mirror of
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44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
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// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Stuff that exists in std, but we can't use due to being a dependency
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// of net, for go/build deps_test policy reasons.
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package netip
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func stringsLastIndexByte(s string, b byte) int {
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for i := len(s) - 1; i >= 0; i-- {
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if s[i] == b {
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return i
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}
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}
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return -1
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}
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func beUint64(b []byte) uint64 {
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_ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
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return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
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uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
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}
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func bePutUint64(b []byte, v uint64) {
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_ = b[7] // early bounds check to guarantee safety of writes below
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b[0] = byte(v >> 56)
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b[1] = byte(v >> 48)
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b[2] = byte(v >> 40)
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b[3] = byte(v >> 32)
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b[4] = byte(v >> 24)
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b[5] = byte(v >> 16)
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b[6] = byte(v >> 8)
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b[7] = byte(v)
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}
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func bePutUint32(b []byte, v uint32) {
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_ = b[3] // early bounds check to guarantee safety of writes below
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b[0] = byte(v >> 24)
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b[1] = byte(v >> 16)
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b[2] = byte(v >> 8)
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b[3] = byte(v)
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}
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