Function PyArray_Correlate

numpy/core/src/multiarray/multiarraymodule.c:1463–1507

NUMPY_API * Numeric.correlate(a1,a2,mode) */

 * Numeric.correlate(a1,a2,mode)
 */
NPY_NO_EXPORT PyObject *
PyArray_Correlate(PyObject *op1, PyObject *op2, int mode)
{
    PyArrayObject *ap1, *ap2, *ret = NULL;
    int typenum;
    int unused;
    PyArray_Descr *typec;

    typenum = PyArray_ObjectType(op1, NPY_NOTYPE);
    if (typenum == NPY_NOTYPE) {
        return NULL;
    }
    typenum = PyArray_ObjectType(op2, typenum);
    if (typenum == NPY_NOTYPE) {
        return NULL;
    }

    typec = PyArray_DescrFromType(typenum);
    Py_INCREF(typec);
    ap1 = (PyArrayObject *)PyArray_FromAny(op1, typec, 1, 1,
                                            NPY_ARRAY_DEFAULT, NULL);
    if (ap1 == NULL) {
        Py_DECREF(typec);
        return NULL;
    }
    ap2 = (PyArrayObject *)PyArray_FromAny(op2, typec, 1, 1,
                                           NPY_ARRAY_DEFAULT, NULL);
    if (ap2 == NULL) {
        goto fail;
    }

    ret = _pyarray_correlate(ap1, ap2, typenum, mode, &unused);
    if (ret == NULL) {
        goto fail;
    }
    Py_DECREF(ap1);
    Py_DECREF(ap2);
    return (PyObject *)ret;

fail:
    Py_XDECREF(ap1);
    Py_XDECREF(ap2);
    Py_XDECREF(ret);
    return NULL;
}

static PyObject *
array_putmask(PyObject *NPY_UNUSED(module), PyObject *const *args,