Commit Graph

444 Commits

Author SHA1 Message Date
Paul Sokolovsky
cb9dc086a3 modio: Implement io.StringIO class. 2014-04-26 20:26:14 +03:00
Paul Sokolovsky
881078403e objstr: Implement .lstrip() & .rstrip().
Share code with .strip(). TODO: optimize .rstrip().
2014-04-26 06:20:08 +03:00
Paul Sokolovsky
755565d2cb py: Support instance __call__ method. 2014-04-25 21:17:42 +03:00
Paul Sokolovsky
efc36f0cea test/class-super: Expose super() breakage. 2014-04-19 21:54:06 +03:00
Paul Sokolovsky
d6e12723ed objarray: Implement slice subscription. 2014-04-19 20:06:57 +03:00
Paul Sokolovsky
6204460461 modstruct: Initial implementation of struct.pack(). 2014-04-19 03:22:08 +03:00
Paul Sokolovsky
83eba5dec5 sequence: Fix glaring bug in sequence comparison. 2014-04-18 21:42:54 +03:00
Damien George
559d8239ca tests: Move gen_context to import tests, because it relies on import. 2014-04-17 23:21:52 +01:00
Paul Sokolovsky
b7e90ea078 objgenerator: Generator must execute in its defining lexical context.
I.e. with its own globals. So, just as for functions, we need to switch
globals when resuming a generator.
2014-04-17 20:27:00 +03:00
Damien George
91d0ab9b0f Merge pull request #504 from lurch/patch-4
Allow the uPy used by run-tests to be overridden
2014-04-17 17:20:26 +01:00
Damien George
5cd0b2227f tests: Split out those tests requiring float and import.
Tests in basics (which should probably be renamed to core) should not
rely on float, or import any non-built-in files.  This way these tests
can be run when those features are not available.

All test in basics now pass on the pyboard using stmhal port, except for
string-repr which has some issues with character hex printing.
2014-04-17 16:21:43 +01:00
Andrew Scheller
5709453ca7 Changed the envvar name to MICROPY_MICROPYTHON
As discussed in #504
2014-04-17 01:22:45 +01:00
Damien George
7447e80f3d tests: Remove print('flush') from 2 tests, since stmhal now works.
Fixing the USB problem on stmhal now gets these 2 tests working.
2014-04-17 00:14:05 +01:00
Andrew Scheller
6ca17bcfb6 Stupid typo 2014-04-16 21:17:28 +01:00
Andrew Scheller
c297ca3327 Allow the uPy used by run-tests to be overridden
with MICROPY_MP_PY envvar, in an analogous way to MICROPY_CPYTHON3 envvar.

(the reason for this will be made clearer by a later PR)
2014-04-16 20:24:16 +01:00
Andrew Scheller
83852d3215 fix README to match contents of run-tests 2014-04-16 20:14:38 +01:00
Andrew Scheller
1b997d5244 run-tests can now skip certain tests when run under Travis CI
See the `skip_travis_tests` variable. Fixes #495
(also tidied up usage of os.path.basename() function)
2014-04-16 03:28:40 +01:00
Damien George
897fe0c0d0 py: Add builtin functions bin and oct, and some tests for them. 2014-04-15 22:03:55 +01:00
Damien George
256b319d56 tests: Disable memoryerror.py test, since it fails on travis.
Would be good to test this, but need to find a way to optionally not
running it when on travis.
2014-04-15 12:30:30 +01:00
Damien George
48aaa27c6a travis: Diff output, hopefully this works. 2014-04-15 12:20:22 +01:00
Damien George
e8ecca21ff travis: More tests output debugging. 2014-04-15 11:56:57 +01:00
Damien George
35443610b1 travis: More tests debugging. 2014-04-15 11:38:30 +01:00
Damien George
45b4cc77dd travis: Debugging failing tests. 2014-04-15 11:25:36 +01:00
Paul Sokolovsky
75ffcaeace py: Implement __delitem__ method for classes. 2014-04-15 01:30:25 +03:00
Damien George
e2a48b66c2 tests: Add property test. 2014-04-13 19:00:27 +01:00
Damien George
4417478d0f tests: Make tests pass on pyboard. 2014-04-13 17:46:30 +01:00
Damien George
b636d024d2 Make pyboard.py have its own exception; update run-tests for pyboard. 2014-04-13 13:48:33 +01:00
Damien George
f95c68e536 Merge pull request #473 from pfalcon/list-extend-iter
objlist: Make .extend accept arbitrary iterable.
2014-04-13 12:46:34 +01:00
Paul Sokolovsky
48fdaad824 py: Rename collections module to _collections.
We're not going to implement all the plethora of types in there in C.
Funnily, CPython implements defaultdict in C, and namedtuple in Python.
2014-04-13 10:24:00 +03:00
Paul Sokolovsky
aa6666c45e objlist: Make .extend accept arbitrary iterable. 2014-04-13 03:21:31 +03:00
Damien George
6ce4277551 py: Make all LOAD_FAST ops check for unbound local.
This is necessary to catch all cases where locals are referenced before
assignment.  We still keep the _0, _1, _2 versions of LOAD_FAST to help
reduced the byte code size in RAM.

