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Implement the trunc builtin for PEP 3141

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Alex Martelli 2007-08-22 22:39:42 +00:00
parent a62b45c95d
commit 86d8b3497f
2 changed files with 36 additions and 0 deletions
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22
Python/bltinmodule.c
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@ -1486,6 +1486,27 @@ PyDoc_STRVAR(vars_doc,
Without arguments, equivalent to locals().\n\
With an argument, equivalent to object.__dict__.");
static PyObject *
builtin_trunc(PyObject *self, PyObject *v)
{
PyObject *res;
PyObject *d = PyObject_GetAttrString(v, "__trunc__");
if (d == NULL) {
PyErr_SetString(PyExc_TypeError,
"trunc() argument must have __trunc__ attribute");
return NULL;
}
res = PyObject_CallFunction(d, "");
Py_DECREF(d);
return res;
}
PyDoc_STRVAR(trunc_doc,
"trunc(Real) -> Integral\n\
\n\
returns the integral closest to x between 0 and x.");
static PyObject*
builtin_sum(PyObject *self, PyObject *args)
@ -1659,6 +1680,7 @@ static PyMethodDef builtin_methods[] = {
{"sorted", (PyCFunction)builtin_sorted, METH_VARARGS | METH_KEYWORDS, sorted_doc},
{"sum", builtin_sum, METH_VARARGS, sum_doc},
{"vars", builtin_vars, METH_VARARGS, vars_doc},
{"trunc", builtin_trunc, METH_O, trunc_doc},
{"zip", builtin_zip, METH_VARARGS, zip_doc},
{NULL, NULL},
};