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-rw-r--r--Doc/conf.py4
-rw-r--r--Doc/documenting/markup.rst6
-rw-r--r--Doc/library/dis.rst8
-rw-r--r--Doc/library/io.rst23
-rw-r--r--Doc/library/math.rst47
-rw-r--r--Doc/library/os.rst6
-rw-r--r--Doc/library/shutil.rst20
-rw-r--r--Doc/library/subprocess.rst34
-rw-r--r--Doc/tools/sphinxext/indexcontent.html3
-rw-r--r--Doc/whatsnew/2.6.rst75
-rw-r--r--Lib/subprocess.py32
-rw-r--r--Lib/test/test_math.py153
-rw-r--r--Lib/test/test_subprocess.py46
-rw-r--r--Modules/cmathmodule.c237
-rw-r--r--Modules/mathmodule.c95
15 files changed, 582 insertions, 207 deletions
diff --git a/Doc/conf.py b/Doc/conf.py
index c9f9114..27f5ed3 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -75,9 +75,6 @@ html_last_updated_fmt = '%b %d, %Y'
# typographically correct entities.
html_use_smartypants = True
-# Content template for the index page, filename relative to this file.
-html_index = 'indexcontent.html'
-
# Custom sidebar templates, filenames relative to this file.
html_sidebars = {
'index': 'indexsidebar.html',
@@ -86,6 +83,7 @@ html_sidebars = {
# Additional templates that should be rendered to pages.
html_additional_pages = {
'download': 'download.html',
+ 'index': 'indexcontent.html',
}
# Output file base name for HTML help builder.
diff --git a/Doc/documenting/markup.rst b/Doc/documenting/markup.rst
index f3a8237..7cf89b0 100644
--- a/Doc/documenting/markup.rst
+++ b/Doc/documenting/markup.rst
@@ -319,8 +319,8 @@ a matching identifier is found:
.. describe:: func
The name of a Python function; dotted names may be used. The role text
- should include trailing parentheses to enhance readability. The parentheses
- are stripped when searching for identifiers.
+ should not include trailing parentheses to enhance readability. The
+ parentheses are stripped when searching for identifiers.
.. describe:: data
@@ -338,7 +338,7 @@ a matching identifier is found:
.. describe:: meth
The name of a method of an object. The role text should include the type
- name, method name and the trailing parentheses. A dotted name may be used.
+ name and the method name. A dotted name may be used.
.. describe:: attr
diff --git a/Doc/library/dis.rst b/Doc/library/dis.rst
index 3af9250..125a80f 100644
--- a/Doc/library/dis.rst
+++ b/Doc/library/dis.rst
@@ -528,9 +528,11 @@ the more significant byte last.
.. opcode:: IMPORT_NAME (namei)
- Imports the module ``co_names[namei]``. The module object is pushed onto the
- stack. The current namespace is not affected: for a proper import statement, a
- subsequent ``STORE_FAST`` instruction modifies the namespace.
+ Imports the module ``co_names[namei]``. TOS and TOS1 are popped and provide
+ the *fromlist* and *level* arguments of :func:`__import__`. The module
+ object is pushed onto the stack. The current namespace is not affected:
+ for a proper import statement, a subsequent ``STORE_FAST`` instruction
+ modifies the namespace.
.. opcode:: IMPORT_FROM (namei)
diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index 4fb79b9..6280adc 100644
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -101,13 +101,15 @@ Module Interface
:mod:`codecs` module for the list of supported encodings.
*errors* is an optional string that specifies how encoding and decoding
- errors are to be handled---this argument should not be used in binary mode.
- Pass ``'strict'`` to raise a :exc:`ValueError` exception if there is an
- encoding error (the default of ``None`` has the same effect), or pass
- ``'ignore'`` to ignore errors. (Note that ignoring encoding errors can lead
- to data loss.) ``'replace'`` causes a replacement marker (such as ``'?'``)
- to be inserted where there is malformed data. For all possible values, see
- :func:`codecs.register`.
+ errors are to be handled. Pass ``'strict'`` to raise a :exc:`ValueError`
+ exception if there is an encoding error (the default of ``None`` has the same
+ effect), or pass ``'ignore'`` to ignore errors. (Note that ignoring encoding
+ errors can lead to data loss.) ``'replace'`` causes a replacement marker
+ (such as ``'?'``) to be inserted where there is malformed data. When
+ writing, ``'xmlcharrefreplace'`` (replace with the appropriate XML character
+ reference) or ``'backslashreplace'`` (replace with backslashed escape
+ sequences) can be used. Any other error handling name that has been
+ registered with :func:`codecs.register_error` is also valid.
*newline* controls how universal newlines works (it only applies to text
mode). It can be ``None``, ``''``, ``'\n'``, ``'\r'``, and ``'\r\n'``. It
@@ -581,8 +583,11 @@ Text I/O
exception if there is an encoding error (the default of ``None`` has the same
effect), or pass ``'ignore'`` to ignore errors. (Note that ignoring encoding
errors can lead to data loss.) ``'replace'`` causes a replacement marker
- (such as ``'?'``) to be inserted where there is malformed data. For all
- possible values see :func:`codecs.register`.
+ (such as ``'?'``) to be inserted where there is malformed data. When
+ writing, ``'xmlcharrefreplace'`` (replace with the appropriate XML character
+ reference) or ``'backslashreplace'`` (replace with backslashed escape
+ sequences) can be used. Any other error handling name that has been
+ registered with :func:`codecs.register_error` is also valid.
*newline* can be ``None``, ``''``, ``'\n'``, ``'\r'``, or ``'\r\n'``. It
controls the handling of line endings. If it is ``None``, universal newlines
diff --git a/Doc/library/math.rst b/Doc/library/math.rst
index 024897f..e906af2 100644
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -143,11 +143,15 @@ Power and logarithmic functions:
.. function:: pow(x, y)
- Return ``x**y``. ``1.0**y`` returns *1.0*, even for ``1.0**nan``. ``0**y``
- returns *0.* for all positive *y*, *0* and *NAN*.
+ Return ``x`` raised to the power ``y``. Exceptional cases follow
+ Annex 'F' of the C99 standard as far as possible. In particular,
+ ``pow(1.0, x)`` and ``pow(x, 0.0)`` always return ``1.0``, even
+ when ``x`` is a zero or a NaN. If both ``x`` and ``y`` are finite,
+ ``x`` is negative, and ``y`` is not an integer then ``pow(x, y)``
+ is undefined, and raises :exc:`ValueError`.
.. versionchanged:: 2.6
- The outcome of ``1**nan`` and ``0**nan`` was undefined.
+ The outcome of ``1**nan`` and ``nan**0`` was undefined.
.. function:: sqrt(x)
@@ -198,13 +202,6 @@ Trigonometric functions:
Return the sine of *x* radians.
-.. function:: asinh(x)
-
- Return the inverse hyperbolic sine of *x*, in radians.
-
- .. versionadded:: 2.6
-
-
.. function:: tan(x)
Return the tangent of *x* radians.
@@ -224,18 +221,32 @@ Angular conversion:
Hyperbolic functions:
-.. function:: cosh(x)
+.. function:: acosh(x)
- Return the hyperbolic cosine of *x*.
+ Return the inverse hyperbolic cosine of *x*.
+ .. versionadded:: 2.6
-.. function:: acosh(x)
- Return the inverse hyperbolic cosine of *x*, in radians.