Addresses issue #457.
2014-04-12 18:20:40 +01:00
Damien George
c2803db010 tests: Add some bytecode tests. 2014-04-12 18:00:32 +01:00
Paul Sokolovsky
a5afc9009f builtinimport: Implement relative imports. 2014-04-12 18:25:17 +03:00
Paul Sokolovsky
2ff3d9d0b2 builtinimport: Set __path__ attribute ASAP as it's clear we have a package.
This helps with handling "recursive" imports in sane manner, for example
when foo/__init__.py has something like "from foo import submod".
2014-04-12 02:55:18 +03:00
Damien George
8f19317540 py: Remove useless implementations of NOT_EQUAL in binary_op's.
I'm pretty sure these are never reached, since NOT_EQUAL is always
converted into EQUAL in mp_binary_op.  No one should call
type.binary_op directly, they should always go through mp_binary_op
(or mp_obj_is_equal).
2014-04-12 00:20:39 +01:00
Paul Sokolovsky
af620abcb5 py: Implement "from pkg import mod" variant of import. 2014-04-12 00:39:55 +03:00
Damien George
0e3329a6b8 py, compiler: Allow lambda's to yield. 2014-04-11 13:10:21 +00:00
Damien George
0288cf020e py: Implement compiling of *-expr within parenthesis. 2014-04-11 11:53:00 +00:00
Damien George
686afc5c0a py: Check that sequence has 2 elements for dict iterable constructor. 2014-04-11 09:13:30 +01:00
Paul Sokolovsky
be019ce063 objdict: Implement construction from iterable of pairs.
Pairs are limited to tuples so far.
2014-04-11 07:01:15 +03:00
Paul Sokolovsky
12a04392b9 objdict: Implement __getitem__ method. 2014-04-11 05:24:44 +03:00
Paul Sokolovsky
0c43cf9154 modstruct: Basic implementation of native struct alignment and types. 2014-04-11 03:59:16 +03:00
Paul Sokolovsky
6582d64d01 modstruct: Refactor to support both LE and BE packed structs. 2014-04-11 03:58:49 +03:00
Damien George
f31b6ff334 tests: Add test for multi-comparison. 2014-04-10 17:29:51 +00:00
Paul Sokolovsky
978607aeff objfun: Fix default arguments filling loop, was broken in presense of kwargs. 2014-04-10 05:39:38 +03:00
Paul Sokolovsky
e9db840480 py: Start implementing "struct" module.
Only calcsize() and unpack() functions provided so far, for little-endian
byte order. Format strings don't support repition spec (like "2b3i").

