Merged revisions 58095-58132,58136-58148,58151-58197 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r58096 | brett.cannon | 2007-09-10 23:38:27 +0200 (Mon, 10 Sep 2007) | 4 lines

  Fix a possible segfault from recursing too deep to get the repr of a list.

  Closes issue #1096.
........
  r58097 | bill.janssen | 2007-09-10 23:51:02 +0200 (Mon, 10 Sep 2007) | 33 lines

  More work on SSL support.

  * Much expanded test suite:

    All protocols tested against all other protocols.
    All protocols tested with all certificate options.
    Tests for bad key and bad cert.
    Test of STARTTLS functionality.
    Test of RAND_* functions.

  * Fixes for threading/malloc bug.

  * Issue 1065 fixed:

    sslsocket class renamed to SSLSocket.
    sslerror class renamed to SSLError.
    Function "wrap_socket" now used to wrap an existing socket.

  * Issue 1583946 finally fixed:

    Support for subjectAltName added.
    Subject name now returned as proper DN list of RDNs.

  * SSLError exported from socket as "sslerror".

  * RAND_* functions properly exported from ssl.py.

  * Documentation improved:

    Example of how to create a self-signed certificate.
    Better indexing.
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  r58098 | guido.van.rossum | 2007-09-11 00:02:25 +0200 (Tue, 11 Sep 2007) | 9 lines

  Patch # 1140 (my code, approved by Effbot).

  Make sure the type of the return value of re.sub(x, y, z) is the type
  of y+x (i.e. unicode if either is unicode, str if they are both str)
  even if there are no substitutions or if x==z (which triggered various
  special cases in join_list()).

  Could be backported to 2.5; no need to port to 3.0.
........
  r58099 | guido.van.rossum | 2007-09-11 00:36:02 +0200 (Tue, 11 Sep 2007) | 8 lines

  Patch # 1026 by Benjamin Aranguren (with Alex Martelli):
  Backport abc.py and isinstance/issubclass overloading to 2.6.

  I had to backport test_typechecks.py myself, and make one small change
  to abc.py to avoid duplicate work when x.__class__ and type(x) are the
  same.
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  r58100 | bill.janssen | 2007-09-11 01:41:24 +0200 (Tue, 11 Sep 2007) | 3 lines

  A better way of finding an open port to test with.
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  r58101 | bill.janssen | 2007-09-11 03:09:19 +0200 (Tue, 11 Sep 2007) | 4 lines

  Make sure test_ssl doesn't reference the ssl module in a
  context where it can't be imported.
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  r58102 | bill.janssen | 2007-09-11 04:42:07 +0200 (Tue, 11 Sep 2007) | 3 lines

  Fix some documentation bugs.
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  r58103 | nick.coghlan | 2007-09-11 16:01:18 +0200 (Tue, 11 Sep 2007) | 1 line

  Always use the -E flag when spawning subprocesses in test_cmd_line (Issue 1056)
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  r58106 | thomas.heller | 2007-09-11 21:17:48 +0200 (Tue, 11 Sep 2007) | 3 lines

  Disable some tests that fail on the 'ppc Debian unstable' buildbot to
  find out if they cause the segfault on the 'alpha Debian' machine.
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  r58108 | brett.cannon | 2007-09-11 23:02:28 +0200 (Tue, 11 Sep 2007) | 6 lines

  Generators had their throw() method allowing string exceptions.  That's a
  no-no.

  Fixes issue #1147.  Need to fix 2.5 to raise a proper warning if a string
  exception is passed in.
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  r58112 | georg.brandl | 2007-09-12 20:03:51 +0200 (Wed, 12 Sep 2007) | 3 lines

  New documentation page for the bdb module.
  (This doesn't need to be merged to Py3k.)
........
  r58114 | georg.brandl | 2007-09-12 20:05:57 +0200 (Wed, 12 Sep 2007) | 2 lines

  Bug #1152: use non-deprecated name in example.
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  r58115 | georg.brandl | 2007-09-12 20:08:33 +0200 (Wed, 12 Sep 2007) | 2 lines

  Fix #1122: wrong return type documented for various _Size() functions.
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  r58117 | georg.brandl | 2007-09-12 20:10:56 +0200 (Wed, 12 Sep 2007) | 2 lines

