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 198
 199 <h1>Class <code>nixio.bit</code></h1>
 200
 201 <p>
 202  Bitfield operators and mainpulation functions.
 203  Can be used as a drop-in replacement for bitlib.</p>
 204
 205
 206
 207
 208
 209
 210
 211 <h2>Functions</h2>
 212 <table class="function_list">
 213
 214         <tr>
 215         <td class="name" nowrap><a href="#arshift">arshift</a>&nbsp;(oper, shift)</td>
 216         <td class="summary">
 217  Arithmetically right shift a number.</td>
 218         </tr>
 219
 220         <tr>
 221         <td class="name" nowrap><a href="#band">band</a>&nbsp;(oper1, oper2, ...)</td>
 222         <td class="summary">
 223  Bitwise AND several numbers.</td>
 224         </tr>
 225
 226         <tr>
 227         <td class="name" nowrap><a href="#bnot">bnot</a>&nbsp;(oper)</td>
 228         <td class="summary">
 229  Invert given number.</td>
 230         </tr>
 231
 232         <tr>
 233         <td class="name" nowrap><a href="#bor">bor</a>&nbsp;(oper1, oper2, ...)</td>
 234         <td class="summary">
 235  Bitwise OR several numbers.</td>
 236         </tr>
 237
 238         <tr>
 239         <td class="name" nowrap><a href="#bxor">bxor</a>&nbsp;(oper1, oper2, ...)</td>
 240         <td class="summary">
 241  Bitwise XOR several numbers.</td>
 242         </tr>
 243
 244         <tr>
 245         <td class="name" nowrap><a href="#cast">cast</a>&nbsp;(oper)</td>
 246         <td class="summary">
 247  Cast a number to the bit-operating range.</td>
 248         </tr>
 249
 250         <tr>
 251         <td class="name" nowrap><a href="#check">check</a>&nbsp;(bitfield, flag1, ...)</td>
 252         <td class="summary">
 253  Checks whether given flags are set in a bitfield.</td>
 254         </tr>
 255
 256         <tr>
 257         <td class="name" nowrap><a href="#div">div</a>&nbsp;(oper1, oper2, ...)</td>
 258         <td class="summary">
 259  Integer division of 2 or more numbers.</td>
 260         </tr>
 261
 262         <tr>
 263         <td class="name" nowrap><a href="#lshift">lshift</a>&nbsp;(oper, shift)</td>
 264         <td class="summary">
 265  Left shift a number.</td>
 266         </tr>
 267
 268         <tr>
 269         <td class="name" nowrap><a href="#rshift">rshift</a>&nbsp;(oper, shift)</td>
 270         <td class="summary">
 271  Right shift a number.</td>
 272         </tr>
 273
 274         <tr>
 275         <td class="name" nowrap><a href="#set">set</a>&nbsp;(bitfield, flag1, ...)</td>
 276         <td class="summary">
 277  Sets one or more flags of a bitfield.</td>
 278         </tr>
 279
 280         <tr>
 281         <td class="name" nowrap><a href="#unset">unset</a>&nbsp;(bitfield, flag1, ...)</td>
