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| author | Mark Dickinson <dickinsm@gmail.com> | 2009-12-20 14:07:47 (GMT) |
|---|---|---|
| committer | Mark Dickinson <dickinsm@gmail.com> | 2009-12-20 14:07:47 (GMT) |
| commit | da39dbffb625b3c527d18de31a2a7bcbc7d1679c (patch) | |
| tree | 7b547e437c1378b1db57917ff56b80ccb6984a3e /Modules/mathmodule.c | |
| parent | a8f6f1e2d63b90549278b1162d264bb279459007 (diff) | |
| download | cpython-da39dbffb625b3c527d18de31a2a7bcbc7d1679c.zip cpython-da39dbffb625b3c527d18de31a2a7bcbc7d1679c.tar.gz cpython-da39dbffb625b3c527d18de31a2a7bcbc7d1679c.tar.bz2 | |
Merged revisions 76916 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r76916 | mark.dickinson | 2009-12-20 13:58:18 +0000 (Sun, 20 Dec 2009) | 3 lines
math.factorial depends on PyLong_AsLong correctly converting floats; rewrite
it to do the conversion explicitly instead. See issue #7550.
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Diffstat (limited to 'Modules/mathmodule.c')
| -rw-r--r-- | Modules/mathmodule.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c index f835005..92f5f42 100644 --- a/Modules/mathmodule.c +++ b/Modules/mathmodule.c @@ -1137,15 +1137,22 @@ math_factorial(PyObject *self, PyObject *arg) PyObject *result, *iobj, *newresult; if (PyFloat_Check(arg)) { + PyObject *lx; double dx = PyFloat_AS_DOUBLE((PyFloatObject *)arg); - if (dx != floor(dx)) { + if (!(Py_IS_FINITE(dx) && dx == floor(dx))) { PyErr_SetString(PyExc_ValueError, "factorial() only accepts integral values"); return NULL; } + lx = PyLong_FromDouble(dx); + if (lx == NULL) + return NULL; + x = PyLong_AsLong(lx); + Py_DECREF(lx); } + else + x = PyLong_AsLong(arg); - x = PyLong_AsLong(arg); if (x == -1 && PyErr_Occurred()) return NULL; if (x < 0) { |