  Fix #1139: PyFile_Encoding really is PyFile_SetEncoding.
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  r58119 | georg.brandl | 2007-09-12 20:29:18 +0200 (Wed, 12 Sep 2007) | 2 lines

  bug #1154: release memory allocated by "es" PyArg_ParseTuple format specifier.
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  r58121 | bill.janssen | 2007-09-12 20:52:05 +0200 (Wed, 12 Sep 2007) | 1 line

  root certificate for https://svn.python.org/, used in test_ssl
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  r58122 | georg.brandl | 2007-09-12 21:00:07 +0200 (Wed, 12 Sep 2007) | 3 lines

  Bug #1153: repr.repr() now doesn't require set and dictionary items
  to be orderable to properly represent them.
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  r58125 | georg.brandl | 2007-09-12 21:29:28 +0200 (Wed, 12 Sep 2007) | 4 lines

  #1120: put explicit version in the shebang lines of pydoc, idle
  and smtpd.py scripts that are installed by setup.py. That way, they
  work when only "make altinstall" is used.
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  r58139 | mark.summerfield | 2007-09-13 16:54:30 +0200 (Thu, 13 Sep 2007) | 9 lines

  Replaced variable o with obj in operator.rst because o is easy to
  confuse.

  Added a note about Python 3's collections.Mapping etc., above section
  that describes isMappingType() etc.

  Added xrefs between os, os.path, fileinput, and open().
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  r58143 | facundo.batista | 2007-09-13 20:13:15 +0200 (Thu, 13 Sep 2007) | 7 lines


  Merged the decimal-branch (revisions 54886 to 58140). Decimal is now
  fully updated to the latests Decimal Specification (v1.66) and the
  latests test cases (v2.56).

  Thanks to Mark Dickinson for all his help during this process.
........
  r58145 | facundo.batista | 2007-09-13 20:42:09 +0200 (Thu, 13 Sep 2007) | 7 lines


  Put the parameter watchexp back in (changed watchexp from an int
  to a bool).  Also second argument to watchexp is now converted
  to Decimal, just as with all the other two-argument operations.

  Thanks Mark Dickinson.
........
  r58147 | andrew.kuchling | 2007-09-14 00:49:34 +0200 (Fri, 14 Sep 2007) | 1 line

  Add various items
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  r58148 | andrew.kuchling | 2007-09-14 00:50:10 +0200 (Fri, 14 Sep 2007) | 1 line

  Make target unique
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  r58154 | facundo.batista | 2007-09-14 20:58:34 +0200 (Fri, 14 Sep 2007) | 3 lines


  Included the new functions, and new descriptions.
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  r58155 | thomas.heller | 2007-09-14 21:40:35 +0200 (Fri, 14 Sep 2007) | 2 lines

  ctypes.util.find_library uses dump(1) instead of objdump(1) on Solaris.
  Fixes issue #1777530; will backport to release25-maint.
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  r58159 | facundo.batista | 2007-09-14 23:29:52 +0200 (Fri, 14 Sep 2007) | 3 lines


  Some additions (examples and a bit on the tutorial).
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  r58160 | georg.brandl | 2007-09-15 18:53:36 +0200 (Sat, 15 Sep 2007) | 2 lines

  Remove bdb from the "undocumented modules" list.
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  r58164 | bill.janssen | 2007-09-17 00:06:00 +0200 (Mon, 17 Sep 2007) | 15 lines

  Add support for asyncore server-side SSL support.  This requires
  adding the 'makefile' method to ssl.SSLSocket, and importing the
  requisite fakefile class from socket.py, and making the appropriate
  changes to it to make it use the SSL connection.

  Added sample HTTPS server to test_ssl.py, and test that uses it.

  Change SSL tests to use https://svn.python.org/, instead of
  www.sf.net and pop.gmail.com.