Unfortunately, dealing with all the various binary type sizes and alignments
will lead to quite a bloated "binary" helper functions  - if optimizing for
speed. Need to think if using dynamic parametrized algos makes more sense.
2014-04-10 03:58:03 +03:00
Damien George
038fd52faa Merge branch 'str-index' of github.com:xbe/micropython into xbe-str-index 2014-04-09 20:44:37 +01:00
Damien George
a157e4caba py: str.join can now take arbitrary iterable as argument. 2014-04-09 19:17:53 +01:00
Damien George
13d6739cc7 py: Generators can have their locals closed over. 2014-04-09 19:01:45 +01:00
Damien George
2bf7c09222 py: Properly implement deletion of locals and derefs, and detect errors.
Needed to reinstate 2 delete opcodes, to specifically check that a local
is not deleted twice.
2014-04-09 15:26:46 +01:00
Paul Sokolovsky
a985b4593d objint: Implement int.from_bytes() class method and .to_bytes() method.
These two are apprerently the most concise and efficient way to convert
int to/from bytes in Python. The alternatives are struct and array modules,
but methods using them are more verbose in Python code and less efficient
in memory/cycles.
2014-04-09 01:07:37 +03:00
Damien George
2b0091983f tests: Oops: fix del-attr. 2014-04-08 23:02:24 +01:00
Damien George
f4c9b33abf py: Remove DELETE_SUBSCR opcode, combine with STORE_SUBSCR.
This makes the runtime and object APIs more consistent.  mp_store_subscr
functionality now moved into objects (ie list and dict store_item).
2014-04-08 21:32:29 +01:00
Paul Sokolovsky
4dcb605ac4 py: Make bytearray a proper type. 2014-04-08 22:11:40 +03:00
xbe
3d9a39e211 py: Implement str.[r]index() and add tests for them. 2014-04-08 11:51:41 -07:00
Damien George
134c10e776 Merge branch 'master' of github.com:micropython/micropython 2014-04-08 18:29:50 +01:00
Damien George
495d781a36 py: implement UNPACK_EX byte code (for: a, *b, c = d) 2014-04-08 17:51:47 +01:00
Paul Sokolovsky
b9cf3d3730 bytearray: Support bytearray(int) constructor.
To create bytearray of given length.
2014-04-08 19:08:34 +03:00
Andrew Scheller
12968fb6b2 Display \r and \t escape codes in string repr 2014-04-08 02:42:50 +01:00
Dave Hylands
c4029e5079 Add string formatting support for longlong and mpz. 2014-04-07 11:38:45 -07:00
Damien George
1422865c99 Merge pull request #445 from lurch/test-sorted-sets
Modify set tests to print sorted sets directly
2014-04-07 13:15:33 +01:00
Andrew Scheller
1ff6011abc Modify set tests to print sorted sets directly
instead of creating temporary lists and sorting those in-place
2014-04-07 05:00:03 +01:00
Andrew Scheller
a1a9ab2b2c Add tests for sorted() function
and check that sorted(list) produces same output as list.sort()
2014-04-07 04:41:54 +01:00
Paul Sokolovsky
4d2238d2ce tests: Fix more tests which depend on order of elements in set. 2014-04-07 03:08:46 +03:00
Paul Sokolovsky
bd6f3d31d2 tests: Fix few tests which depend on order of elements in set. 2014-04-07 02:54:16 +03:00
Damien George
07e24a6294 tests: Fix tests with sets to print sorted set. 2014-04-07 00:42:09 +01:00
Damien George
ff715429ea py: Fix str.replace for case when arg 0 or 1 is empty string. 2014-04-07 00:39:13 +01:00
Paul Sokolovsky
b4dea46d8b tests: Fix few tests which depend on order of elements in dict.
With dict being unordered of course.
2014-04-06 21:31:42 +03:00
Paul Sokolovsky
e2adff3608 tests/dict2.py: Add combined test for dict(dict) and dict equality. 2014-04-06 21:31:42 +03:00
Damien George
cdd96dff2c py: Implement more features in native emitter.
On x64, native emitter now passes 70 of the tests.
2014-04-06 12:58:40 +01:00
Damien George
deed087e2c py: str.split: handle non-default separator. 2014-04-06 11:11:15 +01:00
Damien George
2a037408af tests: Add test to check issue #429. 2014-04-05 18:17:51 +01:00
Damien George
327a3e2faa Merge pull request #435 from dhylands/str-modulo-float
Allow floating point arguments with %d,i,u,o,x,X formats
2014-04-05 18:10:11 +01:00
Damien George
23419a2f8a Merge pull request #433 from pfalcon/getattr-3arg
py: Support 3-arg getattr() builtin (with default value).
2014-04-05 18:00:04 +01:00
Damien George
95004e5114 py: Fix delete operation on map/dict and set objects.
Hash table can now be completely full (ie now NULL entry) before a
resize is triggered.  Use sentinel value to indicate delete entry in the
table.
2014-04-05 17:17:19 +01:00
Dave Hylands
f81a49e464 Allow floating point arguments with %d,i,u,o,x,X formats 2014-04-05 08:26:51 -07:00
Damien George
b6ec51bbf0 tests: Add test for dict delete. It fails. 2014-04-05 13:26:00 +01:00
Paul Sokolovsky
bfb7d6a26d py: Support 3-arg getattr() builtin (with default value). 2014-04-05 13:34:02 +03:00
Paul Sokolovsky
438d504e27 objtype: Add equality test for type types. 2014-04-05 13:10:56 +03:00
Paul Sokolovsky
91cbe6033a py: Allow types to be hashable.
Quite natural to have d[int] = handle_int .
2014-04-05 12:51:58 +03:00
Paul Sokolovsky
a7752a4540 run-tests: Elaborate python3 command override capabilities. 2014-04-04 17:28:34 +03:00
Damien George
9b1599c663 Merge pull request #422 from dhylands/str-modulo
Str modulo
2014-04-04 12:37:52 +01:00
Damien George
28390340e5 tests: Make rge-sm.py use less memory (integration step increased).
In addition to memory allocation failure, other problem was that 10**17
was overflowing.  Now passes.
2014-04-04 11:15:54 +00:00
Damien George
6902eeda25 py: Add m_malloc_fail function to handle memory allocation error.
A malloc/realloc fail now throws MemoryError.
2014-04-04 10:52:59 +00:00
Paul Sokolovsky
072cf022e0 tests/file-with: Add testcase which failed for @dpgeorge.
Works on x86.
2014-04-04 12:15:39 +03:00
Dave Hylands
6756a37a77 Implements most of str.modulo
The alternate form for floating point doesn't work yet.
The %(name)s form doesn't work yet.
2014-04-03 23:55:02 -07:00
Damien George
4b34c76fd6 Changes to get unix/ port compiling on Cygwin. 2014-04-03 23:51:16 +01:00
Damien George
2309369291 tests: Allow to run tests on pyboard.
To run the tests on the pyboard you need to set the "test_on_pyboard"
variable to "True", and also have tools/pyboard.py available for import
(easiest is to symlink to it).
2014-04-03 22:44:51 +01:00
Paul Sokolovsky
34e1199b3a run-tests: Allow to override python3 command to use via environment var. 2014-04-03 22:09:12 +03:00
Paul Sokolovsky
c61ce96590 unix file: Implement context manager protocol (for "with" statement). 2014-04-03 22:09:05 +03:00
Damien George
c322c5f07f py: Fix regress for printing of floats and #if.
Also change formating modifier in test script (it still passes with
original format though).
2014-04-02 20:04:15 +01:00
Paul Sokolovsky
ad1bac63f7 tests/string-format: Add test for formatting ints with float format.
Fail currently.
2014-04-02 20:41:34 +03:00
Damien George
929a675a3d Change test scripts to use python3; bytecode tests use python3.4.
I upgraded to Python 3.4.0, so needed to make these changes.  Hopefully
the tests still run with Python 3.3.x (the scripts use python3 so are
agnostic as to the subversion).

