diff options
Diffstat (limited to 'lib/python2.7/test/decimaltestdata/logb.decTest')
| -rw-r--r-- | lib/python2.7/test/decimaltestdata/logb.decTest | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/lib/python2.7/test/decimaltestdata/logb.decTest b/lib/python2.7/test/decimaltestdata/logb.decTest new file mode 100644 index 0000000..8b79006 --- /dev/null +++ b/lib/python2.7/test/decimaltestdata/logb.decTest @@ -0,0 +1,188 @@ +------------------------------------------------------------------------ +-- logb.decTest -- return integral adjusted exponent as per 754r -- +-- Copyright (c) IBM Corporation, 2005, 2009. All rights reserved. -- +------------------------------------------------------------------------ +-- Please see the document "General Decimal Arithmetic Testcases" -- +-- at http://www2.hursley.ibm.com/decimal for the description of -- +-- these testcases. -- +-- -- +-- These testcases are experimental ('beta' versions), and they -- +-- may contain errors. They are offered on an as-is basis. In -- +-- particular, achieving the same results as the tests here is not -- +-- a guarantee that an implementation complies with any Standard -- +-- or specification. The tests are not exhaustive. -- +-- -- +-- Please send comments, suggestions, and corrections to the author: -- +-- Mike Cowlishaw, IBM Fellow -- +-- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK -- +-- mfc@uk.ibm.com -- +------------------------------------------------------------------------ +version: 2.59 + +-- This emphasises the testing of notable cases, as they will often +-- have unusual paths (especially the 10**n results). + +extended: 1 +rounding: half_even +maxExponent: 999 +minexponent: -999 + +-- basics & examples +precision: 9 +logbx001 logb 0 -> -Infinity Division_by_zero +logbx002 logb 1E-999 -> -999 +logbx003 logb 9E-999 -> -999 +logbx004 logb 0.001 -> -3 +logbx005 logb 0.03 -> -2 +logbx006 logb 1 -> 0 +logbx007 logb 2 -> 0 +logbx008 logb 2.5 -> 0 +logbx009 logb 2.50 -> 0 +logbx010 logb 10 -> 1 +logbx011 logb 70 -> 1 +logbx012 logb 100 -> 2 +logbx013 logb 250 -> 2 +logbx014 logb +Infinity -> Infinity + +-- negatives are treated as positives +logbx021 logb -0 -> -Infinity Division_by_zero +logbx022 logb -1E-999 -> -999 +logbx023 logb -9E-999 -> -999 +logbx024 logb -0.001 -> -3 +logbx025 logb -1 -> 0 +logbx026 logb -2 -> 0 +logbx027 logb -10 -> 1 +logbx028 logb -70 -> 1 +logbx029 logb -100 -> 2 +logbx030 logb -100000000 -> 8 +logbx031 logb -Infinity -> Infinity + +-- zeros +logbx111 logb 0 -> -Infinity Division_by_zero +logbx112 logb -0 -> -Infinity Division_by_zero +logbx113 logb 0E+4 -> -Infinity Division_by_zero +logbx114 logb -0E+4 -> -Infinity Division_by_zero +logbx115 logb 0.0000 -> -Infinity Division_by_zero +logbx116 logb -0.0000 -> -Infinity Division_by_zero +logbx117 logb 0E-141 -> -Infinity Division_by_zero +logbx118 logb -0E-141 -> -Infinity Division_by_zero + +-- full coefficients, alternating bits +logbx121 logb 268268268 -> 8 +logbx122 logb -268268268 -> 8 +logbx123 logb 134134134 -> 8 +logbx124 logb -134134134 -> 8 + +-- Nmax, Nmin, Ntiny +logbx131 logb 9.99999999E+999 -> 999 +logbx132 logb 1E-999 -> -999 +logbx133 logb 1.00000000E-999 -> -999 +logbx134 logb 1E-1007 -> -1007 + +logbx135 