1------------------------------------------------------------------------ 2-- dqLogB.decTest -- integral 754r adjusted exponent, for decQuads -- 3-- Copyright (c) IBM Corporation, 2005, 2008. All rights reserved. -- 4------------------------------------------------------------------------ 5-- Please see the document "General Decimal Arithmetic Testcases" -- 6-- at http://www2.hursley.ibm.com/decimal for the description of -- 7-- these testcases. -- 8-- -- 9-- These testcases are experimental ('beta' versions), and they -- 10-- may contain errors. They are offered on an as-is basis. In -- 11-- particular, achieving the same results as the tests here is not -- 12-- a guarantee that an implementation complies with any Standard -- 13-- or specification. The tests are not exhaustive. -- 14-- -- 15-- Please send comments, suggestions, and corrections to the author: -- 16-- Mike Cowlishaw, IBM Fellow -- 17-- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK -- 18-- mfc@uk.ibm.com -- 19------------------------------------------------------------------------ 20version: 2.59 21 22extended: 1 23clamp: 1 24precision: 34 25maxExponent: 6144 26minExponent: -6143 27rounding: half_even 28 29-- basics 30dqlogb000 logb 0 -> -Infinity Division_by_zero 31dqlogb001 logb 1E-6176 -> -6176 32dqlogb002 logb 1E-6143 -> -6143 33dqlogb003 logb 0.001 -> -3 34dqlogb004 logb 0.03 -> -2 35dqlogb005 logb 1 -> 0 36dqlogb006 logb 2 -> 0 37dqlogb007 logb 2.5 -> 0 38dqlogb008 logb 2.50 -> 0 39dqlogb009 logb 2.500 -> 0 40dqlogb010 logb 10 -> 1 41dqlogb011 logb 70 -> 1 42dqlogb012 logb 100 -> 2 43dqlogb013 logb 250 -> 2 44dqlogb014 logb 9E+6144 -> 6144 45dqlogb015 logb +Infinity -> Infinity 46 47-- negatives appear to be treated as positives 48dqlogb021 logb -0 -> -Infinity Division_by_zero 49dqlogb022 logb -1E-6176 -> -6176 50dqlogb023 logb -9E-6143 -> -6143 51dqlogb024 logb -0.001 -> -3 52dqlogb025 logb -1 -> 0 53dqlogb026 logb -2 -> 0 54dqlogb027 logb -10 -> 1 55dqlogb028 logb -70 -> 1 56dqlogb029 logb -100 -> 2 57dqlogb030 logb -9E+6144 -> 6144 58dqlogb031 logb -Infinity -> Infinity 59 60-- zeros 61dqlogb111 logb 0 -> -Infinity Division_by_zero 62dqlogb112 logb -0 -> -Infinity Division_by_zero 63dqlogb113 logb 0E+4 -> -Infinity Division_by_zero 64dqlogb114 logb -0E+4 -> -Infinity Division_by_zero 65dqlogb115 logb 0.0000 -> -Infinity Division_by_zero 66dqlogb116 logb -0.0000 -> -Infinity Division_by_zero 67dqlogb117 logb 0E-141 -> -Infinity Division_by_zero 68dqlogb118 logb -0E-141 -> -Infinity Division_by_zero 69 70-- full coefficients, alternating bits 71dqlogb121 logb 268268268 -> 8 72dqlogb122 logb -268268268 -> 8 73dqlogb123 logb 134134134 -> 8 74dqlogb124 logb -134134134 -> 8 75 