Bytecode tests are tightly coupled to the Python version, and now some
fail against Python 3.4.
2014-04-02 15:31:39 +01:00
Damien George
10e21b9770 Add more tests. 2014-04-02 14:23:04 +01:00
Damien George
93b7faa29a py: Factor out static/class method unwrapping code; add tests. 2014-04-02 14:13:26 +01:00
Damien George
e4c834fc1e Add a test. 2014-04-02 13:32:37 +01:00
Damien George
4881566874 py: Add support for sep and end keywords in print. 2014-04-02 10:34:44 +01:00
Damien George
084ef373fb py: Fix math.{ceil,floor,trunc} to return int. 2014-04-01 21:21:50 +01:00
Dave Hylands
7adc2e0431 Turn off full tests in string-format.py
Add some basic coverage tests
2014-04-01 08:10:02 -07:00
Paul Sokolovsky
51413c8cb6 tests: Add test for implicit float to int conversion (not allowed!) 2014-04-01 13:50:16 +03:00
Dave Hylands
baf6f14deb Enhance str.format support
This adds support for almost everything (the comma isn't currently
supported).

The "unspecified" type with floats also doesn't behave exactly like
python.

Tested under unix with float and double
Spot tested on stmhal
2014-04-01 01:17:33 -07:00
Damien George
e44d26ae0c py: Implement __getattr__.
It's not completely satisfactory, because a failed call to __getattr__
should not raise an exception.

