nautilus_model/ffi/types/
quantity.rs

1// -------------------------------------------------------------------------------------------------
2//  Copyright (C) 2015-2026 Nautech Systems Pty Ltd. All rights reserved.
3//  https://nautechsystems.io
4//
5//  Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
6//  You may not use this file except in compliance with the License.
7//  You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
8//
9//  Unless required by applicable law or agreed to in writing, software
10//  distributed under the License is distributed on an "AS IS" BASIS,
11//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12//  See the License for the specific language governing permissions and
13//  limitations under the License.
14// -------------------------------------------------------------------------------------------------
15
16use crate::types::quantity::{Quantity, QuantityRaw};
17
18/// Creates a new [`Quantity`] instance for FFI.
19///
20/// # Panics
21///
22/// Panics if a correctness check fails. See [`Quantity::new`] for more details.
23#[unsafe(no_mangle)]
24#[cfg_attr(feature = "high-precision", allow(improper_ctypes_definitions))]
25pub extern "C" fn quantity_new(value: f64, precision: u8) -> Quantity {
26    Quantity::new(value, precision)
27}
28
29#[unsafe(no_mangle)]
30#[cfg_attr(feature = "high-precision", allow(improper_ctypes_definitions))]
31pub extern "C" fn quantity_from_raw(raw: QuantityRaw, precision: u8) -> Quantity {
32    Quantity::from_raw(raw, precision)
33}
34
35#[unsafe(no_mangle)]
36pub extern "C" fn quantity_as_f64(qty: &Quantity) -> f64 {
37    qty.as_f64()
38}
39
40#[unsafe(no_mangle)]
41#[cfg_attr(feature = "high-precision", allow(improper_ctypes_definitions))]
42pub extern "C" fn quantity_saturating_sub(a: Quantity, b: Quantity) -> Quantity {
43    a.saturating_sub(b)
44}
nautilus_model/ffi/types/quantity.rs

nautilus_model/ffi/types/
quantity.rs