+.. function:: asinh(x)
+
+ Return the inverse hyperbolic sine of *x*.
.. versionadded:: 2.6
+.. function:: atanh(x)
+
+ Return the inverse hyperbolic tangent of *x*.
+
+ .. versionadded:: 2.6
+
+
+.. function:: cosh(x)
+
+ Return the hyperbolic cosine of *x*.
+
+
.. function:: sinh(x)
Return the hyperbolic sine of *x*.
@@ -246,12 +257,6 @@ Hyperbolic functions:
Return the hyperbolic tangent of *x*.
-.. function:: atanh(x)
-
- Return the inverse hyperbolic tangent of *x*, in radians.
-
- .. versionadded:: 2.6
-
The module also defines two mathematical constants:
@@ -279,7 +284,7 @@ The module also defines two mathematical constants:
:exc:`OverflowError` isn't defined, and in cases where ``math.log(0)`` raises
:exc:`OverflowError`, ``math.log(0L)`` may raise :exc:`ValueError` instead.
- All functions return a quite *NaN* if at least one of the args is *NaN*.
+ All functions return a quiet *NaN* if at least one of the args is *NaN*.
Signaling *NaN*s raise an exception. The exception type still depends on the
platform and libm implementation. It's usually :exc:`ValueError` for *EDOM*
and :exc:`OverflowError` for errno *ERANGE*.
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index ec35c3b..bf0fe19 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -1254,7 +1254,8 @@ to be ignored.
For :func:`execle`, :func:`execlpe`, :func:`execve`, and :func:`execvpe` (note
that these all end in "e"), the *env* parameter must be a mapping which is
- used to define the environment variables for the new process; the :func:`execl`,
+ used to define the environment variables for the new process (these are used
+ instead of the current process' environment); the functions :func:`execl`,
:func:`execlp`, :func:`execv`, and :func:`execvp` all cause the new process to
inherit the environment of the current process. Availability: Macintosh, Unix,
Windows.
@@ -1484,7 +1485,8 @@ written in Python, such as a mail server's external command delivery program.
For :func:`spawnle`, :func:`spawnlpe`, :func:`spawnve`, and :func:`spawnvpe`
(note that these all end in "e"), the *env* parameter must be a mapping
- which is used to define the environment variables for the new process; the
+ which is used to define the environment variables for the new process (they are
+ used instead of the current process' environment); the functions
:func:`spawnl`, :func:`spawnlp`, :func:`spawnv`, and :func:`spawnvp` all cause
the new process to inherit the environment of the current process.
diff --git a/Doc/library/shutil.rst b/Doc/library/shutil.rst
index db4a259..2300fe9 100644
--- a/Doc/library/shutil.rst
+++ b/Doc/library/shutil.rst
@@ -28,15 +28,6 @@ copying and removal. For operations on individual files, see also the
are not copied.
-.. function:: copyfile(src, dst)
-
- Copy the contents (no metadata) of the file named *src* to a file named *dst*.
- The destination location must be writable; otherwise, an :exc:`IOError` exception
- will be raised. If *dst* already exists, it will be replaced. Special files
- such as character or block devices and pipes cannot be copied with this
- function. *src* and *dst* are path names given as strings.
-
-
.. function:: copyfileobj(fsrc, fdst[, length])
Copy the contents of the file-like object *fsrc* to the file-like object *fdst*.
@@ -48,6 +39,17 @@ copying and removal. For operations on individual files, see also the
be copied.
+.. function:: copyfile(src, dst)
+
+ Copy the contents (no metadata) of the file named *src* to a file named *dst*.
+ *dst* must be the complete target file name; look at :func:`copy` for a copy that
+ accepts a target directory path.
+ The destination location must be writable; otherwise, an :exc:`IOError` exception
+ will be raised. If *dst* already exists, it will be replaced. Special files
+ such as character or block devices and pipes cannot be copied with this
+ function. *src* and *dst* are path names given as strings.
+
+
.. function:: copymode(src, dst)
Copy the permission bits from *src* to *dst*. The file contents, owner, and
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index c876efe..2344bcb 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -89,8 +89,9 @@ This module defines one class called :class:`Popen`:
searching the executable, so you can't specify the program's path relative to
*cwd*.
- If *env* is not ``None``, it defines the environment variables for the new
- process.
+ If *env* is not ``None``, it must be a mapping that defines the environment
+ variables for the new process; these are used instead of inheriting the current
+ process' environment, which is the default behavior.
If *universal_newlines* is :const:`True`, the file objects stdout and stderr are
opened as text files, but lines may be terminated by any of ``'\n'``, the Unix
@@ -202,6 +203,35 @@ Instances of the :class:`Popen` class have the following methods:
size is large or unlimited.
+.. method:: Popen.send_signal(signal)
+
+ Sends the signal *signal* to the child.
+
+ .. note::
+
+ On Windows only SIGTERM is supported so far. It's an alias for
+ :meth:`terminate`.
+
+ .. versionadded:: 2.6
+
+
+.. method:: Popen.terminate()
+
+ Stop the child. On Posix OSs the method sends SIGTERM to the
+ child. On Windows the Win32 API function TerminateProcess is called
+ to stop the child.
+
+ .. versionadded:: 2.6
+
+
+.. method:: Popen.kill()
+
+ Kills the child. On Posix OSs the function sends SIGKILL to the child.
+ On Windows :meth:`kill` is an alias for :meth:`terminate`.
+
+ .. versionadded:: 2.6
+
+
The following attributes are also available:
.. attribute:: Popen.stdin
diff --git a/Doc/tools/sphinxext/indexcontent.html b/Doc/tools/sphinxext/indexcontent.html
index 218f346..67a9eaf 100644
--- a/Doc/tools/sphinxext/indexcontent.html
+++ b/Doc/tools/sphinxext/indexcontent.html
@@ -1,3 +1,5 @@
+{% extends "defindex.html" %}
+{% block tables %}
<p><strong>Parts of the documentation:</strong></p>
<table class="contentstable" align="center"><tr>
<td width="50%">
@@ -54,3 +56,4 @@
<p class="biglink"><a class="biglink" href="{{ pathto("copyright") }}">Copyright</a></p>
</td></tr>
</table>
+{% endblock %}
diff --git a/Doc/whatsnew/2.6.rst b/Doc/whatsnew/2.6.rst
index fa51221..eb5d4b2 100644
--- a/Doc/whatsnew/2.6.rst
+++ b/Doc/whatsnew/2.6.rst
@@ -1292,11 +1292,42 @@ Here are all of the changes that Python 2.6 makes to the core Python language.
:func:`isnan`, return true if their floating-point argument is
infinite or Not A Number. (:issue:`1640`)
- The ``math.copysign(x, y)`` function
- copies the sign bit of an IEEE 754 number, returning the absolute
- value of *x* combined with the sign bit of *y*. For example,
- ``math.copysign(1, -0.0)`` returns -1.0. (Contributed by Christian
- Heimes.)
+* The :mod:`math` module has seven new functions, and the existing
+ functions have been improved to give more consistent behaviour
+ across platforms, especially with respect to handling of
+ floating-point exceptions and IEEE 754 special values.
+ The new functions are:
+
+ * :func:`isinf` and :func:`isnan` determine whether a given float is
+ a (positive or negative) infinity or a NaN (Not a Number),
+ respectively.
