timevalops.c revision 1.1.1.5
1/* $NetBSD: timevalops.c,v 1.1.1.5 2016/01/08 21:21:33 christos Exp $ */ 2 3#include "config.h" 4 5//some unused features are still in the wrapper, unconverted 6 7#include "ntp_types.h" 8#include "ntp_fp.h" 9 10#include "timevalops.h" 11 12#include <math.h> 13#include "unity.h" 14 15 16#define TEST_ASSERT_EQUAL_timeval(a, b) { \ 17 TEST_ASSERT_EQUAL_MESSAGE(a.tv_sec, b.tv_sec, "Field tv_sec"); \ 18 TEST_ASSERT_EQUAL_MESSAGE(a.tv_usec, b.tv_usec, "Field tv_usec"); \ 19} 20 21 22static u_int32 my_tick_to_tsf(u_int32 ticks); 23static u_int32 my_tsf_to_tick(u_int32 tsf); 24 25 26// that's it... 27typedef struct { 28 long usec; 29 u_int32 frac; 30} lfpfracdata ; 31 32typedef int bool; 33 34struct timeval timeval_init( time_t hi, long lo); 35const bool timeval_isValid(struct timeval V); 36l_fp l_fp_init(int32 i, u_int32 f); 37bool AssertTimevalClose(const struct timeval m, const struct timeval n, const struct timeval limit); 38bool AssertFpClose(const l_fp m, const l_fp n, const l_fp limit); 39 40void setUp(void); 41void test_Helpers1(void); 42void test_Normalise(void); 43void test_SignNoFrac(void); 44void test_SignWithFrac(void); 45void test_CmpFracEQ(void); 46void test_CmpFracGT(void); 47void test_CmpFracLT(void); 48void test_AddFullNorm(void); 49void test_AddFullOflow1(void); 50void test_AddUsecNorm(void); 51void test_AddUsecOflow1(void); 52void test_SubFullNorm(void); 53void test_SubFullOflow(void); 54void test_SubUsecNorm(void); 55void test_SubUsecOflow(void); 56void test_Neg(void); 57void test_AbsNoFrac(void); 58void test_AbsWithFrac(void); 59void test_Helpers2(void); 60void test_ToLFPbittest(void); 61void test_ToLFPrelPos(void); 62void test_ToLFPrelNeg(void); 63void test_ToLFPabs(void); 64void test_FromLFPbittest(void); 65void test_FromLFPrelPos(void); 66void test_FromLFPrelNeg(void); 67void test_LFProundtrip(void); 68void test_ToString(void); 69 70 71//**********************************MY CUSTOM FUNCTIONS*********************** 72 73 74void 75setUp(void) 76{ 77 init_lib(); 78 79 return; 80} 81 82 83struct timeval 84timeval_init(time_t hi, long lo) 85{ 86 struct timeval V; 87 88 V.tv_sec = hi; 89 V.tv_usec = lo; 90 91 return V; 92} 93 94 95const bool 96timeval_isValid(struct timeval V) 97{ 98 99 return V.tv_usec >= 0 && V.tv_usec < 1000000; 100} 101 102 103l_fp 104l_fp_init(int32 i, u_int32 f) 105{ 106 l_fp temp; 107 108 temp.l_i = i; 109 temp.l_uf = f; 110 111 return temp; 112} 113 114 115bool 116AssertTimevalClose(const struct timeval m, const struct timeval n, const struct timeval limit) 117{ 118 struct timeval diff; 119 120 diff = abs_tval(sub_tval(m, n)); 121 if (cmp_tval(limit, diff) >= 0) 122 return TRUE; 123 else 124 { 125 printf("m_expr which is %ld.%lu \nand\nn_expr which is %ld.%lu\nare not close; diff=%ld.