logb -1E-1007 -> -1007 +logbx136 logb -1.00000000E-999 -> -999 +logbx137 logb -1E-999 -> -999 +logbx138 logb -9.99999999E+999 -> 999 + +-- ones +logbx0061 logb 1 -> 0 +logbx0062 logb 1.0 -> 0 +logbx0063 logb 1.000000000000000 -> 0 +logbx0064 logb 1.000000000000000000 -> 0 + +-- notable cases -- exact powers of 10 +logbx1100 logb 1 -> 0 +logbx1101 logb 10 -> 1 +logbx1102 logb 100 -> 2 +logbx1103 logb 1000 -> 3 +logbx1104 logb 10000 -> 4 +logbx1105 logb 100000 -> 5 +logbx1106 logb 1000000 -> 6 +logbx1107 logb 10000000 -> 7 +logbx1108 logb 100000000 -> 8 +logbx1109 logb 1000000000 -> 9 +logbx1110 logb 10000000000 -> 10 +logbx1111 logb 100000000000 -> 11 +logbx1112 logb 1000000000000 -> 12 +logbx1113 logb 0.00000000001 -> -11 +logbx1114 logb 0.0000000001 -> -10 +logbx1115 logb 0.000000001 -> -9 +logbx1116 logb 0.00000001 -> -8 +logbx1117 logb 0.0000001 -> -7 +logbx1118 logb 0.000001 -> -6 +logbx1119 logb 0.00001 -> -5 +logbx1120 logb 0.0001 -> -4 +logbx1121 logb 0.001 -> -3 +logbx1122 logb 0.01 -> -2 +logbx1123 logb 0.1 -> -1 +logbx1124 logb 1E-99 -> -99 +logbx1125 logb 1E-100 -> -100 +logbx1126 logb 1E-383 -> -383 +logbx1127 logb 1E-999 -> -999 + +-- suggestions from Ilan Nehama +logbx1400 logb 10E-3 -> -2 +logbx1401 logb 10E-2 -> -1 +logbx1402 logb 100E-2 -> 0 +logbx1403 logb 1000E-2 -> 1 +logbx1404 logb 10000E-2 -> 2 +logbx1405 logb 10E-1 -> 0 +logbx1406 logb 100E-1 -> 1 +logbx1407 logb 1000E-1 -> 2 +logbx1408 logb 10000E-1 -> 3 +logbx1409 logb 10E0 -> 1 +logbx1410 logb 100E0 -> 2 +logbx1411 logb 1000E0 -> 3 +logbx1412 logb 10000E0 -> 4 +logbx1413 logb 10E1 -> 2 +logbx1414 logb 100E1 -> 3 +logbx1415 logb 1000E1 -> 4 +logbx1416 logb 10000E1 -> 5 +logbx1417 logb 10E2 -> 3 +logbx1418 logb 100E2 -> 4 +logbx1419 logb 1000E2 -> 5 +logbx1420 logb 10000E2 -> 6 + +-- inexacts +precision: 2 +logbx1500 logb 10000E2 -> 6 +logbx1501 logb 1E+99 -> 99 +logbx1502 logb 1E-99 -> -99 +logbx1503 logb 1E+100 -> 1.0E+2 Rounded +logbx1504 logb 1E+999 -> 1.0E+3 Inexact Rounded +logbx1505 logb 1E-100 -> -1.0E+2 Rounded +logbx1506 logb 1E-999 -> -1.0E+3 Inexact Rounded +logbx1507 logb 1E-1111 -> -1.1E+3 Inexact Rounded +logbx1508 logb 1E-3333 -> -3.3E+3 Inexact Rounded +logbx1509 logb 1E-6666 -> -6.7E+3 Inexact Rounded +logbx1510 logb 1E+999999999 -> 1.0E+9 Inexact Rounded +logbx1511 logb 1E-999999999 -> -1.0E+9 Inexact Rounded +precision: 1 +logbx1517 logb 1E-1111 -> -1E+3 Inexact Rounded +logbx1518 logb 1E-3333 -> -3E+3 Inexact Rounded +logbx1519 logb 1E-6666 -> -7E+3 Inexact Rounded +precision: 8 +logbx1520 logb 1E+999999999 -> 1.0000000E+9 Inexact Rounded +logbx1521 logb 1E-999999999 -> -1.0000000E+9 Inexact Rounded +precision: 9 +logbx1523 logb 1E+999999999 -> 999999999 +logbx1524 logb 1E-999999999 -> -999999999 + +-- special values +precision: 9 +logbx820 logb Infinity -> Infinity +logbx821 logb -Infinity -> Infinity +logbx822 logb 0 -> -Infinity Division_by_zero +logbx823 logb NaN -> NaN +logbx824 logb sNaN -> NaN Invalid_operation +-- propagating NaNs +logbx825 logb sNaN123 -> NaN123 Invalid_operation +logbx826 logb -sNaN321 -> -NaN321 Invalid_operation +logbx827 logb NaN456 -> NaN456 +logbx828 logb -NaN654 -> -NaN654 +logbx829 logb NaN1 -> NaN1 + +-- Null test +logbx900 logb # -> NaN Invalid_operation + + |