+
+ * ``copysign(x, y)`` copies the sign bit of an IEEE 754 number,
+ returning the absolute value of *x* combined with the sign bit of
+ *y*. For example, ``math.copysign(1, -0.0)`` returns -1.0.
+ (Contributed by Christian Heimes.)
+
+ * The inverse hyperbolic functions :func:`acosh`, :func:`asinh` and
+ :func:`atanh`.
+
+ * The function :func:`log1p`, returning the natural logarithm of
+ *1+x* (base *e*).
+
+ There's also a new :func:`trunc` function as a result of the
+ backport of `PEP 3141's type hierarchy for numbers <#pep-3141>`__.
+
+ The existing math functions have been modified to follow the
+ recommendations of the C99 standard with respect to special values
+ whenever possible. For example, ``sqrt(-1.)`` should now give a
+ :exc:`ValueError` across (nearly) all platforms, while
+ ``sqrt(float('NaN'))`` should return a NaN on all IEEE 754
+ platforms. Where Annex 'F' of the C99 standard recommends signaling
+ 'divide-by-zero' or 'invalid', Python will raise :exc:`ValueError`.
+ Where Annex 'F' of the C99 standard recommends signaling 'overflow',
+ Python will raise :exc:`OverflowError`. (See :issue:`711019`,
+ :issue:`1640`.)
+
+ (Contributed by Christian Heimes and Mark Dickinson.)
* Changes to the :class:`Exception` interface
as dictated by :pep:`352` continue to be made. For 2.6,
@@ -1415,6 +1446,40 @@ complete list of changes, or look through the CVS logs for all the details.
available, instead of restricting itself to protocol 1.
(Contributed by W. Barnes; :issue:`1551443`.)
+* The :mod:`cmath` module underwent an extensive set of revisions,
+ thanks to Mark Dickinson and Christian Heimes, that added some new
+ features and greatly improved the accuracy of the computations.
+
+ Five new functions were added:
+
+ * :func:`polar` converts a complex number to polar form, returning
+ the modulus and argument of that complex number.
+
+ * :func:`rect` does the opposite, turning a (modulus, argument) pair
+ back into the corresponding complex number.
+
+ * :func:`phase` returns the phase or argument of a complex number.
+
+ * :func:`isnan` returns True if either
+ the real or imaginary part of its argument is a NaN.
+
+ * :func:`isinf` returns True if either the real or imaginary part of
+ its argument is infinite.
+
+ The revisions also improved the numerical soundness of the
+ :mod:`cmath` module. For all functions, the real and imaginary
+ parts of the results are accurate to within a few units of least
+ precision (ulps) whenever possible. See :issue:`1381` for the
+ details. The branch cuts for :func:`asinh`, :func:`atanh`: and
+ :func:`atan` have also been corrected.
+
+ The tests for the module have been greatly expanded; nearly 2000 new
+ test cases exercise the algebraic functions.
+
+ On IEEE 754 platforms, the :mod:`cmath` module now handles IEEE 754
+ special values and floating-point exceptions in a manner consistent
+ with Annex 'G' of the C99 standard.
+
* A new data type in the :mod:`collections` module: :class:`namedtuple(typename,
fieldnames)` is a factory function that creates subclasses of the standard tuple
whose fields are accessible by name as well as index. For example::
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 5aee34d..d39eb19 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -290,6 +290,7 @@ import io
import os
import traceback
import gc
+import signal
# Exception classes used by this module.
class CalledProcessError(Exception):
@@ -317,6 +318,7 @@ if mswindows:
from win32process import CreateProcess, STARTUPINFO, \
GetExitCodeProcess, STARTF_USESTDHANDLES, \
STARTF_USESHOWWINDOW, CREATE_NEW_CONSOLE
+ from win32process import TerminateProcess
from win32event import WaitForSingleObject, INFINITE, WAIT_OBJECT_0
else:
from _subprocess import *
@@ -828,6 +830,21 @@ class Popen(object):
self.wait()
return (stdout, stderr)
+ def send_signal(self, sig):
+ """Send a signal to the process
+ """
+ if sig == signal.SIGTERM:
+ self.terminate()
+ else:
+ raise ValueError("Only SIGTERM is supported on Windows")
+
+ def terminate(self):
+ """Terminates the process
+ """
+ TerminateProcess(self._handle, 1)
+
+ kill = terminate
+
else:
#
# POSIX methods
@@ -1115,6 +1132,21 @@ class Popen(object):
self.wait()
return (stdout, stderr)
+ def send_signal(self, sig):
+ """Send a signal to the process
+ """
+ os.kill(self.pid, sig)
+
+ def terminate(self):
+ """Terminate the process with SIGTERM
+ """
+ self.send_signal(signal.SIGTERM)
+
+ def kill(self):
+ """Kill the process with SIGKILL
+ """
+ self.send_signal(signal.SIGKILL)
+
def _demo_posix():
#
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index b8c23db..401fc1e 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -102,7 +102,7 @@ class MathTests(unittest.TestCase):
self.ftest('atan(0)', math.atan(0), 0)
self.ftest('atan(1)', math.atan(1), math.pi/4)
self.ftest('atan(inf)', math.atan(INF), math.pi/2)
- self.ftest('atan(-inf)', math.atan(-INF), -math.pi/2)
+ self.ftest('atan(-inf)', math.atan(NINF), -math.pi/2)
self.assert_(math.isnan(math.atan(NAN)))
def testAtanh(self):
@@ -383,14 +383,140 @@ class MathTests(unittest.TestCase):
self.assert_(math.isnan(math.pow(2, NAN)))
self.assert_(math.isnan(math.pow(0, NAN)))
self.assertEqual(math.pow(1, NAN), 1)
- self.assertEqual(1**NAN, 1)
- self.assertEqual(1**INF, 1)
- self.assertEqual(1**NINF, 1)
- self.assertEqual(1**0, 1)
- self.assertEqual(1.**NAN, 1)
- self.assertEqual(1.**INF, 1)
- self.assertEqual(1.**NINF, 1)
- self.assertEqual(1.**0, 1)
+
+ # pow(0., x)
+ self.assertEqual(math.pow(0., INF), 0.)
+ self.assertEqual(math.pow(0., 3.), 0.)
+ self.assertEqual(math.pow(0., 2.3), 0.)
+ self.assertEqual(math.pow(0., 2.), 0.)
+ self.assertEqual(math.pow(0., 0.), 1.)
+ self.assertEqual(math.pow(0., -0.), 1.)
+ self.assertRaises(ValueError, math.pow, 0., -2.)
+ self.assertRaises(ValueError, math.pow, 0., -2.3)
+ self.assertRaises(ValueError, math.pow, 0., -3.)
+ self.assertRaises(ValueError, math.pow, 0., NINF)
+ self.assert_(math.isnan(math.pow(0., NAN)))
+
+ # pow(INF, x)
+ self.assertEqual(math.pow(INF, INF), INF)
+ self.assertEqual(math.pow(INF, 3.), INF)
+ self.assertEqual(math.pow(INF, 2.3), INF)
+ self.assertEqual(math.pow(INF, 2.), INF)
+ self.assertEqual(math.pow(INF, 0.), 1.)
+ self.assertEqual(math.pow(INF, -0.), 1.)
+ self.assertEqual(math.pow(INF, -2.), 0.)