%luusec\n", m.tv_sec, m.tv_usec, n.tv_sec, n.tv_usec, diff.tv_sec, diff.tv_usec); 126 //I don't have variables m_expr and n_expr in unity, those are command line arguments which only getst has!!! 127 128 return FALSE; 129 } 130} 131 132 133bool 134AssertFpClose(const l_fp m, const l_fp n, const l_fp limit) 135{ 136 l_fp diff; 137 138 if (L_ISGEQ(&m, &n)) { 139 diff = m; 140 L_SUB(&diff, &n); 141 } else { 142 diff = n; 143 L_SUB(&diff, &m); 144 } 145 if (L_ISGEQ(&limit, &diff)) { 146 return TRUE; 147 } 148 else { 149 printf("m_expr which is %s \nand\nn_expr which is %s\nare not close; diff=%susec\n", lfptoa(&m, 10), lfptoa(&n, 10), lfptoa(&diff, 10)); 150 //printf("m_expr which is %d.%d \nand\nn_expr which is %d.%d\nare not close; diff=%d.%dusec\n", m.l_uf, m.Ul_i, n.l_uf, n.Ul_i, diff.l_uf, diff.Ul_i); 151 return FALSE; 152 } 153} 154 155 156//--------------------------------------------------- 157 158static const lfpfracdata fdata[] = { 159 { 0, 0x00000000 }, { 7478, 0x01ea1405 }, 160 { 22077, 0x05a6d699 }, { 125000, 0x20000000 }, 161 { 180326, 0x2e29d841 }, { 207979, 0x353e1c9b }, 162 { 250000, 0x40000000 }, { 269509, 0x44fe8ab5 }, 163 { 330441, 0x5497c808 }, { 333038, 0x5541fa76 }, 164 { 375000, 0x60000000 }, { 394734, 0x650d4995 }, 165 { 446327, 0x72427c7c }, { 500000, 0x80000000 }, 166 { 517139, 0x846338b4 }, { 571953, 0x926b8306 }, 167 { 587353, 0x965cc426 }, { 625000, 0xa0000000 }, 168 { 692136, 0xb12fd32c }, { 750000, 0xc0000000 }, 169 { 834068, 0xd5857aff }, { 848454, 0xd9344806 }, 170 { 854222, 0xdaae4b02 }, { 861465, 0xdc88f862 }, 171 { 875000, 0xe0000000 }, { 910661, 0xe921144d }, 172 { 922162, 0xec12cf10 }, { 942190, 0xf1335d25 } 173}; 174 175 176u_int32 177my_tick_to_tsf(u_int32 ticks) 178{ 179 // convert microseconds to l_fp fractional units, using double 180 // precision float calculations or, if available, 64bit integer 181 // arithmetic. This should give the precise fraction, rounded to 182 // the nearest representation. 183 184#ifdef HAVE_U_INT64 185 return (u_int32)((( ((u_int64)(ticks)) << 32) + 500000) / 1000000); //I put too much () when casting just to be safe 186#else 187 return (u_int32)( ((double)(ticks)) * 4294.967296 + 0.5); 188#endif 189 // And before you ask: if ticks >= 1000000, the result is 190 // truncated nonsense, so don't use it out-of-bounds. 191} 192 193 194u_int32 195my_tsf_to_tick(u_int32 tsf) 196{ 197 // Inverse operation: converts fraction to microseconds. 198#ifdef HAVE_U_INT64 199 return (u_int32)( ((u_int64)(tsf) * 1000000 + 0x80000000) >> 32); //CHECK ME!!! 200#else 201 return (u_int32)(double(tsf) / 4294.967296 + 0.5); 202#endif 203 // Beware: The result might be 10^6 due to rounding! 204} 205 206 207//*******************************END OF CUSTOM FUNCTIONS********************* 208 209 210// --------------------------------------------------------------------- 211// test support stuff - part1 212// --------------------------------------------------------------------- 213 214void 215test_Helpers1(void) 216{ 217 struct timeval x; 218 219 for (x.tv_sec = -2; x.tv_sec < 3; x.tv_sec++) { 220 x.tv_usec = -1; 221 TEST_ASSERT_FALSE(timeval_isValid(x)); 222 x.tv_usec = 0; 223 TEST_ASSERT_TRUE(timeval_isValid(x)); 224 x.tv_usec = 999999; 225 TEST_ASSERT_TRUE(timeval_isValid(x)); 226 x.tv_usec = 1000000; 227 TEST_ASSERT_FALSE(timeval_isValid(x)); 228 } 229 230 return; 231} 232 233 234//---------------------------------------------------------------------- 