  Added utility function to ssl module, get_server_certificate,
  to wrap up the several things to be done to pull a certificate
  from a remote server.
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  r58173 | bill.janssen | 2007-09-17 01:16:46 +0200 (Mon, 17 Sep 2007) | 1 line

  use binary mode when reading files for testAsyncore to make Windows happy
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  r58175 | raymond.hettinger | 2007-09-17 02:55:00 +0200 (Mon, 17 Sep 2007) | 7 lines

  Sync-up named tuples with the latest version of the ASPN recipe.
  Allows optional commas in the field-name spec (help when named tuples are used in conjuction with sql queries).
  Adds the __fields__ attribute for introspection and to support conversion to dictionary form.
  Adds a  __replace__() method similar to str.replace() but using a named field as a target.
  Clean-up spelling and presentation in doc-strings.
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  r58176 | brett.cannon | 2007-09-17 05:28:34 +0200 (Mon, 17 Sep 2007) | 5 lines

  Add a bunch of GIL release/acquire points in tp_print implementations and for
  PyObject_Print().

  Closes issue #1164.
........
  r58177 | sean.reifschneider | 2007-09-17 07:45:04 +0200 (Mon, 17 Sep 2007) | 2 lines

  issue1597011: Fix for bz2 module corner-case error due to error checking bug.
........
  r58180 | facundo.batista | 2007-09-17 18:26:50 +0200 (Mon, 17 Sep 2007) | 3 lines


  Decimal is updated, :)
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  r58181 | facundo.batista | 2007-09-17 19:30:13 +0200 (Mon, 17 Sep 2007) | 5 lines


  The methods always return Decimal classes, even if they're
  executed through a subclass (thanks Mark Dickinson).
  Added a bit of testing for this.
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  r58183 | sean.reifschneider | 2007-09-17 22:53:21 +0200 (Mon, 17 Sep 2007) | 2 lines

  issue1082: Fixing platform and system for Vista.
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  r58185 | andrew.kuchling | 2007-09-18 03:36:16 +0200 (Tue, 18 Sep 2007) | 1 line

  Add item; sort properly
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  r58186 | raymond.hettinger | 2007-09-18 05:33:19 +0200 (Tue, 18 Sep 2007) | 1 line

  Handle corner cased on 0-tuples and 1-tuples.  Add verbose option so people can see how it works.
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  r58192 | georg.brandl | 2007-09-18 09:24:40 +0200 (Tue, 18 Sep 2007) | 2 lines

  A bit of reordering, also show more subheadings in the lang ref index.
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  r58193 | facundo.batista | 2007-09-18 18:53:18 +0200 (Tue, 18 Sep 2007) | 4 lines


  Speed up of the various division operations (remainder, divide,
  divideint and divmod). Thanks Mark Dickinson.
........
  r58197 | raymond.hettinger | 2007-09-19 00:18:02 +0200 (Wed, 19 Sep 2007) | 1 line

  Cleanup docs for NamedTuple.
........
diff --git a/Lib/test/decimaltestdata/shift.decTest b/Lib/test/decimaltestdata/shift.decTest
new file mode 100644
index 0000000..c2a40cc
--- /dev/null
+++ b/Lib/test/decimaltestdata/shift.decTest
@@ -0,0 +1,250 @@
+------------------------------------------------------------------------

+-- shift.decTest -- shift coefficient left or right                   --

+-- Copyright (c) IBM Corporation, 1981, 2007.  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: 2.56