__setattr__ could be implemented, but it would slow down all stores to a
user created object.  Need to implement some caching system.
2014-03-31 22:57:56 +01:00
Paul Sokolovsky
4db727afea objstr: Very basic implementation of % string formatting operator. 2014-03-31 21:20:52 +03:00
Damien George
18a6eb9e13 Merge branch 'master' of github.com:micropython/micropython 2014-03-31 18:03:52 +01:00
Damien George
3ff2d03891 py: Fix bug in optimised for .. range.
Don't store final, failing value to the loop variable.  This fix also
makes for .. range a bit more efficient, as it uses less store/load
pairs for the loop variable.
2014-03-31 18:02:22 +01:00
Paul Sokolovsky
183faa3b13 tests: Add testcase for multiple inheritance. 2014-03-31 19:46:35 +03:00
Paul Sokolovsky
6ded55a61f py: Properly implement divide-by-zero handling.
"1/0" is sacred idiom, the shortest way to break program execution
(sys.exit() is too long).
2014-03-31 02:23:57 +03:00
Damien George
0aa4379543 Merge pull request #399 from pfalcon/gen-defargs
objgenerator: Handle default args to generator functions.
2014-03-30 21:51:49 +01:00
Paul Sokolovsky
f7eaf605c0 py: Fix "TypeError: 'iterator' object is not iterable", doh. 2014-03-30 23:37:24 +03:00
Paul Sokolovsky
f39d3b93da py: Implement support for generalized generator protocol.
Iterators and ducktype objects can now be arguments of yield from.
2014-03-30 23:30:16 +03:00
Damien George
230fec77d7 py: Implement positional and keyword args via * and **.
Extends previous implementation with * for function calls to * and **
for both function and method calls.
2014-03-30 21:21:24 +01:00
Paul Sokolovsky
7fafb28f6d objgenerator: Handle default args to generator functions.
Addresses #397.
2014-03-30 20:25:19 +03:00
Paul Sokolovsky
55ca075cab vm: Implement CALL_FUNCTION_VAR opcode (foo(*(1, 2, 3))). 2014-03-30 17:47:16 +03:00
Damien George
010043caaf Add "tracing" to try-reraise2.py test. It now fails. 2014-03-30 00:39:15 +00:00
Paul Sokolovsky
0c904df8e6 vm: Save current active exception on opening new try block.
Required to reraise correct exceptions in except block, regardless if more
try blocks with active exceptions happen in the same except block.