235// test normalisation 236//---------------------------------------------------------------------- 237 238void 239test_Normalise(void) 240{ 241 long ns; 242 243 for (ns = -2000000000; ns <= 2000000000; ns += 10000000) { 244 struct timeval x = timeval_init(0, ns); 245 246 x = normalize_tval(x); 247 TEST_ASSERT_TRUE(timeval_isValid(x)); 248 } 249 250 return; 251} 252 253//---------------------------------------------------------------------- 254// test classification 255//---------------------------------------------------------------------- 256 257void 258test_SignNoFrac(void) 259{ 260 int i; 261 262 // sign test, no fraction 263 for (i = -4; i <= 4; ++i) { 264 struct timeval a = timeval_init(i, 0); 265 int E = (i > 0) - (i < 0); 266 int r = test_tval(a); 267 268 TEST_ASSERT_EQUAL(E, r); 269 } 270 271 return; 272} 273 274 275void 276test_SignWithFrac(void) 277{ 278 // sign test, with fraction 279 int i; 280 281 for (i = -4; i <= 4; ++i) { 282 struct timeval a = timeval_init(i, 10); 283 int E = (i >= 0) - (i < 0); 284 int r = test_tval(a); 285 286 TEST_ASSERT_EQUAL(E, r); 287 } 288 289 return; 290} 291 292//---------------------------------------------------------------------- 293// test compare 294//---------------------------------------------------------------------- 295void 296test_CmpFracEQ(void) 297{ 298 int i, j; 299 300 // fractions are equal 301 for (i = -4; i <= 4; ++i) 302 for (j = -4; j <= 4; ++j) { 303 struct timeval a = timeval_init(i, 200); 304 struct timeval b = timeval_init(j, 200); 305 int E = (i > j) - (i < j); 306 int r = cmp_tval_denorm(a, b); 307 308 TEST_ASSERT_EQUAL(E, r); 309 } 310 311 return; 312} 313 314 315void 316test_CmpFracGT(void) 317{ 318 // fraction a bigger fraction b 319 int i, j; 320 321 for (i = -4; i <= 4; ++i) 322 for (j = -4; j <= 4; ++j) { 323 struct timeval a = timeval_init( i , 999800); 324 struct timeval b = timeval_init( j , 200); 325 int E = (i >= j) - (i < j); 326 int r = cmp_tval_denorm(a, b); 327 328 TEST_ASSERT_EQUAL(E, r); 329 } 330 331 return; 332} 333 334 335void 336test_CmpFracLT(void) 337{ 338 // fraction a less fraction b 339 int i, j; 340 341 for (i = -4; i <= 4; ++i) 342 for (j = -4; j <= 4; ++j) { 343 struct timeval a = timeval_init(i, 200); 344 struct timeval b = timeval_init(j, 999800); 345 int E = (i > j) - (i <= j); 346 int r = cmp_tval_denorm(a, b); 347 348 TEST_ASSERT_EQUAL(E, r); 349 } 350 351 return; 352} 353 354//---------------------------------------------------------------------- 355// Test addition (sum) 356//---------------------------------------------------------------------- 357 358void 359test_AddFullNorm(void) 360{ 361 int i, j; 362 363 for (i = -4; i <= 4; ++i) 364 for (j = -4; j <= 4; ++j) { 365 struct timeval a = timeval_init(i, 200); 366 struct timeval b = timeval_init(j, 400); 367 struct timeval E = timeval_init(i + j, 200 + 400); 368 struct timeval c; 369 370 c = add_tval(a, b); 371 TEST_ASSERT_EQUAL_timeval(E, c); 372 } 373 374 return; 375} 376 377 378void 379test_AddFullOflow1(void) 380{ 381 int i, j; 382 383 for (i = -4; i <= 4; ++i) 