17db96d56Sopenharmony_ci------------------------------------------------------------------------ 27db96d56Sopenharmony_ci-- logb.decTest -- return integral adjusted exponent as per 754r -- 37db96d56Sopenharmony_ci-- Copyright (c) IBM Corporation, 2005, 2009. All rights reserved. -- 47db96d56Sopenharmony_ci------------------------------------------------------------------------ 57db96d56Sopenharmony_ci-- Please see the document "General Decimal Arithmetic Testcases" -- 67db96d56Sopenharmony_ci-- at http://www2.hursley.ibm.com/decimal for the description of -- 77db96d56Sopenharmony_ci-- these testcases. -- 87db96d56Sopenharmony_ci-- -- 97db96d56Sopenharmony_ci-- These testcases are experimental ('beta' versions), and they -- 107db96d56Sopenharmony_ci-- may contain errors. They are offered on an as-is basis. In -- 117db96d56Sopenharmony_ci-- particular, achieving the same results as the tests here is not -- 127db96d56Sopenharmony_ci-- a guarantee that an implementation complies with any Standard -- 137db96d56Sopenharmony_ci-- or specification. The tests are not exhaustive. -- 147db96d56Sopenharmony_ci-- -- 157db96d56Sopenharmony_ci-- Please send comments, suggestions, and corrections to the author: -- 167db96d56Sopenharmony_ci-- Mike Cowlishaw, IBM Fellow -- 177db96d56Sopenharmony_ci-- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK -- 187db96d56Sopenharmony_ci-- mfc@uk.ibm.com -- 197db96d56Sopenharmony_ci------------------------------------------------------------------------ 207db96d56Sopenharmony_civersion: 2.59 217db96d56Sopenharmony_ci 227db96d56Sopenharmony_ci-- This emphasises the testing of notable cases, as they will often 237db96d56Sopenharmony_ci-- have unusual paths (especially the 10**n results). 247db96d56Sopenharmony_ci 257db96d56Sopenharmony_ciextended: 1 267db96d56Sopenharmony_cirounding: half_even 277db96d56Sopenharmony_cimaxExponent: 999 287db96d56Sopenharmony_ciminexponent: -999 297db96d56Sopenharmony_ci 307db96d56Sopenharmony_ci-- basics & examples 317db96d56Sopenharmony_ciprecision: 9 327db96d56Sopenharmony_cilogbx001 logb 0 -> -Infinity Division_by_zero 337db96d56Sopenharmony_cilogbx002 logb 1E-999 -> -999 347db96d56Sopenharmony_cilogbx003 logb 9E-999 -> -999 357db96d56Sopenharmony_cilogbx004 logb 0.001 -> -3 367db96d56Sopenharmony_cilogbx005 logb 0.03 -> -2 377db96d56Sopenharmony_cilogbx006 logb 1 -> 0 387db96d56Sopenharmony_cilogbx007 logb 2 -> 0 397db96d56Sopenharmony_cilogbx008 logb 2.5 -> 0 407db96d56Sopenharmony_cilogbx009 logb 2.50 -> 0 417db96d56Sopenharmony_cilogbx010 logb 10 -> 1 427db96d56Sopenharmony_cilogbx011 logb 70 -> 1 437db96d56Sopenharmony_cilogbx012 logb 100 -> 2 