taler_utils.rs (1380B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022-2025 Taler Systems SA 4 5 TALER is free software; you can redistribute it and/or modify it under the 6 terms of the GNU Affero General Public License as published by the Free Software 7 Foundation; either version 3, or (at your option) any later version. 8 9 TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. 12 13 You should have received a copy of the GNU Affero General Public License along with 14 TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 */ 16 //! Utils function to convert taler API types to bitcoin API types 17 18 use bitcoin::{Amount as BtcAmount, SignedAmount}; 19 use taler_common::types::amount::{Amount, Currency, FRAC_BASE}; 20 21 /// Transform a btc amount into a taler amount 22 pub fn btc_to_taler(amount: &SignedAmount, currency: &Currency) -> Amount { 23 let unsigned = amount.abs().to_unsigned().unwrap(); 24 let sat = unsigned.to_sat(); 25 Amount::new(currency, sat / 100_000_000, (sat % 100_000_000) as u32) 26 } 27 28 /// Transform a taler amount into a btc amount 29 pub fn taler_to_btc(amount: &Amount) -> BtcAmount { 30 let sat = amount.val * FRAC_BASE as u64 + amount.frac as u64; 31 BtcAmount::from_sat(sat) 32 }