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- // Copyright 2019 The Go Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- //go:build go1.13
- // +build go1.13
- package poly1305
- import "math/bits"
- func bitsAdd64(x, y, carry uint64) (sum, carryOut uint64) {
- return bits.Add64(x, y, carry)
- }
- func bitsSub64(x, y, borrow uint64) (diff, borrowOut uint64) {
- return bits.Sub64(x, y, borrow)
- }
- func bitsMul64(x, y uint64) (hi, lo uint64) {
- return bits.Mul64(x, y)
- }
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