384 for (j = -4; j <= 4; ++j) { 385 struct timeval a = timeval_init(i, 200); 386 struct timeval b = timeval_init(j, 999900); 387 struct timeval E = timeval_init(i + j + 1, 100); 388 struct timeval c; 389 390 c = add_tval(a, b); 391 TEST_ASSERT_EQUAL_timeval(E, c); 392 } 393 394 return; 395} 396 397 398void 399test_AddUsecNorm(void) 400{ 401 int i; 402 403 for (i = -4; i <= 4; ++i) { 404 struct timeval a = timeval_init(i, 200); 405 struct timeval E = timeval_init(i, 600); 406 struct timeval c; 407 408 c = add_tval_us(a, 600 - 200); 409 TEST_ASSERT_EQUAL_timeval(E, c); 410 } 411 412 return; 413} 414 415 416void 417test_AddUsecOflow1(void) 418{ 419 int i; 420 421 for (i = -4; i <= 4; ++i) { 422 struct timeval a = timeval_init(i, 200); 423 struct timeval E = timeval_init(i + 1, 100); 424 struct timeval c; 425 426 c = add_tval_us(a, MICROSECONDS - 100); 427 TEST_ASSERT_EQUAL_timeval(E, c); 428 } 429 430 return; 431} 432 433//---------------------------------------------------------------------- 434// test subtraction (difference) 435//---------------------------------------------------------------------- 436 437void 438test_SubFullNorm(void) 439{ 440 int i, j; 441 442 for (i = -4; i <= 4; ++i) 443 for (j = -4; j <= 4; ++j) { 444 struct timeval a = timeval_init(i, 600); 445 struct timeval b = timeval_init(j, 400); 446 struct timeval E = timeval_init(i - j, 600 - 400); 447 struct timeval c; 448 449 c = sub_tval(a, b); 450 TEST_ASSERT_EQUAL_timeval(E, c); 451 } 452 453 return; 454} 455 456 457void 458test_SubFullOflow(void) 459{ 460 int i, j; 461 462 for (i = -4; i <= 4; ++i) 463 for (j = -4; j <= 4; ++j) { 464 struct timeval a = timeval_init(i, 100); 465 struct timeval b = timeval_init(j, 999900); 466 struct timeval E = timeval_init(i - j - 1, 200); 467 struct timeval c; 468 469 c = sub_tval(a, b); 470 TEST_ASSERT_EQUAL_timeval(E, c); 471 } 472 473 return; 474} 475 476 477void 478test_SubUsecNorm(void) 479{ 480 int i = -4; 481 482 for (i = -4; i <= 4; ++i) { 483 struct timeval a = timeval_init(i, 600); 484 struct timeval E = timeval_init(i, 200); 485 struct timeval c; 486 487 c = sub_tval_us(a, 600 - 200); 488 TEST_ASSERT_EQUAL_timeval(E, c); 489 } 490 491 return; 492} 493 494 495void 496test_SubUsecOflow(void) 497{ 498 int i = -4; 499 500 for (i = -4; i <= 4; ++i) { 501 struct timeval a = timeval_init(i, 100); 502 struct timeval E = timeval_init(i - 1, 200); 503 struct timeval c; 504 505 c = sub_tval_us(a, MICROSECONDS - 100); 506 TEST_ASSERT_EQUAL_timeval(E, c); 507 } 508 509 return; 510} 511 512//---------------------------------------------------------------------- 513// test negation 514//---------------------------------------------------------------------- 515 516void 517test_Neg(void) 518{ 519 int i = -4; 520 521 for (i = -4; i <= 4; ++i) { 522 struct timeval a = timeval_init(i, 100); 523 struct timeval b; 524 struct timeval c; 525 526 b = neg_tval(a); 527 c = add_tval(a, b); 528 TEST_ASSERT_EQUAL(0, test_tval(c)); 529 } 530 531 return; 532} 533 534//---------------------------------------------------------------------- 535// test abs value 