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On path with known exact float, extract the double with the fast macro. (GH-21072)

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Raymond Hettinger 2020-06-23 11:45:25 -07:00 • committed by GitHub
parent fe2a48c605
commit 930f4518ae
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1 changed files with 10 additions and 5 deletions
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13
Modules/mathmodule.c
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@ -1256,9 +1256,15 @@ static PyObject *
math_floor(PyObject *module, PyObject *number) math_floor(PyObject *module, PyObject *number)
/*[clinic end generated code: output=c6a65c4884884b8a input=63af6b5d7ebcc3d6]*/ /*[clinic end generated code: output=c6a65c4884884b8a input=63af6b5d7ebcc3d6]*/
{ {
double x;
_Py_IDENTIFIER(__floor__); _Py_IDENTIFIER(__floor__);
if (!PyFloat_CheckExact(number)) { if (PyFloat_CheckExact(number)) {
x = PyFloat_AS_DOUBLE(number);
}
else
{
PyObject *method = _PyObject_LookupSpecial(number, &PyId___floor__); PyObject *method = _PyObject_LookupSpecial(number, &PyId___floor__);
if (method != NULL) { if (method != NULL) {
PyObject *result = _PyObject_CallNoArg(method); PyObject *result = _PyObject_CallNoArg(method);
@ -1267,11 +1273,10 @@ math_floor(PyObject *module, PyObject *number)
} }
if (PyErr_Occurred()) if (PyErr_Occurred())
return NULL; return NULL;
} x = PyFloat_AsDouble(number);
double x = PyFloat_AsDouble(number);
if (x == -1.0 && PyErr_Occurred()) if (x == -1.0 && PyErr_Occurred())
return NULL; return NULL;
}
return PyLong_FromDouble(floor(x)); return PyLong_FromDouble(floor(x));
} }