+ self.assertEqual(math.pow(INF, -2.3), 0.)
+ self.assertEqual(math.pow(INF, -3.), 0.)
+ self.assertEqual(math.pow(INF, NINF), 0.)
+ self.assert_(math.isnan(math.pow(INF, NAN)))
+
+ # pow(-0., x)
+ self.assertEqual(math.pow(-0., INF), 0.)
+ self.assertEqual(math.pow(-0., 3.), -0.)
+ self.assertEqual(math.pow(-0., 2.3), 0.)
+ self.assertEqual(math.pow(-0., 2.), 0.)
+ self.assertEqual(math.pow(-0., 0.), 1.)
+ self.assertEqual(math.pow(-0., -0.), 1.)
+ self.assertRaises(ValueError, math.pow, -0., -2.)
+ self.assertRaises(ValueError, math.pow, -0., -2.3)
+ self.assertRaises(ValueError, math.pow, -0., -3.)
+ self.assertRaises(ValueError, math.pow, -0., NINF)
+ self.assert_(math.isnan(math.pow(-0., NAN)))
+
+ # pow(NINF, x)
+ self.assertEqual(math.pow(NINF, INF), INF)
+ self.assertEqual(math.pow(NINF, 3.), NINF)
+ self.assertEqual(math.pow(NINF, 2.3), INF)
+ self.assertEqual(math.pow(NINF, 2.), INF)
+ self.assertEqual(math.pow(NINF, 0.), 1.)
+ self.assertEqual(math.pow(NINF, -0.), 1.)
+ self.assertEqual(math.pow(NINF, -2.), 0.)
+ self.assertEqual(math.pow(NINF, -2.3), 0.)
+ self.assertEqual(math.pow(NINF, -3.), -0.)
+ self.assertEqual(math.pow(NINF, NINF), 0.)
+ self.assert_(math.isnan(math.pow(NINF, NAN)))
+
+ # pow(-1, x)
+ self.assertEqual(math.pow(-1., INF), 1.)
+ self.assertEqual(math.pow(-1., 3.), -1.)
+ self.assertRaises(ValueError, math.pow, -1., 2.3)
+ self.assertEqual(math.pow(-1., 2.), 1.)
+ self.assertEqual(math.pow(-1., 0.), 1.)
+ self.assertEqual(math.pow(-1., -0.), 1.)
+ self.assertEqual(math.pow(-1., -2.), 1.)
+ self.assertRaises(ValueError, math.pow, -1., -2.3)
+ self.assertEqual(math.pow(-1., -3.), -1.)
+ self.assertEqual(math.pow(-1., NINF), 1.)
+ self.assert_(math.isnan(math.pow(-1., NAN)))
+
+ # pow(1, x)
+ self.assertEqual(math.pow(1., INF), 1.)
+ self.assertEqual(math.pow(1., 3.), 1.)
+ self.assertEqual(math.pow(1., 2.3), 1.)
+ self.assertEqual(math.pow(1., 2.), 1.)
+ self.assertEqual(math.pow(1., 0.), 1.)
+ self.assertEqual(math.pow(1., -0.), 1.)
+ self.assertEqual(math.pow(1., -2.), 1.)
+ self.assertEqual(math.pow(1., -2.3), 1.)
+ self.assertEqual(math.pow(1., -3.), 1.)
+ self.assertEqual(math.pow(1., NINF), 1.)
+ self.assertEqual(math.pow(1., NAN), 1.)
+
+ # pow(x, 0) should be 1 for any x
+ self.assertEqual(math.pow(2.3, 0.), 1.)
+ self.assertEqual(math.pow(-2.3, 0.), 1.)
+ self.assertEqual(math.pow(NAN, 0.), 1.)
+ self.assertEqual(math.pow(2.3, -0.), 1.)
+ self.assertEqual(math.pow(-2.3, -0.), 1.)
+ self.assertEqual(math.pow(NAN, -0.), 1.)
+
+ # pow(x, y) is invalid if x is negative and y is not integral
+ self.assertRaises(ValueError, math.pow, -1., 2.3)
+ self.assertRaises(ValueError, math.pow, -15., -3.1)
+
+ # pow(x, NINF)
+ self.assertEqual(math.pow(1.9, NINF), 0.)
+ self.assertEqual(math.pow(1.1, NINF), 0.)
+ self.assertEqual(math.pow(0.9, NINF), INF)
+ self.assertEqual(math.pow(0.1, NINF), INF)
+ self.assertEqual(math.pow(-0.1, NINF), INF)
+ self.assertEqual(math.pow(-0.9, NINF), INF)
+ self.assertEqual(math.pow(-1.1, NINF), 0.)
+ self.assertEqual(math.pow(-1.9, NINF), 0.)
+
+ # pow(x, INF)
+ self.assertEqual(math.pow(1.9, INF), INF)
+ self.assertEqual(math.pow(1.1, INF), INF)
+ self.assertEqual(math.pow(0.9, INF), 0.)
+ self.assertEqual(math.pow(0.1, INF), 0.)
+ self.assertEqual(math.pow(-0.1, INF), 0.)
+ self.assertEqual(math.pow(-0.9, INF), 0.)
+ self.assertEqual(math.pow(-1.1, INF), INF)
+ self.assertEqual(math.pow(-1.9, INF), INF)
+
+ # pow(x, y) should work for x negative, y an integer
+ self.ftest('(-2.)**3.', math.pow(-2.0, 3.0), -8.0)
+ self.ftest('(-2.)**2.', math.pow(-2.0, 2.0), 4.0)
+ self.ftest('(-2.)**1.', math.pow(-2.0, 1.0), -2.0)
+ self.ftest('(-2.)**0.', math.pow(-2.0, 0.0), 1.0)
+ self.ftest('(-2.)**-0.', math.pow(-2.0, -0.0), 1.0)
+ self.ftest('(-2.)**-1.', math.pow(-2.0, -1.0), -0.5)
+ self.ftest('(-2.)**-2.', math.pow(-2.0, -2.0), 0.25)
+ self.ftest('(-2.)**-3.', math.pow(-2.0, -3.0), -0.125)
+ self.assertRaises(ValueError, math.pow, -2.0, -0.5)
+ self.assertRaises(ValueError, math.pow, -2.0, 0.5)
+
+ # the following tests have been commented out since they don't
+ # really belong here: the implementation of ** for floats is
+ # independent of the implemention of math.pow
+ #self.assertEqual(1**NAN, 1)
+ #self.assertEqual(1**INF, 1)
+ #self.assertEqual(1**NINF, 1)
+ #self.assertEqual(1**0, 1)
+ #self.assertEqual(1.**NAN, 1)
+ #self.assertEqual(1.**INF, 1)
+ #self.assertEqual(1.**NINF, 1)
+ #self.assertEqual(1.**0, 1)
def testRadians(self):
self.assertRaises(TypeError, math.radians)
@@ -417,7 +543,7 @@ class MathTests(unittest.TestCase):
self.ftest('sinh(1)**2-cosh(1)**2', math.sinh(1)**2-math.cosh(1)**2, -1)
self.ftest('sinh(1)+sinh(-1)', math.sinh(1)+math.sinh(-1), 0)
self.assertEquals(math.sinh(INF), INF)
- self.assertEquals(math.sinh(-INF), -INF)
+ self.assertEquals(math.sinh(NINF), NINF)
self.assert_(math.isnan(math.sinh(NAN)))
def testSqrt(self):
@@ -555,7 +681,12 @@ class MathTests(unittest.TestCase):
# no real versions of rect, polar
continue
func = getattr(math, fn)
- result = func(ar)
+ try:
+ result = func(ar)
+ except ValueError:
+ message = ("Unexpected ValueError in " +
+ "test %s:%s(%r)\n" % (id, fn, ar))
+ self.fail(message)
self.ftest("%s:%s(%r)" % (id, fn, ar), result, er)
def test_main():
diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index e6acce3..98a9e44 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -584,6 +584,29 @@ class ProcessTestCase(unittest.TestCase):
os.remove(fname)
self.assertEqual(rc, 47)
+ def test_send_signal(self):
+ p = subprocess.Popen([sys.executable,
+ "-c", "input()"])
+
+ self.assert_(p.poll() is None, p.poll())
+ p.send_signal(signal.SIGINT)
+ self.assertNotEqual(p.wait(), 0)
+
+ def test_kill(self):
+ p = subprocess.Popen([sys.executable,
+ "-c", "input()"])
+
+ self.assert_(p.poll() is None, p.poll())
+ p.kill()
+ self.assertEqual(p.wait(), -signal.SIGKILL)
+
+ def test_terminate(self):
+ p = subprocess.Popen([sys.executable,
+ "-c", "input()"])
+
+ self.assert_(p.poll() is None, p.poll())
+ p.terminate()
+ self.assertEqual(p.wait(), -signal.SIGTERM)
#
# Windows tests
@@ -655,6 +678,29 @@ class ProcessTestCase(unittest.TestCase):
' -c "import sys; sys.exit(47)"')
self.assertEqual(rc, 47)
+ def test_send_signal(self):
+ p = subprocess.Popen([sys.executable,
+ "-c", "input()"])
+
+ self.assert_(p.poll() is None, p.poll())
+ p.send_signal(signal.SIGTERM)
+ self.assertNotEqual(p.wait(), 0)
+
+ def test_kill(self):
+ p = subprocess.Popen([sys.executable,
+ "-c", "input()"])
+
+ self.assert_(p.poll() is None, p.poll())
+ p.kill()
+ self.assertNotEqual(p.wait(), 0)
+
+ def test_terminate(self):
+ p = subprocess.Popen([sys.executable,
+ "-c", "input()"])
+
+ self.assert_(p.poll() is None, p.poll())
+ p.terminate()
+ self.assertNotEqual(p.wait(), 0)
def test_main():
test_support.run_unittest(ProcessTestCase)
diff --git a/Modules/cmathmodule.c b/Modules/cmathmodule.c
index 8e3c31e..347f88d 100644
--- a/Modules/cmathmodule.c
+++ b/Modules/cmathmodule.c
@@ -107,16 +107,8 @@ special_type(double d)
#define P14 0.25*Py_MATH_PI
#define P12 0.5*Py_MATH_PI
#define P34 0.75*Py_MATH_PI
-#ifdef MS_WINDOWS
-/* On Windows HUGE_VAL is an extern variable and not a constant. Since the
- special value arrays need a constant we have to roll our own infinity
- and nan. */
-# define INF (DBL_MAX*DBL_MAX)
-# define N (INF*0.)
-#else
-# define INF Py_HUGE_VAL
-# define N Py_NAN
-#endif /* MS_WINDOWS */
+#define INF Py_HUGE_VAL
+#define N Py_NAN
#define U -9.5426319407711027e33 /* unlikely value, used as placeholder */
/* First, the C functions that do the real work. Each of the c_*
@@ -128,15 +120,7 @@ special_type(double d)
raised.
*/
-static Py_complex acos_special_values[7][7] = {
- {{P34,INF},{P,INF}, {P,INF}, {P,-INF}, {P,-INF}, {P34,-INF},{N,INF}},
- {{P12,INF},{U,U}, {U,U}, {U,U}, {U,U}, {P12,-INF},{N,N}},
- {{P12,INF},{U,U}, {P12,0.},{P12,-0.},{U,U}, {P12,-INF},{P12,N}},
- {{P12,INF},{U,U}, {P12,0.},{P12,-0.},{U,U}, {P12,-INF},{P12,N}},
- {{P12,INF},{U,U}, {U,U}, {U,U}, {U,U}, {P12,-INF},{N,N}},
- {{P14,INF},{0.,INF},{0.,INF},{0.,-INF},{0.,-INF},{P14,-INF},{N,INF}},
- {{N,INF}, {N,N}, {N,N}, {N,N}, {N,N}, {N,-INF}, {N,N}}
-};
+static Py_complex acos_special_values[7][7];
static Py_complex
c_acos(Py_complex z)
@@ -177,15 +161,7 @@ PyDoc_STRVAR(c_acos_doc,
"Return the arc cosine of x.");
-static Py_complex acosh_special_values[7][7] = {
- {{INF,-P34},{INF,-P}, {INF,-P}, {INF,P}, {INF,P}, {INF,P34},{INF,N}},
- {{INF,-P12},{U,U}, {U,U}, {U,U}, {U,U}, {INF,P12},{N,N}},
- {{INF,-P12},{U,U}, {0.,-P12},{0.,P12},{U,U}, {INF,P12},{N,N}},
- {{INF,-P12},{U,U}, {0.,-P12},{0.,P12},{U,U}, {INF,P12},{N,N}},
- {{INF,-P12},{U,U}, {U,U}, {U,U}, {U,U}, {INF,P12},{N,N}},
- {{INF,-P14},{INF,-0.},{INF,-0.},{INF,0.},{INF,0.},{INF,P14},{INF,N}},
- {{INF,N}, {N,N}, {N,N}, {N,N}, {N,N}, {INF,N}, {N,N}}
-};
+static Py_complex acosh_special_values[7][7];
static Py_complex
c_acosh(Py_complex z)
@@ -237,15 +213,7 @@ PyDoc_STRVAR(c_asin_doc,
"Return the arc sine of x.");
-static Py_complex asinh_special_values[7][7] = {
- {{-INF,-P14},{-INF,-0.},{-INF,-0.},{-INF,0.},{-INF,0.},{-INF,P14},{-INF,N}},
- {{-INF,-P12},{U,U}, {U,U}, {U,U}, {U,U}, {-INF,P12},{N,N}},
- {{-INF,-P12},{U,U}, {-0.,-0.}, {-0.,0.}, {U,U}, {-INF,P12},{N,N}},
- {{INF,-P12}, {U,U}, {0.,-0.}, {0.,0.}, {U,U}, {INF,P12}, {N,N}},
- {{INF,-P12}, {U,U}, {U,U}, {U,U}, {U,U}, {INF,P12}, {N,N}},
- {{INF,-P14}, {INF,-0.}, {INF,-0.}, {INF,0.}, {INF,0.}, {INF,P14}, {INF,N}},
- {{INF,N}, {N,N}, {N,-0.}, {N,0.}, {N,N}, {INF,N}, {N,N}}
-};
+static Py_complex asinh_special_values[7][7];
static Py_complex
c_asinh(Py_complex z)
@@ -323,15 +291,7 @@ PyDoc_STRVAR(c_atan_doc,
"Return the arc tangent of x.");
-static Py_complex atanh_special_values[7][7] = {
- {{-0.,-P12},{-0.,-P12},{-0.,-P12},{-0.,P12},{-0.,P12},{-0.,P12},{-0.,N}},
- {{-0.,-P12},{U,U}, {U,U}, {U,U}, {U,U}, {-0.,P12},{N,N}},
- {{-0.,-P12},{U,U}, {-0.,-0.}, {-0.,0.}, {U,U}, {-0.,P12},{-0.,N}},
- {{0.,-P12}, {U,U}, {0.,-0.}, {0.,0.}, {U,U}, {0.,P12}, {0.,N}},
- {{0.,-P12}, {U,U}, {U,U}, {U,U}, {U,U}, {0.,P12}, {N,N}},
- {{0.,-P12}, {0.,-P12}, {0.,-P12}, {0.,P12}, {0.,P12}, {0.,P12}, {0.,N}},
