 assertEquals(neg_smi / 8, (neg_smi - 0.5) >> three); 529 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi - 0.5) >>> three); 530 assertEquals(0x46536000, (neg_smi - 0.5) << four); 531 assertEquals(-0x73594000, (neg_smi - 0.5) << five); 532 // End block A repeat 2 533 534 // Repeat previous block, with computed values in the shift variables. 535 five = 0; 536 while (five < 5 ) ++five; 537 four = five - one; 538 three = four - one; 539 one = four - three; 540 zero = one - one; 541 542 // Begin block A repeat 3 543 assertEquals(pos_non_smi, (pos_non_smi) >> zero); 544 assertEquals(pos_non_smi, (pos_non_smi) >>> zero); 545 assertEquals(pos_non_smi, (pos_non_smi) << zero); 546 assertEquals(neg_non_smi, (neg_non_smi) >> zero); 547 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi) >>> zero); 548 assertEquals(neg_non_smi, (neg_non_smi) << zero); 549 assertEquals(pos_smi, (pos_smi) >> zero); 550 assertEquals(pos_smi, (pos_smi) >>> zero); 551 assertEquals(pos_smi, (pos_smi) << zero); 552 assertEquals(neg_smi, (neg_smi) >> zero, "negsmi >> zero(2)"); 553 assertEquals(neg_smi + 0x100000000, (neg_smi) >>> zero); 554 assertEquals(neg_smi, (neg_smi) << zero, "negsmi << zero(2)"); 555 556 assertEquals(pos_non_smi / 2, (pos_non_smi) >> one); 557 assertEquals(pos_non_smi / 2, (pos_non_smi) >>> one); 558 assertEquals(-0x1194D800, (pos_non_smi) << one); 559 assertEquals(pos_non_smi / 8, (pos_non_smi) >> three); 560 assertEquals(pos_non_smi / 8, (pos_non_smi) >>> three); 561 assertEquals(-0x46536000, (pos_non_smi) << three); 562 assertEquals(0x73594000, (pos_non_smi) << four); 563 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >> zero); 564 assertEquals(pos_non_smi, (pos_non_smi + 0.5) >>> zero); 565 assertEquals(pos_non_smi, (pos_non_smi + 0.5) << zero); 566 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >> one); 567 assertEquals(pos_non_smi / 2, (pos_non_smi + 0.5) >>> one); 568 assertEquals(-0x1194D800, (pos_non_smi + 0.5) << one); 569 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >> three); 570 assertEquals(pos_non_smi / 8, (pos_non_smi + 0.5) >>> three); 571 assertEquals(-0x46536000, (pos_non_smi + 0.5) << three); 572 assertEquals(0x73594000, (pos_non_smi + 0.5) << four); 573 574 assertEquals(neg_non_smi / 2, (neg_non_smi) >> one); 575 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi) >>> one); 576 assertEquals(0x1194D800, (neg_non_smi) << one); 577 assertEquals(neg_non_smi / 8, (neg_non_smi) >> three); 578 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi) >>> three); 579 assertEquals(0x46536000, (neg_non_smi) << three); 580 assertEquals(-0x73594000, (neg_non_smi) << four); 581 assertEquals(neg_non_smi, (neg_non_smi - 0.5) >> zero); 582 assertEquals(neg_non_smi + 0x100000000, (neg_non_smi - 0.5) >>> zero); 583 assertEquals(neg_non_smi, (neg_non_smi - 0.5) << zero); 584 assertEquals(neg_non_smi / 2, (neg_non_smi - 0.5) >> one); 585 assertEquals(neg_non_smi / 2 + 0x100000000 / 2, (neg_non_smi - 0.5) >>> one); 586 assertEquals(0x1194D800, (neg_non_smi - 0.5) << one); 587 assertEquals(neg_non_smi / 8, (neg_non_smi - 0.5) >> three); 588 assertEquals(neg_non_smi / 8 + 0x100000000 / 8, (neg_non_smi - 0.5) 589 >>> three); 590 assertEquals(0x46536000, (neg_non_smi - 0.5) << three); 591 assertEquals(-0x73594000, (neg_non_smi - 0.5) << four); 592 593 assertEquals(pos_smi / 2, (pos_smi) >> one); 594 assertEquals(pos_smi / 2, (pos_smi) >>> one); 595 assertEquals(pos_non_smi, (pos_smi) << one); 596 assertEquals(pos_smi / 8, (pos_smi) >> three); 597 assertEquals(pos_smi / 8, (pos_smi) >>> three); 598 assertEquals(-0x2329b000, (pos_smi) << three); 599 assertEquals(0x73594000, (pos_smi) << five); 600 assertEquals(pos_smi, (pos_smi + 0.5) >> zero); 601 assertEquals(pos_smi, (pos_smi + 0.5) >>> zero); 602 assertEquals(pos_smi, (pos_smi + 0.5) << zero); 603 assertEquals(pos_smi / 2, (pos_smi + 0.5) >> one); 604 assertEquals(pos_smi / 2, (pos_smi + 0.5) >>> one); 605 assertEquals(pos_non_smi, (pos_smi + 0.5) << one); 606 assertEquals(pos_smi / 8, (pos_smi + 0.5) >> three); 607 assertEquals(pos_smi / 8, (pos_smi + 0.5) >>> three); 608 assertEquals(-0x2329b000, (pos_smi + 0.5) << three); 609 assertEquals(0x73594000, (pos_smi + 0.5) << five); 610 611 assertEquals(neg_smi / 2, (neg_smi) >> one); 612 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi) >>> one); 613 assertEquals(neg_non_smi, (neg_smi) << one); 614 assertEquals(neg_smi / 8, (neg_smi) >> three); 615 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi) >>> three); 616 assertEquals(0x46536000, (neg_smi) << four); 617 assertEquals(-0x73594000, (neg_smi) << five); 618 assertEquals(neg_smi, (neg_smi - 0.5) >> zero, "negsmi.5 >> zero"); 619 assertEquals(neg_smi + 0x100000000, (neg_smi - 0.5) >>> zero); 620 assertEquals(neg_smi, (neg_smi - 0.5) << zero, "negsmi.5 << zero"); 621 assertEquals(neg_smi / 2, (neg_smi - 0.5) >> one); 622 assertEquals(neg_smi / 2 + 0x100000000 / 2, (neg_smi - 0.5) >>> one); 623 assertEquals(neg_non_smi, (neg_smi - 0.5) << one); 624 assertEquals(neg_smi / 8, (neg_smi - 0.5) >> three); 625 assertEquals(neg_smi / 8 + 0x100000000 / 8, (neg_smi - 0.5) >>> three); 626 assertEquals(0x46536000, (neg_smi - 0.5) << four); 627 assertEquals(-0x73594000, (neg_smi - 0.5) << five); 628 // End block A repeat 3 629 630 // Test non-integer shift value 631 assertEquals(5, 20.5 >> 2.4); 632 assertEquals(5, 20.5 >> 2.7); 633 var shift = 2.4; 634 assertEquals(5, 20.5 >> shift); 635 assertEquals(5, 20.5 >> shift + 0.3); 636 shift = shift + zero; 637 assertEquals(5, 20.5 >> shift); 638 assertEquals(5, 20.5 >> shift + 0.3); 639 } 640 641 testShiftNonSmis(); 642 643 function intConversion() { 644 function foo(x) { 645 assertEquals(x, (x * 1.0000000001) | 0, "foo more " + x); 646 assertEquals(x, x | 0, "foo " + x); 647 if (x > 0) { 648 assertEquals(x - 1, (x * 0.9999999999) | 0, "foo less " + x); 649 } else { 650 assertEquals(x + 1, (x * 0.9999999999) | 0, "foo less " + x); 651 } 652 } 653 for (var i = 1; i < 0x80000000; i *= 2) { 654 foo(i); 655 foo(-i); 656 } 657 for (var i = 1; i < 1/0; i *= 2) { 658 assertEquals(i | 0, (i * 1.0000000000000001) | 0, "b" + i); 659 assertEquals(-i | 0, (i * -1.0000000000000001) | 0, "c" + i); 660 } 661 for (var i = 0.5; i > 0; i /= 2) { 662 assertEquals(0, i | 0, "d" + i); 663 assertEquals(0, -i | 0, "e" + i); 664 } 665 } 666 667 intConversion(); 668 669 // Verify that we handle the (optimized) corner case of shifting by 670 // zero even for non-smis. 671 function shiftByZero(n) { return n << 0; } 672 673 assertEquals(3, shiftByZero(3.1415)); 674
