Function element_argmax

methods/array_ops/src/pg_gp/array_ops.c:1327–1340

* Return max(element, index). */

 * Return max(element, index).
 */
static
inline
void*
element_argmax(Datum element, Oid elt_type, int elt_index, void *result) {
    Assert(result);
    value_index *vi = (value_index *)result;
    float8 elt = datum_float8_cast(element, elt_type);
    if (elt > vi->value) {
        vi->value = elt;
        vi->index = elt_index;
    }

    return vi;
}

/*
 * Return min(element, index).