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On long to the negative long power, let float handle it instead of 

raising an error.  This was one of the two issues that the VPython
folks were particularly problematic for their students.  (The other
one was integer division...)  This implements (my) SF patch #440487.
This commit is contained in:
Guido van Rossum 2001-07-12 11:21:17 +00:00
parent b82fedc7d8
commit 0ec9abaa2b
1 changed files with 7 additions and 8 deletions
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15
Objects/longobject.c
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@ -1543,14 +1543,13 @@ long_pow(PyObject *v, PyObject *w, PyObject *x)
size_b = b->ob_size;
if (size_b < 0) {
if (a->ob_size)
PyErr_SetString(PyExc_ValueError,
"long integer to a negative power");
else
PyErr_SetString(PyExc_ZeroDivisionError,
"zero to a negative power");
z = NULL;
goto error;
/* Return a float. This works because we know that
this calls float_pow() which converts its
arguments to double. */
Py_DECREF(a);
Py_DECREF(b);
Py_DECREF(c);
return PyFloat_Type.tp_as_number->nb_power(v, w, x);
}
z = (PyLongObject *)PyLong_FromLong(1L);
for (i = 0; i < size_b; ++i) {