536//---------------------------------------------------------------------- 537 538void 539test_AbsNoFrac(void) 540{ 541 int i = -4; 542 543 for (i = -4; i <= 4; ++i) { 544 struct timeval a = timeval_init(i, 0); 545 struct timeval b; 546 547 b = abs_tval(a); 548 TEST_ASSERT_EQUAL((i != 0), test_tval(b)); 549 } 550 551 return; 552} 553 554 555void 556test_AbsWithFrac(void) 557{ 558 int i = -4; 559 560 for (i = -4; i <= 4; ++i) { 561 struct timeval a = timeval_init(i, 100); 562 struct timeval b; 563 564 b = abs_tval(a); 565 TEST_ASSERT_EQUAL(1, test_tval(b)); 566 } 567 568 return; 569} 570 571// --------------------------------------------------------------------- 572// test support stuff -- part 2 573// --------------------------------------------------------------------- 574 575 576void 577test_Helpers2(void) 578{ 579 struct timeval limit = timeval_init(0, 2); 580 struct timeval x, y; 581 long i; 582 583 for (x.tv_sec = -2; x.tv_sec < 3; x.tv_sec++) { 584 for (x.tv_usec = 1; 585 x.tv_usec < 1000000; 586 x.tv_usec += 499999) { 587 for (i = -4; i < 5; ++i) { 588 y = x; 589 y.tv_usec += i; 590 if (i >= -2 && i <= 2) { 591 TEST_ASSERT_TRUE(AssertTimevalClose(x, y, limit));//ASSERT_PRED_FORMAT2(isClose, x, y); 592 } 593 else { 594 TEST_ASSERT_FALSE(AssertTimevalClose(x, y, limit)); 595 } 596 } 597 } 598 } 599 600 return; 601} 602 603// and the global predicate instances we're using here 604 605//static l_fp lfpClose = l_fp_init(0, 1); //static AssertFpClose FpClose(0, 1); 606//static struct timeval timevalClose = timeval_init(0, 1); //static AssertTimevalClose TimevalClose(0, 1); 607 608//---------------------------------------------------------------------- 609// conversion to l_fp 610//---------------------------------------------------------------------- 611 612void 613test_ToLFPbittest(void) 614{ 615 l_fp lfpClose = l_fp_init(0, 1); 616 617 u_int32 i = 0; 618 for (i = 0; i < 1000000; ++i) { 619 struct timeval a = timeval_init(1, i); 620 l_fp E = l_fp_init(1, my_tick_to_tsf(i)); 621 l_fp r; 622 623 r = tval_intv_to_lfp(a); 624 TEST_ASSERT_TRUE(AssertFpClose(E, r, lfpClose)); //ASSERT_PRED_FORMAT2(FpClose, E, r); 625 } 626 627 return; 628} 629 630 631void 632test_ToLFPrelPos(void) 633{ 634 l_fp lfpClose = l_fp_init(0, 1); 635 int i = 0; 636 637 for (i = 0; i < COUNTOF(fdata); ++i) { 638 struct timeval a = timeval_init(1, fdata[i].usec); 639 l_fp E = l_fp_init(1, fdata[i].frac); 640 l_fp r; 641 642 r = tval_intv_to_lfp(a); 643 TEST_ASSERT_TRUE(AssertFpClose(E, r, lfpClose)); 644 } 645 646 return; 647} 648 649 650void 651test_ToLFPrelNeg(void) 652{ 653 l_fp lfpClose = l_fp_init(0, 1); 654 int i = 0; 655 656 for (i = 0; i < COUNTOF(fdata); ++i) { 657 struct timeval a = timeval_init(-1, fdata[i].usec); 658 l_fp E = l_fp_init(~0, fdata[i].frac); 659 l_fp r; 660 661 r = tval_intv_to_lfp(a); 662 TEST_ASSERT_TRUE(AssertFpClose(E, r, lfpClose)); 663 } 664 665 return; 666} 667 668 669void 670test_ToLFPabs(void) 671{ 672 l_fp lfpClose = l_fp_init(0, 1); 673 int i = 0; 674 675 for (i = 0; i < COUNTOF(fdata); ++i) { 676 struct timeval a = timeval_init(1, fdata[i].usec); 677 