76-- Nmax, Nmin, Ntiny 77dqlogb131 logb 9.999999999999999999999999999999999E+6144 -> 6144 78dqlogb132 logb 1E-6143 -> -6143 79dqlogb133 logb 1.000000000000000000000000000000000E-6143 -> -6143 80dqlogb134 logb 1E-6176 -> -6176 81 82dqlogb135 logb -1E-6176 -> -6176 83dqlogb136 logb -1.000000000000000000000000000000000E-6143 -> -6143 84dqlogb137 logb -1E-6143 -> -6143 85dqlogb1614 logb -9.999999999999999999999999999999999E+6144 -> 6144 86 87-- ones 88dqlogb0061 logb 1 -> 0 89dqlogb0062 logb 1.0 -> 0 90dqlogb0063 logb 1.000000000000000 -> 0 91 92-- notable cases -- exact powers of 10 93dqlogb1100 logb 1 -> 0 94dqlogb1101 logb 10 -> 1 95dqlogb1102 logb 100 -> 2 96dqlogb1103 logb 1000 -> 3 97dqlogb1104 logb 10000 -> 4 98dqlogb1105 logb 100000 -> 5 99dqlogb1106 logb 1000000 -> 6 100dqlogb1107 logb 10000000 -> 7 101dqlogb1108 logb 100000000 -> 8 102dqlogb1109 logb 1000000000 -> 9 103dqlogb1110 logb 10000000000 -> 10 104dqlogb1111 logb 100000000000 -> 11 105dqlogb1112 logb 1000000000000 -> 12 106dqlogb1113 logb 0.00000000001 -> -11 107dqlogb1114 logb 0.0000000001 -> -10 108dqlogb1115 logb 0.000000001 -> -9 109dqlogb1116 logb 0.00000001 -> -8 110dqlogb1117 logb 0.0000001 -> -7 111dqlogb1118 logb 0.000001 -> -6 112dqlogb1119 logb 0.00001 -> -5 113dqlogb1120 logb 0.0001 -> -4 114dqlogb1121 logb 0.001 -> -3 115dqlogb1122 logb 0.01 -> -2 116dqlogb1123 logb 0.1 -> -1 117dqlogb1124 logb 1E-99 -> -99 118dqlogb1125 logb 1E-100 -> -100 119dqlogb1127 logb 1E-299 -> -299 120dqlogb1126 logb 1E-6143 -> -6143 121 122-- suggestions from Ilan Nehama 123dqlogb1400 logb 10E-3 -> -2 124dqlogb1401 logb 10E-2 -> -1 125dqlogb1402 logb 100E-2 -> 0 126dqlogb1403 logb 1000E-2 -> 1 127dqlogb1404 logb 10000E-2 -> 2 128dqlogb1405 logb 10E-1 -> 0 129dqlogb1406 logb 100E-1 -> 1 130dqlogb1407 logb 1000E-1 -> 2 131dqlogb1408 logb 10000E-1 -> 3 132dqlogb1409 logb 10E0 -> 1 133dqlogb1410 logb 100E0 -> 2 134dqlogb1411 logb 1000E0 -> 3 135dqlogb1412 logb 10000E0 -> 4 136dqlogb1413 logb 10E1 -> 2 137dqlogb1414 logb 100E1 -> 3 138dqlogb1415 logb 1000E1 -> 4 139dqlogb1416 logb 10000E1 -> 5 140dqlogb1417 logb 10E2 -> 3 141dqlogb1418 logb 100E2 -> 4 142dqlogb1419 logb 1000E2 -> 5 143dqlogb1420 logb 10000E2 -> 6 144 145-- special values 146dqlogb820 logb Infinity -> Infinity 147dqlogb821 logb 0 -> -Infinity Division_by_zero 148dqlogb822 logb NaN -> NaN 149dqlogb823 logb sNaN -> NaN Invalid_operation 150-- propagating NaNs 151dqlogb824 logb sNaN123 -> NaN123 Invalid_operation 152dqlogb825 logb -sNaN321 -> -NaN321 Invalid_operation 153dqlogb826 logb NaN456 -> NaN456 154dqlogb827 logb -NaN654 -> -NaN654 155dqlogb828 logb NaN1 -> NaN1 156 157-- Null test 158dqlogb900 logb # -> NaN Invalid_operation 159 160 161