17db96d56Sopenharmony_ci------------------------------------------------------------------------ 27db96d56Sopenharmony_ci-- ddLogB.decTest -- integral 754r adjusted exponent, for decDoubles -- 37db96d56Sopenharmony_ci-- Copyright (c) IBM Corporation, 2005, 2008. 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_ciprecision: 16 237db96d56Sopenharmony_cimaxExponent: 384 247db96d56Sopenharmony_ciminExponent: -383 257db96d56Sopenharmony_ciextended: 1 267db96d56Sopenharmony_ciclamp: 1 277db96d56Sopenharmony_cirounding: half_even 287db96d56Sopenharmony_ci 297db96d56Sopenharmony_ci-- basics 307db96d56Sopenharmony_ciddlogb000 logb 0 -> -Infinity Division_by_zero 317db96d56Sopenharmony_ciddlogb001 logb 1E-398 -> -398 327db96d56Sopenharmony_ciddlogb002 logb 1E-383 -> -383 337db96d56Sopenharmony_ciddlogb003 logb 0.001 -> -3 347db96d56Sopenharmony_ciddlogb004 logb 0.03 -> -2 357db96d56Sopenharmony_ciddlogb005 logb 1 -> 0 367db96d56Sopenharmony_ciddlogb006 logb 2 -> 0 377db96d56Sopenharmony_ciddlogb007 logb 2.5 -> 0 387db96d56Sopenharmony_ciddlogb008 logb 2.500 -> 0 397db96d56Sopenharmony_ciddlogb009 logb 10 -> 1 407db96d56Sopenharmony_ciddlogb010 logb 70 -> 1 417db96d56Sopenharmony_ciddlogb011 logb 100 -> 2 427db96d56Sopenharmony_ciddlogb012 logb 333 -> 2 437db96d56Sopenharmony_ciddlogb013 logb 9E+384 -> 384 447db96d56Sopenharmony_ciddlogb014 logb +Infinity -> Infinity 457db96d56Sopenharmony_ci 467db96d56Sopenharmony_ci-- negatives appear to be treated as positives 477db96d56Sopenharmony_ciddlogb021 logb -0 -> -Infinity Division_by_zero 487db96d56Sopenharmony_ciddlogb022 logb -1E-398 -> -398 497db96d56Sopenharmony_ciddlogb023 logb -9E-383 -> -383 507db96d56Sopenharmony_ciddlogb024 logb -0.001 -> -3 517db96d56Sopenharmony_ciddlogb025 logb -1 -> 0 527db96d56Sopenharmony_ciddlogb026 logb -2 -> 0 537db96d56Sopenharmony_ciddlogb027 logb -10 -> 1 547db96d56Sopenharmony_ciddlogb028 logb -70 -> 1 557db96d56Sopenharmony_ciddlogb029 logb -100 -> 2 567db96d56Sopenharmony_ciddlogb030 logb -9E+384 -> 384 577db96d56Sopenharmony_ciddlogb031 logb -Infinity -> Infinity 587db96d56Sopenharmony_ci 597db96d56Sopenharmony_ci-- zeros 607db96d56Sopenharmony_ciddlogb111 logb 0 -> -Infinity Division_by_zero 617db96d56Sopenharmony_ciddlogb112 logb -0 -> -Infinity Division_by_zero 627db96d56Sopenharmony_ciddlogb113 logb 0E+4 -> -Infinity Division_by_zero 637db96d56Sopenharmony_ciddlogb114 logb -0E+4 -> -Infinity Division_by_zero 647db96d56Sopenharmony_ciddlogb115 logb 0.0000 -> -Infinity Division_by_zero 657db96d56Sopenharmony_ciddlogb116 