l_fp E = l_fp_init(1 + JAN_1970, fdata[i].frac); 678 l_fp r; 679 680 r = tval_stamp_to_lfp(a); 681 TEST_ASSERT_TRUE(AssertFpClose(E, r, lfpClose)); 682 } 683 684 return; 685} 686 687//---------------------------------------------------------------------- 688// conversion from l_fp 689//---------------------------------------------------------------------- 690 691void 692test_FromLFPbittest(void) 693{ 694 struct timeval timevalClose = timeval_init(0, 1); 695 // Not *exactly* a bittest, because 2**32 tests would take a 696 // really long time even on very fast machines! So we do test 697 // every 1000 fractional units. 698 u_int32 tsf = 0; 699 700 for (tsf = 0; tsf < ~((u_int32)(1000)); tsf += 1000) { 701 struct timeval E = timeval_init(1, my_tsf_to_tick(tsf)); 702 l_fp a = l_fp_init(1, tsf); 703 struct timeval r; 704 705 r = lfp_intv_to_tval(a); 706 // The conversion might be off by one microsecond when 707 // comparing to calculated value. 708 TEST_ASSERT_TRUE(AssertTimevalClose(E, r, timevalClose)); 709 } 710 711 return; 712} 713 714 715void 716test_FromLFPrelPos(void) 717{ 718 struct timeval timevalClose = timeval_init(0, 1); 719 int i = 0; 720 721 for (i = 0; i < COUNTOF(fdata); ++i) { 722 l_fp a = l_fp_init(1, fdata[i].frac); 723 struct timeval E = timeval_init(1, fdata[i].usec); 724 struct timeval r; 725 726 r = lfp_intv_to_tval(a); 727 TEST_ASSERT_TRUE(AssertTimevalClose(E, r, timevalClose)); 728 } 729 730 return; 731} 732 733 734void 735test_FromLFPrelNeg(void) 736{ 737 struct timeval timevalClose = timeval_init(0, 1); 738 int i = 0; 739 740 for (i = 0; i < COUNTOF(fdata); ++i) { 741 l_fp a = l_fp_init(~0, fdata[i].frac); 742 struct timeval E = timeval_init(-1, fdata[i].usec); 743 struct timeval r; 744 745 r = lfp_intv_to_tval(a); 746 TEST_ASSERT_TRUE(AssertTimevalClose(E, r, timevalClose)); 747 } 748 749 return; 750} 751 752 753// usec -> frac -> usec roundtrip, using a prime start and increment 754void 755test_LFProundtrip(void) 756{ 757 int32_t t = -1; 758 u_int32 i = 5; 759 760 for (t = -1; t < 2; ++t) 761 for (i = 5; i < 1000000; i += 11) { 762 struct timeval E = timeval_init(t, i); 763 l_fp a; 764 struct timeval r; 765 766 a = tval_intv_to_lfp(E); 767 r = lfp_intv_to_tval(a); 768 TEST_ASSERT_EQUAL_timeval(E, r); 769 } 770 771 return; 772} 773 774//---------------------------------------------------------------------- 775// string formatting 776//---------------------------------------------------------------------- 777 778void 779test_ToString(void) 780{ 781 static const struct { 782 time_t sec; 783 long usec; 784 const char * repr; 785 } data [] = { 786 { 0, 0, "0.000000" }, 787 { 2, 0, "2.000000" }, 788 {-2, 0, "-2.000000" }, 789 { 0, 1, "0.000001" }, 790 { 0,-1, "-0.000001" }, 791 { 1,-1, "0.999999" }, 792 {-1, 1, "-0.999999" }, 793 {-1,-1, "-1.000001" }, 794 }; 795 int i; 796 797 for (i = 0; i < COUNTOF(data); ++i) { 798 struct timeval a = timeval_init(data[i].sec, data[i].usec); 799 const char * E = data[i].repr; 800 const char * r = tvaltoa(a); 801 802 TEST_ASSERT_EQUAL_STRING(E, r); 803 } 804 805 return; 806} 807 808// -*- EOF -*- 809