Function float8_datum_cast

methods/array_ops/src/pg_gp/array_ops.c:1223–1249

}

static
inline
Datum
float8_datum_cast(float8 res, Oid result_type) {
    Datum result = Float8GetDatum(res);
    switch(result_type){
        case INT2OID:
            return DirectFunctionCall1(dtoi2, result); break;
        case INT4OID:
            return DirectFunctionCall1(dtoi4, result); break;
        case INT8OID:
            return DirectFunctionCall1(dtoi8, result); break;
        case FLOAT4OID:
            return DirectFunctionCall1(dtof, result); break;
        case FLOAT8OID:
            return result; break;
        case NUMERICOID:
            return DirectFunctionCall1(float8_numeric, result); break;
        default:
            ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
                            errmsg("type is not supported"),
                            errdetail("Arrays with element type %s are not supported.",
                                      format_type_be(result_type))));
            break;
    }
    return result;
}

/*
 *    Template for element-wise help functions