Function add_loop

numpy/core/src/umath/string_ufuncs.cpp:195–213

* This function replaces the strided loop with the passed in one, * and registers it with the given ufunc. */

 * and registers it with the given ufunc.
 */
static int
add_loop(PyObject *umath, const char *ufunc_name,
         PyArrayMethod_Spec *spec, PyArrayMethod_StridedLoop *loop)
{
    PyObject *name = PyUnicode_FromString(ufunc_name);
    if (name == nullptr) {
        return -1;
    }
    PyObject *ufunc = PyObject_GetItem(umath, name);
    Py_DECREF(name);
    if (ufunc == nullptr) {
        return -1;
    }
    spec->slots[0].pfunc = (void *)loop;

    int res = PyUFunc_AddLoopFromSpec(ufunc, spec);
    Py_DECREF(ufunc);
    return res;
}


template<bool rstrip, typename character, COMP...>