447db96d56Sopenharmony_cilogbx013 logb 250 -> 2 457db96d56Sopenharmony_cilogbx014 logb +Infinity -> Infinity 467db96d56Sopenharmony_ci 477db96d56Sopenharmony_ci-- negatives are treated as positives 487db96d56Sopenharmony_cilogbx021 logb -0 -> -Infinity Division_by_zero 497db96d56Sopenharmony_cilogbx022 logb -1E-999 -> -999 507db96d56Sopenharmony_cilogbx023 logb -9E-999 -> -999 517db96d56Sopenharmony_cilogbx024 logb -0.001 -> -3 527db96d56Sopenharmony_cilogbx025 logb -1 -> 0 537db96d56Sopenharmony_cilogbx026 logb -2 -> 0 547db96d56Sopenharmony_cilogbx027 logb -10 -> 1 557db96d56Sopenharmony_cilogbx028 logb -70 -> 1 567db96d56Sopenharmony_cilogbx029 logb -100 -> 2 577db96d56Sopenharmony_cilogbx030 logb -100000000 -> 8 587db96d56Sopenharmony_cilogbx031 logb -Infinity -> Infinity 597db96d56Sopenharmony_ci 607db96d56Sopenharmony_ci-- zeros 617db96d56Sopenharmony_cilogbx111 logb 0 -> -Infinity Division_by_zero 627db96d56Sopenharmony_cilogbx112 logb -0 -> -Infinity Division_by_zero 637db96d56Sopenharmony_cilogbx113 logb 0E+4 -> -Infinity Division_by_zero 647db96d56Sopenharmony_cilogbx114 logb -0E+4 -> -Infinity Division_by_zero 657db96d56Sopenharmony_cilogbx115 logb 0.0000 -> -Infinity Division_by_zero 667db96d56Sopenharmony_cilogbx116 logb -0.0000 -> -Infinity Division_by_zero 677db96d56Sopenharmony_cilogbx117 logb 0E-141 -> -Infinity Division_by_zero 687db96d56Sopenharmony_cilogbx118 logb -0E-141 -> -Infinity Division_by_zero 697db96d56Sopenharmony_ci 707db96d56Sopenharmony_ci-- full coefficients, alternating bits 717db96d56Sopenharmony_cilogbx121 logb 268268268 -> 8 727db96d56Sopenharmony_cilogbx122 logb -268268268 -> 8 737db96d56Sopenharmony_cilogbx123 logb 134134134 -> 8 747db96d56Sopenharmony_cilogbx124 logb -134134134 -> 8 757db96d56Sopenharmony_ci 767db96d56Sopenharmony_ci-- Nmax, Nmin, Ntiny 777db96d56Sopenharmony_cilogbx131 logb 9.99999999E+999 -> 999 787db96d56Sopenharmony_cilogbx132 logb 1E-999 -> -999 797db96d56Sopenharmony_cilogbx133 logb 1.00000000E-999 -> -999 807db96d56Sopenharmony_cilogbx134 logb 1E-1007 -> -1007 817db96d56Sopenharmony_ci 827db96d56Sopenharmony_cilogbx135 logb -1E-1007 -> -1007 837db96d56Sopenharmony_cilogbx136 logb -1.00000000E-999 -> -999 847db96d56Sopenharmony_cilogbx137 logb -1E-999 -> -999 857db96d56Sopenharmony_cilogbx138 logb -9.99999999E+999 -> 999 867db96d56Sopenharmony_ci 877db96d56Sopenharmony_ci-- ones 887db96d56Sopenharmony_cilogbx0061 logb 1 -> 0 897db96d56Sopenharmony_cilogbx0062 logb 1.0 -> 0 907db96d56Sopenharmony_cilogbx0063 logb 1.000000000000000 -> 0 917db96d56Sopenharmony_cilogbx0064 logb 1.000000000000000000 -> 0 927db96d56Sopenharmony_ci 937db96d56Sopenharmony_ci-- notable