P.S. This "automagic reraise" appears to be quite wasteful feature of Python
- we need to save pending exception just in case it *might* be reraised.
Instead, programmer could explcitly capture exception to a variable using
"except ... as var", and reraise that. So, consider disabling argless raise
support as an optimization.
2014-03-30 01:01:35 +02:00
Paul Sokolovsky
d109676ec0 py: Reraising exception possible only in except block. 2014-03-29 23:18:59 +02:00
Damien George
21a07dc50f Merge pull request #389 from pfalcon/with-statement
With statement implementation
2014-03-29 14:00:03 +00:00
Damien George
da51a399cf Merge pull request #383 from pfalcon/yield-from
Implement "yield from"
2014-03-29 12:18:14 +00:00
Damien George
75f71584a6 tests: Remove unimplemented exceptions from testing. 2014-03-29 11:43:00 +00:00
Paul Sokolovsky
e7286ef2c7 tests: Add "with" statement testcases. 2014-03-29 04:39:31 +02:00
Paul Sokolovsky
3c2b2acd8c tests: Add testcases for yield from. 2014-03-28 02:50:56 +02:00
Damien George
d6f9434091 Merge pull request #381 from pfalcon/closure-defargs
py: Support closures with default args.
2014-03-26 23:09:14 +00:00
Paul Sokolovsky
e9137b94f2 py: Implement getattr() builtin. 2014-03-27 00:11:36 +02:00
Paul Sokolovsky
2447a5b582 py: Support closures with default args. 2014-03-26 23:17:44 +02:00
Damien George
66eaf84b8c py: Replace mp_const_stop_iteration object with MP_OBJ_NULL. 2014-03-26 19:27:58 +00:00
Damien George
688e220d26 Merge pull request #379 from pfalcon/reraise
vm: Implement raise statement w/o args (reraising last exception).
2014-03-26 18:59:15 +00:00
Damien George
752ba554cc Merge branch 'gen-close-ret-val' of github.com:pfalcon/micropython into pfalcon-gen-close-ret-val 2014-03-26 18:46:06 +00:00
Paul Sokolovsky
c403076ef8 vm: Implement raise statement w/o args (reraising last exception). 2014-03-26 17:32:02 +02:00
Paul Sokolovsky
962b1cd1b1 objgenerator: Implement return with value and .close() method.
Return with value gets converted to StopIteration(value). Implementation
keeps optimizing against creating of possibly unneeded exception objects,
so there're considerable refactoring to implement these features.
2014-03-26 15:40:58 +02:00
Damien George
681d0a9ca7 Merge pull request #370 from xbe/str-rfind
py/objstr.c: Implement str.rfind() and add tests for it, refactor find_subbytes().
2014-03-25 15:51:15 +00:00
Damien George
ffb5cfc8d8 py: Removed some unnecessary exception objects.
They still exist in commented-out form in objexcept.c if they are ever
needed.
2014-03-25 14:29:40 +00:00
Paul Sokolovsky
9512e9e817 objexcept: Add "args" exception attribute, as well as StopIteration.value. 2014-03-25 01:42:01 +02:00
Paul Sokolovsky
7f8b31345b rt_load_method(): Add missing qstr_str() when getting type name. 2014-03-25 01:39:10 +02:00
xbe
17a5a83fb4 Implement str.rfind() and add tests for it. 2014-03-24 01:00:00 -07:00
Paul Sokolovsky
f909034400 py: Implement support for "except Exception as var" clause.
For this, needed to implement DELETE_NAME bytecode (because var bound
in except clause is automatically deleted at its end).
http://docs.python.org/3/reference/compound_stmts.html#except :
"When an exception has been assigned using as target, it is cleared at
the end of the except clause."
2014-03-23 22:00:04 +02:00
Paul Sokolovsky
fd232c3ef7 run-tests: Dump output of failing tests to files again.
This was a long-standing regression from converting script from sh to python.
2014-03-23 01:58:07 +02:00
Damien George
a6d53188b7 Merge pull request #359 from rjdowdall/master
Fixed some math functions and added more exceptions.
2014-03-22 20:26:17 +00:00
Rachel Dowdall
56402796d8 Fixed floor division on mp ints and small ints. Added a floordivide test case. 2014-03-22 20:19:24 +00:00
Rachel Dowdall
cde8631f15 Fixed modulo operator on ints and mp ints to agree with python. Added intdivmod.c and tests/basics/modulo.py. 2014-03-22 17:29:27 +00:00
Paul Sokolovsky
48caa09a9d objgenerator: Implement .throw() method to throw exceptions into generator. 2014-03-22 17:55:42 +02:00
Paul Sokolovsky
61fd20f168 objgenerator: Implement throwing exceptions out of generator. 2014-03-22 17:55:42 +02:00
Paul Sokolovsky
c0abc28aa1 objgenerator: Keep exception stack within generator object, like value stack.
This is required to properly handle exceptions across yields.
2014-03-22 17:55:42 +02:00
Rachel Dowdall
721c55dced Added exception hierarchy except for OSError and UnicodeError (requires arguments). Comment out the errors that aren't needed if memory becomes an issue. 2014-03-22 15:28:16 +00:00
Rachel Dowdall
249b9c761d Fixed broken math functions that return bool and added some more. 2014-03-22 14:39:33 +00:00
Paul Sokolovsky
1ecea7c753 py: Make 'bytes' be a proper type, support standard constructor args. 2014-03-22 00:07:04 +02:00
Paul Sokolovsky
42901554db objint_longlong: Add regression test for improper inplace op implementation. 2014-03-22 00:04:04 +02:00
Damien George
e3e7c2bafb Merge pull request #351 from xbe/str-partition
Implement str.partition and add tests for it.
2014-03-21 20:19:30 +00:00
xbe
4504ea8007 Implement str.rpartition and add tests for it. 2014-03-21 02:58:09 -07:00
xbe
613a8e3edf Implement str.partition and add tests for it. 2014-03-21 02:57:18 -07:00
Damien George
1609f85582 Rename test so that it doesn't clash with Python math module. 2014-03-20 23:41:04 +00:00