logb -0.0000 -> -Infinity Division_by_zero 667db96d56Sopenharmony_ciddlogb117 logb 0E-141 -> -Infinity Division_by_zero 677db96d56Sopenharmony_ciddlogb118 logb -0E-141 -> -Infinity Division_by_zero 687db96d56Sopenharmony_ci 697db96d56Sopenharmony_ci-- full coefficients, alternating bits 707db96d56Sopenharmony_ciddlogb121 logb 268268268 -> 8 717db96d56Sopenharmony_ciddlogb122 logb -268268268 -> 8 727db96d56Sopenharmony_ciddlogb123 logb 134134134 -> 8 737db96d56Sopenharmony_ciddlogb124 logb -134134134 -> 8 747db96d56Sopenharmony_ci 757db96d56Sopenharmony_ci-- Nmax, Nmin, Ntiny 767db96d56Sopenharmony_ciddlogb131 logb 9.999999999999999E+384 -> 384 777db96d56Sopenharmony_ciddlogb132 logb 1E-383 -> -383 787db96d56Sopenharmony_ciddlogb133 logb 1.000000000000000E-383 -> -383 797db96d56Sopenharmony_ciddlogb134 logb 1E-398 -> -398 807db96d56Sopenharmony_ci 817db96d56Sopenharmony_ciddlogb135 logb -1E-398 -> -398 827db96d56Sopenharmony_ciddlogb136 logb -1.000000000000000E-383 -> -383 837db96d56Sopenharmony_ciddlogb137 logb -1E-383 -> -383 847db96d56Sopenharmony_ciddlogb138 logb -9.999999999999999E+384 -> 384 857db96d56Sopenharmony_ci 867db96d56Sopenharmony_ci-- ones 877db96d56Sopenharmony_ciddlogb0061 logb 1 -> 0 887db96d56Sopenharmony_ciddlogb0062 logb 1.0 -> 0 897db96d56Sopenharmony_ciddlogb0063 logb 1.000000000000000 -> 0 907db96d56Sopenharmony_ci 917db96d56Sopenharmony_ci-- notable cases -- exact powers of 10 927db96d56Sopenharmony_ciddlogb1100 logb 1 -> 0 937db96d56Sopenharmony_ciddlogb1101 logb 10 -> 1 947db96d56Sopenharmony_ciddlogb1102 logb 100 -> 2 957db96d56Sopenharmony_ciddlogb1103 logb 1000 -> 3 967db96d56Sopenharmony_ciddlogb1104 logb 10000 -> 4 977db96d56Sopenharmony_ciddlogb1105 logb 100000 -> 5 987db96d56Sopenharmony_ciddlogb1106 logb 1000000 -> 6 997db96d56Sopenharmony_ciddlogb1107 logb 10000000 -> 7 1007db96d56Sopenharmony_ciddlogb1108 logb 100000000 -> 8 1017db96d56Sopenharmony_ciddlogb1109 logb 1000000000 -> 9 1027db96d56Sopenharmony_ciddlogb1110 logb 10000000000 -> 10 1037db96d56Sopenharmony_ciddlogb1111 logb 100000000000 -> 11 1047db96d56Sopenharmony_ciddlogb1112 logb 1000000000000 -> 12 1057db96d56Sopenharmony_ciddlogb1113 logb 0.00000000001 -> -11 1067db96d56Sopenharmony_ciddlogb1114 logb 0.0000000001 -> -10 1077db96d56Sopenharmony_ciddlogb1115 logb 0.000000001 -> -9 1087db96d56Sopenharmony_ciddlogb1116 logb 0.00000001 -> -8 1097db96d56Sopenharmony_ciddlogb1117 logb 0.0000001 -> -7 1107db96d56Sopenharmony_ciddlogb1118 logb 0.000001 -> -6 1117db96d56Sopenharmony_ciddlogb1119 logb 0.00001 -> -5 