cases -- exact powers of 10 947db96d56Sopenharmony_cilogbx1100 logb 1 -> 0 957db96d56Sopenharmony_cilogbx1101 logb 10 -> 1 967db96d56Sopenharmony_cilogbx1102 logb 100 -> 2 977db96d56Sopenharmony_cilogbx1103 logb 1000 -> 3 987db96d56Sopenharmony_cilogbx1104 logb 10000 -> 4 997db96d56Sopenharmony_cilogbx1105 logb 100000 -> 5 1007db96d56Sopenharmony_cilogbx1106 logb 1000000 -> 6 1017db96d56Sopenharmony_cilogbx1107 logb 10000000 -> 7 1027db96d56Sopenharmony_cilogbx1108 logb 100000000 -> 8 1037db96d56Sopenharmony_cilogbx1109 logb 1000000000 -> 9 1047db96d56Sopenharmony_cilogbx1110 logb 10000000000 -> 10 1057db96d56Sopenharmony_cilogbx1111 logb 100000000000 -> 11 1067db96d56Sopenharmony_cilogbx1112 logb 1000000000000 -> 12 1077db96d56Sopenharmony_cilogbx1113 logb 0.00000000001 -> -11 1087db96d56Sopenharmony_cilogbx1114 logb 0.0000000001 -> -10 1097db96d56Sopenharmony_cilogbx1115 logb 0.000000001 -> -9 1107db96d56Sopenharmony_cilogbx1116 logb 0.00000001 -> -8 1117db96d56Sopenharmony_cilogbx1117 logb 0.0000001 -> -7 1127db96d56Sopenharmony_cilogbx1118 logb 0.000001 -> -6 1137db96d56Sopenharmony_cilogbx1119 logb 0.00001 -> -5 1147db96d56Sopenharmony_cilogbx1120 logb 0.0001 -> -4 1157db96d56Sopenharmony_cilogbx1121 logb 0.001 -> -3 1167db96d56Sopenharmony_cilogbx1122 logb 0.01 -> -2 1177db96d56Sopenharmony_cilogbx1123 logb 0.1 -> -1 1187db96d56Sopenharmony_cilogbx1124 logb 1E-99 -> -99 1197db96d56Sopenharmony_cilogbx1125 logb 1E-100 -> -100 1207db96d56Sopenharmony_cilogbx1126 logb 1E-383 -> -383 1217db96d56Sopenharmony_cilogbx1127 logb 1E-999 -> -999 1227db96d56Sopenharmony_ci 1237db96d56Sopenharmony_ci-- suggestions from Ilan Nehama 1247db96d56Sopenharmony_cilogbx1400 logb 10E-3 -> -2 1257db96d56Sopenharmony_cilogbx1401 logb 10E-2 -> -1 1267db96d56Sopenharmony_cilogbx1402 logb 100E-2 -> 0 1277db96d56Sopenharmony_cilogbx1403 logb 1000E-2 -> 1 1287db96d56Sopenharmony_cilogbx1404 logb 10000E-2 -> 2 1297db96d56Sopenharmony_cilogbx1405 logb 10E-1 -> 0 1307db96d56Sopenharmony_cilogbx1406 logb 100E-1 -> 1 1317db96d56Sopenharmony_cilogbx1407 logb 1000E-1 -> 2 1327db96d56Sopenharmony_cilogbx1408 logb 10000E-1 -> 3 1337db96d56Sopenharmony_cilogbx1409 logb 10E0 -> 1 1347db96d56Sopenharmony_cilogbx1410 logb 100E0 -> 2 1357db96d56Sopenharmony_cilogbx1411 logb 1000E0 -> 3 1367db96d56Sopenharmony_cilogbx1412 logb 10000E0 -> 4 1377db96d56Sopenharmony_cilogbx1413 logb 10E1 -> 2 1387db96d56Sopenharmony_cilogbx1414 logb 100E1 -> 3 1397db96d56Sopenharmony_cilogbx1415 logb 1000E1 -> 4 1407db96d56Sopenharmony_cilogbx1416 logb 10000E1 -> 5 1417db96d56Sopenharmony_cilogbx1417 logb 10E2 -> 3 1427db96d56Sopenharmony_cilogbx1418 logb 100E2 -> 4 