- {{0.,-P12}, {N,N}, {N,N}, {N,N}, {N,N}, {0.,P12}, {N,N}}
-};
+static Py_complex atanh_special_values[7][7];
static Py_complex
c_atanh(Py_complex z)
@@ -404,15 +364,7 @@ PyDoc_STRVAR(c_cos_doc,
/* cosh(infinity + i*y) needs to be dealt with specially */
-static Py_complex cosh_special_values[7][7] = {
- {{INF,N},{U,U},{INF,0.}, {INF,-0.},{U,U},{INF,N},{INF,N}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{N,0.}, {U,U},{1.,0.}, {1.,-0.}, {U,U},{N,0.}, {N,0.}},
- {{N,0.}, {U,U},{1.,-0.}, {1.,0.}, {U,U},{N,0.}, {N,0.}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{INF,N},{U,U},{INF,-0.},{INF,0.}, {U,U},{INF,N},{INF,N}},
- {{N,N}, {N,N},{N,0.}, {N,0.}, {N,N},{N,N}, {N,N}}
-};
+static Py_complex cosh_special_values[7][7];
static Py_complex
c_cosh(Py_complex z)
@@ -472,15 +424,7 @@ PyDoc_STRVAR(c_cosh_doc,
/* exp(infinity + i*y) and exp(-infinity + i*y) need special treatment for
finite y */
-static Py_complex exp_special_values[7][7] = {
- {{0.,0.},{U,U},{0.,-0.}, {0.,0.}, {U,U},{0.,0.},{0.,0.}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{N,N}, {U,U},{1.,-0.}, {1.,0.}, {U,U},{N,N}, {N,N}},
- {{N,N}, {U,U},{1.,-0.}, {1.,0.}, {U,U},{N,N}, {N,N}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{INF,N},{U,U},{INF,-0.},{INF,0.},{U,U},{INF,N},{INF,N}},
- {{N,N}, {N,N},{N,-0.}, {N,0.}, {N,N},{N,N}, {N,N}}
-};
+static Py_complex exp_special_values[7][7];
static Py_complex
c_exp(Py_complex z)
@@ -538,15 +482,7 @@ PyDoc_STRVAR(c_exp_doc,
"Return the exponential value e**x.");
-static Py_complex log_special_values[7][7] = {
- {{INF,-P34},{INF,-P}, {INF,-P}, {INF,P}, {INF,P}, {INF,P34}, {INF,N}},
- {{INF,-P12},{U,U}, {U,U}, {U,U}, {U,U}, {INF,P12}, {N,N}},
- {{INF,-P12},{U,U}, {-INF,-P}, {-INF,P}, {U,U}, {INF,P12}, {N,N}},
- {{INF,-P12},{U,U}, {-INF,-0.},{-INF,0.},{U,U}, {INF,P12}, {N,N}},
- {{INF,-P12},{U,U}, {U,U}, {U,U}, {U,U}, {INF,P12}, {N,N}},
- {{INF,-P14},{INF,-0.},{INF,-0.}, {INF,0.}, {INF,0.},{INF,P14}, {INF,N}},
- {{INF,N}, {N,N}, {N,N}, {N,N}, {N,N}, {INF,N}, {N,N}}
-};
+static Py_complex log_special_values[7][7];
static Py_complex
c_log(Py_complex z)
@@ -658,15 +594,7 @@ PyDoc_STRVAR(c_sin_doc,
/* sinh(infinity + i*y) needs to be dealt with specially */
-static Py_complex sinh_special_values[7][7] = {
- {{INF,N},{U,U},{-INF,-0.},{-INF,0.},{U,U},{INF,N},{INF,N}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{0.,N}, {U,U},{-0.,-0.}, {-0.,0.}, {U,U},{0.,N}, {0.,N}},
- {{0.,N}, {U,U},{0.,-0.}, {0.,0.}, {U,U},{0.,N}, {0.,N}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{INF,N},{U,U},{INF,-0.}, {INF,0.}, {U,U},{INF,N},{INF,N}},
- {{N,N}, {N,N},{N,-0.}, {N,0.}, {N,N},{N,N}, {N,N}}
-};
+static Py_complex sinh_special_values[7][7];
static Py_complex
c_sinh(Py_complex z)
@@ -723,15 +651,7 @@ PyDoc_STRVAR(c_sinh_doc,
"Return the hyperbolic sine of x.");
-static Py_complex sqrt_special_values[7][7] = {
- {{INF,-INF},{0.,-INF},{0.,-INF},{0.,INF},{0.,INF},{INF,INF},{N,INF}},
- {{INF,-INF},{U,U}, {U,U}, {U,U}, {U,U}, {INF,INF},{N,N}},
- {{INF,-INF},{U,U}, {0.,-0.}, {0.,0.}, {U,U}, {INF,INF},{N,N}},
- {{INF,-INF},{U,U}, {0.,-0.}, {0.,0.}, {U,U}, {INF,INF},{N,N}},
- {{INF,-INF},{U,U}, {U,U}, {U,U}, {U,U}, {INF,INF},{N,N}},
- {{INF,-INF},{INF,-0.},{INF,-0.},{INF,0.},{INF,0.},{INF,INF},{INF,N}},
- {{INF,-INF},{N,N}, {N,N}, {N,N}, {N,N}, {INF,INF},{N,N}}
-};
+static Py_complex sqrt_special_values[7][7];
static Py_complex
c_sqrt(Py_complex z)
@@ -826,15 +746,7 @@ PyDoc_STRVAR(c_tan_doc,
/* tanh(infinity + i*y) needs to be dealt with specially */
-static Py_complex tanh_special_values[7][7] = {
- {{-1.,0.},{U,U},{-1.,-0.},{-1.,0.},{U,U},{-1.,0.},{-1.,0.}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{N,N}, {U,U},{-0.,-0.},{-0.,0.},{U,U},{N,N}, {N,N}},
- {{N,N}, {U,U},{0.,-0.}, {0.,0.}, {U,U},{N,N}, {N,N}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{1.,0.}, {U,U},{1.,-0.}, {1.,0.}, {U,U},{1.,0.}, {1.,0.}},
- {{N,N}, {N,N},{N,-0.}, {N,0.}, {N,N},{N,N}, {N,N}}
-};
+static Py_complex tanh_special_values[7][7];
static Py_complex
c_tanh(Py_complex z)
@@ -1043,15 +955,7 @@ the distance from 0 and phi the phase angle.");
*/
-static Py_complex rect_special_values[7][7] = {
- {{INF,N},{U,U},{-INF,0.},{-INF,-0.},{U,U},{INF,N},{INF,N}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{0.,0.},{U,U},{-0.,0.}, {-0.,-0.}, {U,U},{0.,0.},{0.,0.}},
- {{0.,0.},{U,U},{0.,-0.}, {0.,0.}, {U,U},{0.,0.},{0.,0.}},
- {{N,N}, {U,U},{U,U}, {U,U}, {U,U},{N,N}, {N,N}},
- {{INF,N},{U,U},{INF,-0.},{INF,0.}, {U,U},{INF,N},{INF,N}},
- {{N,N}, {N,N},{N,0.}, {N,0.}, {N,N},{N,N}, {N,N}}
-};
+static Py_complex rect_special_values[7][7];
static PyObject *
cmath_rect(PyObject *self, PyObject *args)
@@ -1176,4 +1080,119 @@ initcmath(void)
PyModule_AddObject(m, "pi",
PyFloat_FromDouble(Py_MATH_PI));
PyModule_AddObject(m, "e", PyFloat_FromDouble(Py_MATH_E));
+
+ /* initialize special value tables */
+
+#define INIT_SPECIAL_VALUES(NAME, BODY) { Py_complex* p = (Py_complex*)NAME; BODY }
+#define C(REAL, IMAG) p->real = REAL; p->imag = IMAG; ++p;
+
+ INIT_SPECIAL_VALUES(acos_special_values, {