+

+extended:    1

+precision:   9

+rounding:    half_up

+maxExponent: 999

+minExponent: -999

+

+-- Sanity check

+shix001 shift          0    0  ->  0

+shix002 shift          0    2  ->  0

+shix003 shift          1    2  ->  100

+shix004 shift          1    8  ->  100000000

+shix005 shift          1    9  ->  0

+shix006 shift          1   -1  ->  0

+shix007 shift  123456789   -1  ->  12345678

+shix008 shift  123456789   -8  ->  1

+shix009 shift  123456789   -9  ->  0

+shix010 shift          0   -2  ->  0

+

+-- rhs must be an integer

+shix011 shift        1    1.5    -> NaN Invalid_operation

+shix012 shift        1    1.0    -> NaN Invalid_operation

+shix013 shift        1    0.1    -> NaN Invalid_operation

+shix014 shift        1    0.0    -> NaN Invalid_operation

+shix015 shift        1    1E+1   -> NaN Invalid_operation

+shix016 shift        1    1E+99  -> NaN Invalid_operation

+shix017 shift        1    Inf    -> NaN Invalid_operation

+shix018 shift        1    -Inf   -> NaN Invalid_operation

+-- and |rhs| <= precision

+shix020 shift        1    -1000  -> NaN Invalid_operation

+shix021 shift        1    -10    -> NaN Invalid_operation

+shix022 shift        1     10    -> NaN Invalid_operation

+shix023 shift        1     1000  -> NaN Invalid_operation

+

+-- full shifting pattern

+shix030 shift  123456789          -9   -> 0

+shix031 shift  123456789          -8   -> 1

+shix032 shift  123456789          -7   -> 12

+shix033 shift  123456789          -6   -> 123

+shix034 shift  123456789          -5   -> 1234

+shix035 shift  123456789          -4   -> 12345

+shix036 shift  123456789          -3   -> 123456

+shix037 shift  123456789          -2   -> 1234567

+shix038 shift  123456789          -1   -> 12345678

+shix039 shift  123456789          -0   -> 123456789

+shix040 shift  123456789          +0   -> 123456789

+shix041 shift  123456789          +1   -> 234567890

+shix042 shift  123456789          +2   -> 345678900

+shix043 shift  123456789          +3   -> 456789000

+shix044 shift  123456789          +4   -> 567890000

+shix045 shift  123456789          +5   -> 678900000

+shix046 shift  123456789          +6   -> 789000000

+shix047 shift  123456789          +7   -> 890000000

+shix048 shift  123456789          +8   -> 900000000

+shix049 shift  123456789          +9   -> 0

+

+-- from examples

+shix051 shift 34        8   ->  '400000000'

+shix052 shift 12        9   ->  '0'

+shix053 shift 123456789 -2  ->  '1234567'

+shix054 shift 123456789 0   ->  '123456789'

+shix055 shift 123456789 +2  ->  '345678900'