1437db96d56Sopenharmony_cilogbx1419 logb 1000E2 -> 5 1447db96d56Sopenharmony_cilogbx1420 logb 10000E2 -> 6 1457db96d56Sopenharmony_ci 1467db96d56Sopenharmony_ci-- inexacts 1477db96d56Sopenharmony_ciprecision: 2 1487db96d56Sopenharmony_cilogbx1500 logb 10000E2 -> 6 1497db96d56Sopenharmony_cilogbx1501 logb 1E+99 -> 99 1507db96d56Sopenharmony_cilogbx1502 logb 1E-99 -> -99 1517db96d56Sopenharmony_cilogbx1503 logb 1E+100 -> 1.0E+2 Rounded 1527db96d56Sopenharmony_cilogbx1504 logb 1E+999 -> 1.0E+3 Inexact Rounded 1537db96d56Sopenharmony_cilogbx1505 logb 1E-100 -> -1.0E+2 Rounded 1547db96d56Sopenharmony_cilogbx1506 logb 1E-999 -> -1.0E+3 Inexact Rounded 1557db96d56Sopenharmony_cilogbx1507 logb 1E-1111 -> -1.1E+3 Inexact Rounded 1567db96d56Sopenharmony_cilogbx1508 logb 1E-3333 -> -3.3E+3 Inexact Rounded 1577db96d56Sopenharmony_cilogbx1509 logb 1E-6666 -> -6.7E+3 Inexact Rounded 1587db96d56Sopenharmony_cilogbx1510 logb 1E+999999999 -> 1.0E+9 Inexact Rounded 1597db96d56Sopenharmony_cilogbx1511 logb 1E-999999999 -> -1.0E+9 Inexact Rounded 1607db96d56Sopenharmony_ciprecision: 1 1617db96d56Sopenharmony_cilogbx1517 logb 1E-1111 -> -1E+3 Inexact Rounded 1627db96d56Sopenharmony_cilogbx1518 logb 1E-3333 -> -3E+3 Inexact Rounded 1637db96d56Sopenharmony_cilogbx1519 logb 1E-6666 -> -7E+3 Inexact Rounded 1647db96d56Sopenharmony_ciprecision: 8 1657db96d56Sopenharmony_cilogbx1520 logb 1E+999999999 -> 1.0000000E+9 Inexact Rounded 1667db96d56Sopenharmony_cilogbx1521 logb 1E-999999999 -> -1.0000000E+9 Inexact Rounded 1677db96d56Sopenharmony_ciprecision: 9 1687db96d56Sopenharmony_cilogbx1523 logb 1E+999999999 -> 999999999 1697db96d56Sopenharmony_cilogbx1524 logb 1E-999999999 -> -999999999 1707db96d56Sopenharmony_ci 1717db96d56Sopenharmony_ci-- special values 1727db96d56Sopenharmony_ciprecision: 9 1737db96d56Sopenharmony_cilogbx820 logb Infinity -> Infinity 1747db96d56Sopenharmony_cilogbx821 logb -Infinity -> Infinity 1757db96d56Sopenharmony_cilogbx822 logb 0 -> -Infinity Division_by_zero 1767db96d56Sopenharmony_cilogbx823 logb NaN -> NaN 1777db96d56Sopenharmony_cilogbx824 logb sNaN -> NaN Invalid_operation 1787db96d56Sopenharmony_ci-- propagating NaNs 1797db96d56Sopenharmony_cilogbx825 logb sNaN123 -> NaN123 Invalid_operation 1807db96d56Sopenharmony_cilogbx826 logb -sNaN321 -> -NaN321 Invalid_operation 1817db96d56Sopenharmony_cilogbx827 logb NaN456 -> NaN456 1827db96d56Sopenharmony_cilogbx828 logb -NaN654 -> -NaN654 1837db96d56Sopenharmony_cilogbx829 logb NaN1 -> NaN1 1847db96d56Sopenharmony_ci 1857db96d56Sopenharmony_ci-- Null test 1867db96d56Sopenharmony_cilogbx900 logb # -> NaN Invalid_operation 1877db96d56Sopenharmony_ci 1887db96d56Sopenharmony_ci 189