+ C(P34,INF) C(P,INF) C(P,INF) C(P,-INF) C(P,-INF) C(P34,-INF) C(N,INF)
+ C(P12,INF) C(U,U) C(U,U) C(U,U) C(U,U) C(P12,-INF) C(N,N)
+ C(P12,INF) C(U,U) C(P12,0.) C(P12,-0.) C(U,U) C(P12,-INF) C(P12,N)
+ C(P12,INF) C(U,U) C(P12,0.) C(P12,-0.) C(U,U) C(P12,-INF) C(P12,N)
+ C(P12,INF) C(U,U) C(U,U) C(U,U) C(U,U) C(P12,-INF) C(N,N)
+ C(P14,INF) C(0.,INF) C(0.,INF) C(0.,-INF) C(0.,-INF) C(P14,-INF) C(N,INF)
+ C(N,INF) C(N,N) C(N,N) C(N,N) C(N,N) C(N,-INF) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(acosh_special_values, {
+ C(INF,-P34) C(INF,-P) C(INF,-P) C(INF,P) C(INF,P) C(INF,P34) C(INF,N)
+ C(INF,-P12) C(U,U) C(U,U) C(U,U) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P12) C(U,U) C(0.,-P12) C(0.,P12) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P12) C(U,U) C(0.,-P12) C(0.,P12) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P12) C(U,U) C(U,U) C(U,U) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P14) C(INF,-0.) C(INF,-0.) C(INF,0.) C(INF,0.) C(INF,P14) C(INF,N)
+ C(INF,N) C(N,N) C(N,N) C(N,N) C(N,N) C(INF,N) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(asinh_special_values, {
+ C(-INF,-P14) C(-INF,-0.) C(-INF,-0.) C(-INF,0.) C(-INF,0.) C(-INF,P14) C(-INF,N)
+ C(-INF,-P12) C(U,U) C(U,U) C(U,U) C(U,U) C(-INF,P12) C(N,N)
+ C(-INF,-P12) C(U,U) C(-0.,-0.) C(-0.,0.) C(U,U) C(-INF,P12) C(N,N)
+ C(INF,-P12) C(U,U) C(0.,-0.) C(0.,0.) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P12) C(U,U) C(U,U) C(U,U) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P14) C(INF,-0.) C(INF,-0.) C(INF,0.) C(INF,0.) C(INF,P14) C(INF,N)
+ C(INF,N) C(N,N) C(N,-0.) C(N,0.) C(N,N) C(INF,N) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(atanh_special_values, {
+ C(-0.,-P12) C(-0.,-P12) C(-0.,-P12) C(-0.,P12) C(-0.,P12) C(-0.,P12) C(-0.,N)
+ C(-0.,-P12) C(U,U) C(U,U) C(U,U) C(U,U) C(-0.,P12) C(N,N)
+ C(-0.,-P12) C(U,U) C(-0.,-0.) C(-0.,0.) C(U,U) C(-0.,P12) C(-0.,N)
+ C(0.,-P12) C(U,U) C(0.,-0.) C(0.,0.) C(U,U) C(0.,P12) C(0.,N)
+ C(0.,-P12) C(U,U) C(U,U) C(U,U) C(U,U) C(0.,P12) C(N,N)
+ C(0.,-P12) C(0.,-P12) C(0.,-P12) C(0.,P12) C(0.,P12) C(0.,P12) C(0.,N)
+ C(0.,-P12) C(N,N) C(N,N) C(N,N) C(N,N) C(0.,P12) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(cosh_special_values, {
+ C(INF,N) C(U,U) C(INF,0.) C(INF,-0.) C(U,U) C(INF,N) C(INF,N)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(N,0.) C(U,U) C(1.,0.) C(1.,-0.) C(U,U) C(N,0.) C(N,0.)
+ C(N,0.) C(U,U) C(1.,-0.) C(1.,0.) C(U,U) C(N,0.) C(N,0.)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(INF,N) C(U,U) C(INF,-0.) C(INF,0.) C(U,U) C(INF,N) C(INF,N)
+ C(N,N) C(N,N) C(N,0.) C(N,0.) C(N,N) C(N,N) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(exp_special_values, {
+ C(0.,0.) C(U,U) C(0.,-0.) C(0.,0.) C(U,U) C(0.,0.) C(0.,0.)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(N,N) C(U,U) C(1.,-0.) C(1.,0.) C(U,U) C(N,N) C(N,N)
+ C(N,N) C(U,U) C(1.,-0.) C(1.,0.) C(U,U) C(N,N) C(N,N)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(INF,N) C(U,U) C(INF,-0.) C(INF,0.) C(U,U) C(INF,N) C(INF,N)
+ C(N,N) C(N,N) C(N,-0.) C(N,0.) C(N,N) C(N,N) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(log_special_values, {
+ C(INF,-P34) C(INF,-P) C(INF,-P) C(INF,P) C(INF,P) C(INF,P34) C(INF,N)
+ C(INF,-P12) C(U,U) C(U,U) C(U,U) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P12) C(U,U) C(-INF,-P) C(-INF,P) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P12) C(U,U) C(-INF,-0.) C(-INF,0.) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P12) C(U,U) C(U,U) C(U,U) C(U,U) C(INF,P12) C(N,N)
+ C(INF,-P14) C(INF,-0.) C(INF,-0.) C(INF,0.) C(INF,0.) C(INF,P14) C(INF,N)
+ C(INF,N) C(N,N) C(N,N) C(N,N) C(N,N) C(INF,N) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(sinh_special_values, {
+ C(INF,N) C(U,U) C(-INF,-0.) C(-INF,0.) C(U,U) C(INF,N) C(INF,N)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(0.,N) C(U,U) C(-0.,-0.) C(-0.,0.) C(U,U) C(0.,N) C(0.,N)
+ C(0.,N) C(U,U) C(0.,-0.) C(0.,0.) C(U,U) C(0.,N) C(0.,N)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(INF,N) C(U,U) C(INF,-0.) C(INF,0.) C(U,U) C(INF,N) C(INF,N)
+ C(N,N) C(N,N) C(N,-0.) C(N,0.) C(N,N) C(N,N) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(sqrt_special_values, {
+ C(INF,-INF) C(0.,-INF) C(0.,-INF) C(0.,INF) C(0.,INF) C(INF,INF) C(N,INF)
+ C(INF,-INF) C(U,U) C(U,U) C(U,U) C(U,U) C(INF,INF) C(N,N)
+ C(INF,-INF) C(U,U) C(0.,-0.) C(0.,0.) C(U,U) C(INF,INF) C(N,N)
+ C(INF,-INF) C(U,U) C(0.,-0.) C(0.,0.) C(U,U) C(INF,INF) C(N,N)
+ C(INF,-INF) C(U,U) C(U,U) C(U,U) C(U,U) C(INF,INF) C(N,N)
+ C(INF,-INF) C(INF,-0.) C(INF,-0.) C(INF,0.) C(INF,0.) C(INF,INF) C(INF,N)
+ C(INF,-INF) C(N,N) C(N,N) C(N,N) C(N,N) C(INF,INF) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(tanh_special_values, {
+ C(-1.,0.) C(U,U) C(-1.,-0.) C(-1.,0.) C(U,U) C(-1.,0.) C(-1.,0.)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(N,N) C(U,U) C(-0.,-0.) C(-0.,0.) C(U,U) C(N,N) C(N,N)
+ C(N,N) C(U,U) C(0.,-0.) C(0.,0.) C(U,U) C(N,N) C(N,N)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(1.,0.) C(U,U) C(1.,-0.) C(1.,0.) C(U,U) C(1.,0.) C(1.,0.)