 282         <td class="summary">
 283  Unsets one or more flags of a bitfield.</td>
 284         </tr>
 285
 286 </table>
 287
 288
 289
 290
 291
 292
 293 <br/>
 294 <br/>
 295
 296
 297 <h2><a name="functions"></a>Functions</h2>
 298 <dl class="function">
 299
 300
 301
 302 <dt><a name="arshift"></a><strong>arshift</strong>&nbsp;(oper, shift)</dt>
 303 <dd>
 304
 305  Arithmetically right shift a number.
 306
 307
 308 <h3>Parameters</h3>
 309 <ul>
 310
 311         <li>
 312           oper: number
 313         </li>
 314
 315         <li>
 316           shift: bits to shift
 317         </li>
 318
 319 </ul>
 320
 321
 322
 323
 324
 325
 326 <h3>Return value:</h3>
 327 number
 328
 329
 330
 331 </dd>
 332
 333
 334
 335
 336 <dt><a name="band"></a><strong>band</strong>&nbsp;(oper1, oper2, ...)</dt>
 337 <dd>
 338
 339  Bitwise AND several numbers.
 340
 341
 342 <h3>Parameters</h3>
 343 <ul>
 344
 345         <li>
 346           oper1: First Operand
 347         </li>
 348
 349         <li>
 350           oper2: Second Operand
 351         </li>
 352
 353         <li>
 354           ...: More Operands
 355         </li>
 356
 357 </ul>
 358
 359
 360
 361
 362
 363
 364 <h3>Return value:</h3>
 365 number
 366
 367
 368
 369 </dd>
 370
 371
 372
 373
 374 <dt><a name="bnot"></a><strong>bnot</strong>&nbsp;(oper)</dt>
 375 <dd>
 376
 377  Invert given number.
 378
 379
 380 <h3>Parameters</h3>
 381 <ul>
 382
 383         <li>
 384           oper: Operand
 385         </li>
 386
 387 </ul>
 388
 389
 390
 391
 392
 393
 394 <h3>Return value:</h3>
 395 number
 396
 397
 398
 399 </dd>
 400
 401
 402
 403
 404 <dt><a name="bor"></a><strong>bor</strong>&nbsp;(oper1, oper2, ...)</dt>
 405 <dd>
 406
 407  Bitwise OR several numbers.
 408
 409
 410 <h3>Parameters</h3>
 411 <ul>
 412
 413         <li>
 414           oper1: First Operand
 415         </li>
 416
 417         <li>
 418           oper2: Second Operand
 419         </li>
 420
 421         <li>
 422           ...: More Operands
 423         </li>
 424
 425 </ul>
 426
 427
 428
 429
 430
 431
 432 <h3>Return value:</h3>
 433 number
 434
 435
 436
 437 </dd>
 438
 439
 440
 441
 442 <dt><a name="bxor"></a><strong>bxor</strong>&nbsp;(oper1, oper2, ...)</dt>
 443 <dd>
 444
 445  Bitwise XOR several numbers.
 446
 447
 448 <h3>Parameters</h3>
 449 <ul>
 450
 451         <li>
 452           oper1: First Operand
 453         </li>
 454
 455         <li>
 456           oper2: Second Operand
 457         </li>
 458
 459         <li>
 460           ...: More Operands
 461         </li>
 462
 463 </ul>
 464
 465
 466
 467
 468
 469
 470 <h3>Return value:</h3>
 471 number
 472
 473
 474
 475 </dd>
 476
 477
 478
 479
 480 <dt><a name="cast"></a><strong>cast</strong>&nbsp;(oper)</dt>
 481 <dd>
 482
 483  Cast a number to the bit-operating range.
 484
 485
 486 <h3>Parameters</h3>
 487 <ul>
 488
 489         <li>
 490           oper: number
 491         </li>
 492
 493 </ul>
 494
 495
 496
 497
 498
 499
 500 <h3>Return value:</h3>
 501 number
 502
 503
 504
 505 </dd>
 506
 507
 508
 509
 510 <dt><a name="check"></a><strong>check</strong>&nbsp;(bitfield, flag1, ...)</dt>
 511 <dd>
 512
 513  Checks whether given flags are set in a bitfield.
 514
 515
 516 <h3>Parameters</h3>
 517 <ul>
 518
 519         <li>
 520           bitfield: Bitfield
 521         </li>
 522
 523         <li>
 524           flag1: First Flag
 525         </li>
 526
 527         <li>
 528           ...: More Flags
 529         </li>
 530
 531 </ul>
 532
 533
 534
 535
 536
 537
 538 <h3>Return value:</h3>
 539 true when all flags are set, otherwise false
 540
 541
 542
 543 </dd>
 544
 545
 546
 547
 548 <dt><a name="div"></a><strong>div</strong>&nbsp;(oper1, oper2, ...)</dt>
 549 <dd>
 550
 551  Integer division of 2 or more numbers.
 552
 553
 554 <h3>Parameters</h3>
 555 <ul>
 556
 557         <li>
 558           oper1: Operand 1
 559         </li>
 560
 561         <li>
 562           oper2: Operand 2
 563         </li>
 564
 565         <li>
 566           ...: More Operands
 567         </li>
 568
 569 </ul>
 570
 571
 572
 573
 574
 575
 576 <h3>Return value:</h3>
 577 number
 578
 579
 580
 581 </dd>
 582
 583
 584
 585
 586 <dt><a name="lshift"></a><strong>lshift</strong>&nbsp;(oper, shift)</dt>
 587 <dd>
 588
 589  Left shift a number.
 590
 591
 592 <h3>Parameters</h3>
 593 <ul>
 594
 595         <li>
 596           oper: number
 597         </li>
 598
 599         <li>
 600           shift: bits to shift
 601         </li>
 602
 603 </ul>
 604
 605
 606
 607
 608
 609
 610 <h3>Return value:</h3>
 611 number
 612
 613
 614
 615 </dd>
 616
 617
 618
 619
 620 <dt><a name="rshift"></a><strong>rshift</strong>&nbsp;(oper, shift)</dt>
 621 <dd>
 622
 623  Right shift a number.
 624
 625
 626 <h3>Parameters</h3>
 627 <ul>
 628
 629         <li>
 630           oper: number
 631         </li>
 632
 633         <li>
 634           shift: bits to shift
 635         </li>
 636
 637 </ul>
 638
 639
 640
 641
 642
 643
 644 <h3>Return value:</h3>
 645 number
 646
 647
 648
 649 </dd>
 650
 651
 652
 653
 654 <dt><a name="set"></a><strong>set</strong>&nbsp;(bitfield, flag1, ...)</dt>
 655 <dd>
 656
 657  Sets one or more flags of a bitfield.
 658
 659
 660 <h3>Parameters</h3>
 661 <ul>
 662
 663         <li>
 664           bitfield: Bitfield
 665         </li>
 666
 667         <li>
 668           flag1: First Flag
 669         </li>
 670
 671         <li>
 672           ...: More Flags
 673         </li>
 674
 675 </ul>
 676
 677
 678
 679
 680
 681
 682 <h3>Return value:</h3>
 683 altered bitfield
 684
 685
 686
 687 </dd>
 688
 689
 690
 691
 692 <dt><a name="unset"></a><strong>unset</strong>&nbsp;(bitfield, flag1, ...)</dt>
 693 <dd>
 694
 695  Unsets one or more flags of a bitfield.
 696
 697
 698 <h3>Parameters</h3>
 699 <ul>
 700
 701         <li>
 702           bitfield: Bitfield
 703         </li>
 704
 705         <li>
 706           flag1: First Flag
 707         </li>
 708
 709         <li>
 710           ...: More Flags
 711         </li>
 712
 713 </ul>
 714
 715
 716
 717
 718
 719
 720 <h3>Return value:</h3>
 721 altered bitfield
 722
 723
 724
 725 </dd>
 726
 727
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