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- // Copyright 2021 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.
- // Stuff that exists in std, but we can't use due to being a dependency
- // of net, for go/build deps_test policy reasons.
- package netip
- func stringsLastIndexByte(s string, b byte) int {
- for i := len(s) - 1; i >= 0; i-- {
- if s[i] == b {
- return i
- }
- }
- return -1
- }
- func beUint64(b []byte) uint64 {
- _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
- return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
- uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
- }
- func bePutUint64(b []byte, v uint64) {
- _ = b[7] // early bounds check to guarantee safety of writes below
- b[0] = byte(v >> 56)
- b[1] = byte(v >> 48)
- b[2] = byte(v >> 40)
- b[3] = byte(v >> 32)
- b[4] = byte(v >> 24)
- b[5] = byte(v >> 16)
- b[6] = byte(v >> 8)
- b[7] = byte(v)
- }
- func bePutUint32(b []byte, v uint32) {
- _ = b[3] // early bounds check to guarantee safety of writes below
- b[0] = byte(v >> 24)
- b[1] = byte(v >> 16)
- b[2] = byte(v >> 8)
- b[3] = byte(v)
- }
- func leUint16(b []byte) uint16 {
- _ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
- return uint16(b[0]) | uint16(b[1])<<8
- }
- func lePutUint16(b []byte, v uint16) {
- _ = b[1] // early bounds check to guarantee safety of writes below
- b[0] = byte(v)
- b[1] = byte(v >> 8)
- }
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