Mercurial > cpython-lru_cache-weakref
diff Objects/longobject.c @ 18500:e6ecd8a07ea8 legacy-trunk
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.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Thu, 12 Jul 2001 11:21:17 +0000 |
| parents | eff8da7c3dcb |
| children | b287f2927db3 |
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--- a/Objects/longobject.c Thu Jul 12 11:19:45 2001 +0000 +++ b/Objects/longobject.c Thu Jul 12 11:21:17 2001 +0000 @@ -1543,14 +1543,13 @@ 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) {