1// Copyright 2019 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build go1.13
6// +build go1.13
7
8package poly1305
9
10import "math/bits"
11
12func bitsAdd64(x, y, carry uint64) (sum, carryOut uint64) {
13	return bits.Add64(x, y, carry)
14}
15
16func bitsSub64(x, y, borrow uint64) (diff, borrowOut uint64) {
17	return bits.Sub64(x, y, borrow)
18}
19
20func bitsMul64(x, y uint64) (hi, lo uint64) {
21	return bits.Mul64(x, y)
22}
23