+

+-- zeros

+shix060 shift  0E-10              +9   ->   0E-10

+shix061 shift  0E-10              -9   ->   0E-10

+shix062 shift  0.000              +9   ->   0.000

+shix063 shift  0.000              -9   ->   0.000

+shix064 shift  0E+10              +9   ->   0E+10

+shix065 shift  0E+10              -9   ->   0E+10

+shix066 shift -0E-10              +9   ->  -0E-10

+shix067 shift -0E-10              -9   ->  -0E-10

+shix068 shift -0.000              +9   ->  -0.000

+shix069 shift -0.000              -9   ->  -0.000

+shix070 shift -0E+10              +9   ->  -0E+10

+shix071 shift -0E+10              -9   ->  -0E+10

+

+-- Nmax, Nmin, Ntiny

+shix141 shift  9.99999999E+999     -1  -> 9.9999999E+998

+shix142 shift  9.99999999E+999     -8  -> 9E+991

+shix143 shift  9.99999999E+999      1  -> 9.99999990E+999

+shix144 shift  9.99999999E+999      8  -> 9.00000000E+999

+shix145 shift  1E-999              -1  -> 0E-999

+shix146 shift  1E-999              -8  -> 0E-999

+shix147 shift  1E-999               1  -> 1.0E-998

+shix148 shift  1E-999               8  -> 1.00000000E-991

+shix151 shift  1.00000000E-999     -1  -> 1.0000000E-1000

+shix152 shift  1.00000000E-999     -8  -> 1E-1007

+shix153 shift  1.00000000E-999      1  -> 0E-1007

+shix154 shift  1.00000000E-999      8  -> 0E-1007

+shix155 shift  9.00000000E-999     -1  -> 9.0000000E-1000

+shix156 shift  9.00000000E-999     -8  -> 9E-1007

+shix157 shift  9.00000000E-999      1  -> 0E-1007

+shix158 shift  9.00000000E-999      8  -> 0E-1007

+shix160 shift  1E-1007             -1  -> 0E-1007

+shix161 shift  1E-1007             -8  -> 0E-1007

+shix162 shift  1E-1007              1  -> 1.0E-1006

+shix163 shift  1E-1007              8  -> 1.00000000E-999

+--  negatives

+shix171 shift -9.99999999E+999     -1  -> -9.9999999E+998

+shix172 shift -9.99999999E+999     -8  -> -9E+991

+shix173 shift -9.99999999E+999      1  -> -9.99999990E+999

+shix174 shift -9.99999999E+999      8  -> -9.00000000E+999

+shix175 shift -1E-999              -1  -> -0E-999

+shix176 shift -1E-999              -8  -> -0E-999

+shix177 shift -1E-999               1  -> -1.0E-998

+shix178 shift -1E-999               8  -> -1.00000000E-991

+shix181 shift -1.00000000E-999     -1  -> -1.0000000E-1000

+shix182 shift -1.00000000E-999     -8  -> -1E-1007

+shix183 shift -1.00000000E-999      1  -> -0E-1007

+shix184 shift -1.00000000E-999      8  -> -0E-1007

+shix185 shift -9.00000000E-999     -1  -> -9.0000000E-1000

+shix186 shift -9.00000000E-999     -8  -> -9E-1007

+shix187 shift -9.00000000E-999      1  -> -0E-1007

+shix188 shift -9.00000000E-999      8  -> -0E-1007

+shix190 shift -1E-1007             -1  -> -0E-1007

+shix191 shift -1E-1007             -8  -> -0E-1007

+shix192 shift -1E-1007              1  -> -1.0E-1006

+shix193 shift -1E-1007              8  -> -1.00000000E-999

+

+-- more negatives (of sanities)

