Function arraydescr_richcompare

numpy/core/src/multiarray/descriptor.c:3403–3443

}

static PyObject *
arraydescr_richcompare(PyArray_Descr *self, PyObject *other, int cmp_op)
{
    PyArray_Descr *new = _convert_from_any(other, 0);
    if (new == NULL) {
        /* Cannot convert `other` to dtype */
        PyErr_Clear();
        Py_RETURN_NOTIMPLEMENTED;
    }

    npy_bool ret;
    switch (cmp_op) {
    case Py_LT:
        ret = !PyArray_EquivTypes(self, new) && PyArray_CanCastTo(self, new);
        Py_DECREF(new);
        return PyBool_FromLong(ret);
    case Py_LE:
        ret = PyArray_CanCastTo(self, new);
        Py_DECREF(new);
        return PyBool_FromLong(ret);
    case Py_EQ:
        ret = PyArray_EquivTypes(self, new);
        Py_DECREF(new);
        return PyBool_FromLong(ret);
    case Py_NE:
        ret = !PyArray_EquivTypes(self, new);
        Py_DECREF(new);
        return PyBool_FromLong(ret);
    case Py_GT:
        ret = !PyArray_EquivTypes(self, new) && PyArray_CanCastTo(new, self);
        Py_DECREF(new);
        return PyBool_FromLong(ret);
    case Py_GE:
        ret = PyArray_CanCastTo(new, self);
        Py_DECREF(new);
        return PyBool_FromLong(ret);
    default:
        Py_DECREF(new);
        Py_RETURN_NOTIMPLEMENTED;
    }
}

static int
descr_nonzero(PyObject *NPY_UNUSED(self))