+ C(N,N) C(N,N) C(N,-0.) C(N,0.) C(N,N) C(N,N) C(N,N)
+ })
+
+ INIT_SPECIAL_VALUES(rect_special_values, {
+ C(INF,N) C(U,U) C(-INF,0.) C(-INF,-0.) C(U,U) C(INF,N) C(INF,N)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(0.,0.) C(U,U) C(-0.,0.) C(-0.,-0.) C(U,U) C(0.,0.) C(0.,0.)
+ C(0.,0.) C(U,U) C(0.,-0.) C(0.,0.) C(U,U) C(0.,0.) C(0.,0.)
+ C(N,N) C(U,U) C(U,U) C(U,U) C(U,U) C(N,N) C(N,N)
+ C(INF,N) C(U,U) C(INF,-0.) C(INF,0.) C(U,U) C(INF,N) C(INF,N)
+ C(N,N) C(N,N) C(N,0.) C(N,0.) C(N,N) C(N,N) C(N,N)
+ })
}
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index 8c48316..19ed1b1 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -414,6 +414,15 @@ math_modf(PyObject *self, PyObject *arg)
double y, x = PyFloat_AsDouble(arg);
if (x == -1.0 && PyErr_Occurred())
return NULL;
+ /* some platforms don't do the right thing for NaNs and
+ infinities, so we take care of special cases directly. */
+ if (!Py_IS_FINITE(x)) {
+ if (Py_IS_INFINITY(x))
+ return Py_BuildValue("(dd)", copysign(0., x), x);
+ else if (Py_IS_NAN(x))
+ return Py_BuildValue("(dd)", x, x);
+ }
+
errno = 0;
PyFPE_START_PROTECT("in math_modf", return 0);
x = modf(x, &y);
@@ -586,6 +595,7 @@ math_pow(PyObject *self, PyObject *args)
{
PyObject *ox, *oy;
double r, x, y;
+ int odd_y;
if (! PyArg_UnpackTuple(args, "pow", 2, 2, &ox, &oy))
return NULL;
@@ -593,37 +603,62 @@ math_pow(PyObject *self, PyObject *args)
y = PyFloat_AsDouble(oy);
if ((x == -1.0 || y == -1.0) && PyErr_Occurred())
return NULL;
- /* 1**x and x**0 return 1., even if x is a NaN or infinity. */
- if (x == 1.0 || y == 0.0)
- return PyFloat_FromDouble(1.);
- errno = 0;
- PyFPE_START_PROTECT("in math_pow", return 0);
- r = pow(x, y);
- PyFPE_END_PROTECT(r);
- if (Py_IS_NAN(r)) {
- if (!Py_IS_NAN(x) && !Py_IS_NAN(y))
- errno = EDOM;
- else
- errno = 0;
- }
- /* an infinite result arises either from:
- (A) (+/-0.)**negative,
- (B) overflow of x**y with both x and y finite (and x nonzero)
- (C) (+/-inf)**positive, or
- (D) x**inf with |x| > 1, or x**-inf with |x| < 1.
-
- In case (A) we want ValueError to be raised. In case (B)
- OverflowError should be raised. In cases (C) and (D) the infinite
- result should be returned.
- */
- else if (Py_IS_INFINITY(r)) {
- if (x == 0.)
- errno = EDOM;
- else if (Py_IS_FINITE(x) && Py_IS_FINITE(y))
- errno = ERANGE;
- else
- errno = 0;
+ /* deal directly with IEEE specials, to cope with problems on various
+ platforms whose semantics don't exactly match C99 */
+ if (!Py_IS_FINITE(x) || !Py_IS_FINITE(y)) {
+ errno = 0;
+ if (Py_IS_NAN(x))
+ r = y == 0. ? 1. : x; /* NaN**0 = 1 */
+ else if (Py_IS_NAN(y))
+ r = x == 1. ? 1. : y; /* 1**NaN = 1 */
+ else if (Py_IS_INFINITY(x)) {
+ odd_y = Py_IS_FINITE(y) && fmod(fabs(y), 2.0) == 1.0;
+ if (y > 0.)
+ r = odd_y ? x : fabs(x);
+ else if (y == 0.)
+ r = 1.;
+ else /* y < 0. */
+ r = odd_y ? copysign(0., x) : 0.;
+ }
+ else if (Py_IS_INFINITY(y)) {
+ if (fabs(x) == 1.0)
+ r = 1.;
+ else if (y > 0. && fabs(x) > 1.0)
+ r = y;
+ else if (y < 0. && fabs(x) < 1.0) {
+ r = -y; /* result is +inf */
+ if (x == 0.) /* 0**-inf: divide-by-zero */
+ errno = EDOM;
+ }
+ else
+ r = 0.;
+ }
+ }
+ else {
+ /* let libm handle finite**finite */
+ errno = 0;
+ PyFPE_START_PROTECT("in math_pow", return 0);
+ r = pow(x, y);
+ PyFPE_END_PROTECT(r);
+ /* a NaN result should arise only from (-ve)**(finite
+ non-integer); in this case we want to raise ValueError. */
+ if (!Py_IS_FINITE(r)) {
+ if (Py_IS_NAN(r)) {
+ errno = EDOM;
+ }
+ /*
+ an infinite result here arises either from:
+ (A) (+/-0.)**negative (-> divide-by-zero)
+ (B) overflow of x**y with x and y finite
+ */
+ else if (Py_IS_INFINITY(r)) {
+ if (x == 0.)
+ errno = EDOM;
+ else
+ errno = ERANGE;
+ }
+ }
}
if (errno && is_error(r))
generated by cgit v0.12 at 2024-11-19 13:39:27 (GMT)