1127db96d56Sopenharmony_ciddlogb1120 logb 0.0001 -> -4 1137db96d56Sopenharmony_ciddlogb1121 logb 0.001 -> -3 1147db96d56Sopenharmony_ciddlogb1122 logb 0.01 -> -2 1157db96d56Sopenharmony_ciddlogb1123 logb 0.1 -> -1 1167db96d56Sopenharmony_ciddlogb1124 logb 1E-99 -> -99 1177db96d56Sopenharmony_ciddlogb1125 logb 1E-100 -> -100 1187db96d56Sopenharmony_ciddlogb1127 logb 1E-299 -> -299 1197db96d56Sopenharmony_ciddlogb1126 logb 1E-383 -> -383 1207db96d56Sopenharmony_ci 1217db96d56Sopenharmony_ci-- suggestions from Ilan Nehama 1227db96d56Sopenharmony_ciddlogb1400 logb 10E-3 -> -2 1237db96d56Sopenharmony_ciddlogb1401 logb 10E-2 -> -1 1247db96d56Sopenharmony_ciddlogb1402 logb 100E-2 -> 0 1257db96d56Sopenharmony_ciddlogb1403 logb 1000E-2 -> 1 1267db96d56Sopenharmony_ciddlogb1404 logb 10000E-2 -> 2 1277db96d56Sopenharmony_ciddlogb1405 logb 10E-1 -> 0 1287db96d56Sopenharmony_ciddlogb1406 logb 100E-1 -> 1 1297db96d56Sopenharmony_ciddlogb1407 logb 1000E-1 -> 2 1307db96d56Sopenharmony_ciddlogb1408 logb 10000E-1 -> 3 1317db96d56Sopenharmony_ciddlogb1409 logb 10E0 -> 1 1327db96d56Sopenharmony_ciddlogb1410 logb 100E0 -> 2 1337db96d56Sopenharmony_ciddlogb1411 logb 1000E0 -> 3 1347db96d56Sopenharmony_ciddlogb1412 logb 10000E0 -> 4 1357db96d56Sopenharmony_ciddlogb1413 logb 10E1 -> 2 1367db96d56Sopenharmony_ciddlogb1414 logb 100E1 -> 3 1377db96d56Sopenharmony_ciddlogb1415 logb 1000E1 -> 4 1387db96d56Sopenharmony_ciddlogb1416 logb 10000E1 -> 5 1397db96d56Sopenharmony_ciddlogb1417 logb 10E2 -> 3 1407db96d56Sopenharmony_ciddlogb1418 logb 100E2 -> 4 1417db96d56Sopenharmony_ciddlogb1419 logb 1000E2 -> 5 1427db96d56Sopenharmony_ciddlogb1420 logb 10000E2 -> 6 1437db96d56Sopenharmony_ci 1447db96d56Sopenharmony_ci-- special values 1457db96d56Sopenharmony_ciddlogb820 logb Infinity -> Infinity 1467db96d56Sopenharmony_ciddlogb821 logb 0 -> -Infinity Division_by_zero 1477db96d56Sopenharmony_ciddlogb822 logb NaN -> NaN 1487db96d56Sopenharmony_ciddlogb823 logb sNaN -> NaN Invalid_operation 1497db96d56Sopenharmony_ci-- propagating NaNs 1507db96d56Sopenharmony_ciddlogb824 logb sNaN123 -> NaN123 Invalid_operation 1517db96d56Sopenharmony_ciddlogb825 logb -sNaN321 -> -NaN321 Invalid_operation 1527db96d56Sopenharmony_ciddlogb826 logb NaN456 -> NaN456 1537db96d56Sopenharmony_ciddlogb827 logb -NaN654 -> -NaN654 1547db96d56Sopenharmony_ciddlogb828 logb NaN1 -> NaN1 1557db96d56Sopenharmony_ci 1567db96d56Sopenharmony_ci-- Null test 1577db96d56Sopenharmony_ciddlogb900 logb # -> NaN Invalid_operation 1587db96d56Sopenharmony_ci 1597db96d56Sopenharmony_ci 160