+shix201 shift         -0    0  ->  -0

+shix202 shift         -0    2  ->  -0

+shix203 shift         -1    2  ->  -100

+shix204 shift         -1    8  ->  -100000000

+shix205 shift         -1    9  ->  -0

+shix206 shift         -1   -1  ->  -0

+shix207 shift -123456789   -1  ->  -12345678

+shix208 shift -123456789   -8  ->  -1

+shix209 shift -123456789   -9  ->  -0

+shix210 shift         -0   -2  ->  -0

+shix211 shift         -0   -0  ->  -0

+

+

+-- Specials; NaNs are handled as usual

+shix781 shift -Inf  -8     -> -Infinity

+shix782 shift -Inf  -1     -> -Infinity

+shix783 shift -Inf  -0     -> -Infinity

+shix784 shift -Inf   0     -> -Infinity

+shix785 shift -Inf   1     -> -Infinity

+shix786 shift -Inf   8     -> -Infinity

+shix787 shift -1000 -Inf   -> NaN Invalid_operation

+shix788 shift -Inf  -Inf   -> NaN Invalid_operation

+shix789 shift -1    -Inf   -> NaN Invalid_operation

+shix790 shift -0    -Inf   -> NaN Invalid_operation

+shix791 shift  0    -Inf   -> NaN Invalid_operation

+shix792 shift  1    -Inf   -> NaN Invalid_operation

+shix793 shift  1000 -Inf   -> NaN Invalid_operation

+shix794 shift  Inf  -Inf   -> NaN Invalid_operation

+

+shix800 shift  Inf  -Inf   -> NaN Invalid_operation

+shix801 shift  Inf  -8     -> Infinity

+shix802 shift  Inf  -1     -> Infinity

+shix803 shift  Inf  -0     -> Infinity

+shix804 shift  Inf   0     -> Infinity

+shix805 shift  Inf   1     -> Infinity

+shix806 shift  Inf   8     -> Infinity

+shix807 shift  Inf   Inf   -> NaN Invalid_operation

+shix808 shift -1000  Inf   -> NaN Invalid_operation

+shix809 shift -Inf   Inf   -> NaN Invalid_operation

+shix810 shift -1     Inf   -> NaN Invalid_operation

+shix811 shift -0     Inf   -> NaN Invalid_operation

+shix812 shift  0     Inf   -> NaN Invalid_operation

+shix813 shift  1     Inf   -> NaN Invalid_operation

+shix814 shift  1000  Inf   -> NaN Invalid_operation

+shix815 shift  Inf   Inf   -> NaN Invalid_operation

+

+shix821 shift  NaN -Inf    ->  NaN

+shix822 shift  NaN -1000   ->  NaN

+shix823 shift  NaN -1      ->  NaN

+shix824 shift  NaN -0      ->  NaN

+shix825 shift  NaN  0      ->  NaN

+shix826 shift  NaN  1      ->  NaN

+shix827 shift  NaN  1000   ->  NaN

+shix828 shift  NaN  Inf    ->  NaN

+shix829 shift  NaN  NaN    ->  NaN

+shix830 shift -Inf  NaN    ->  NaN

+shix831 shift -1000 NaN    ->  NaN

+shix832 shift -1    NaN    ->  NaN

+shix833 shift -0    NaN    ->  NaN

+shix834 shift  0    NaN    ->  NaN

+shix835 shift  1    NaN    ->  NaN

+shix836 shift  1000 NaN    ->  NaN

+shix837 shift  Inf  NaN    ->  NaN

+

+shix841 shift  sNaN -Inf   ->  NaN  Invalid_operation

+shix842 shift  sNaN -1000  ->  NaN  Invalid_operation

+shix843 shift  sNaN -1     ->  NaN  Invalid_operation

+shix844 shift  sNaN -0     ->  NaN  Invalid_operation

+shix845 shift  sNaN  0     ->  NaN  Invalid_operation

+shix846 shift  sNaN  1     ->  NaN  Invalid_operation

+shix847 shift  sNaN  1000  ->  NaN  Invalid_operation

+shix848 shift  sNaN  NaN   ->  NaN  Invalid_operation

+shix849 shift  sNaN sNaN   ->  NaN  Invalid_operation

+shix850 shift  NaN  sNaN   ->  NaN  Invalid_operation

+shix851 shift -Inf  sNaN   ->  NaN  Invalid_operation

+shix852 shift -1000 sNaN   ->  NaN  Invalid_operation

+shix853 shift -1    sNaN   ->  NaN  Invalid_operation

+shix854 shift -0    sNaN   ->  NaN  Invalid_operation

+shix855 shift  0    sNaN   ->  NaN  Invalid_operation

+shix856 shift  1    sNaN   ->  NaN  Invalid_operation

+shix857 shift  1000 sNaN   ->  NaN  Invalid_operation

+shix858 shift  Inf  sNaN   ->  NaN  Invalid_operation

+shix859 shift  NaN  sNaN   ->  NaN  Invalid_operation

+

+-- propagating NaNs

+shix861 shift  NaN1   -Inf    ->  NaN1

+shix862 shift +NaN2   -1000   ->  NaN2

+shix863 shift  NaN3    1000   ->  NaN3

+shix864 shift  NaN4    Inf    ->  NaN4

+shix865 shift  NaN5   +NaN6   ->  NaN5

+shix866 shift -Inf     NaN7   ->  NaN7

+shix867 shift -1000    NaN8   ->  NaN8

+shix868 shift  1000    NaN9   ->  NaN9

+shix869 shift  Inf    +NaN10  ->  NaN10

+shix871 shift  sNaN11  -Inf   ->  NaN11  Invalid_operation

+shix872 shift  sNaN12  -1000  ->  NaN12  Invalid_operation

+shix873 shift  sNaN13   1000  ->  NaN13  Invalid_operation

+shix874 shift  sNaN14   NaN17 ->  NaN14  Invalid_operation

+shix875 shift  sNaN15  sNaN18 ->  NaN15  Invalid_operation

+shix876 shift  NaN16   sNaN19 ->  NaN19  Invalid_operation

+shix877 shift -Inf    +sNaN20 ->  NaN20  Invalid_operation

+shix878 shift -1000    sNaN21 ->  NaN21  Invalid_operation

+shix879 shift  1000    sNaN22 ->  NaN22  Invalid_operation

+shix880 shift  Inf     sNaN23 ->  NaN23  Invalid_operation

+shix881 shift +NaN25  +sNaN24 ->  NaN24  Invalid_operation

+shix882 shift -NaN26    NaN28 -> -NaN26

+shix883 shift -sNaN27  sNaN29 -> -NaN27  Invalid_operation

+shix884 shift  1000    -NaN30 -> -NaN30

+shix885 shift  1000   -sNaN31 -> -NaN31  Invalid_operation