| Naveen Sampath | 04696f7 | 2022-06-13 15:19:14 +0530 | [diff] [blame^] | 1 | // Copyright 2021 The GoPacket Authors. All rights reserved. |
| 2 | // |
| 3 | // Use of this source code is governed by a BSD-style license that can be found |
| 4 | // in the LICENSE file in the root of the source tree. |
| 5 | |
| 6 | package layers |
| 7 | |
| 8 | type bitfield [1024]uint64 |
| 9 | |
| 10 | // set sets bit i in bitfield b to 1. |
| 11 | func (b *bitfield) set(i uint16) { |
| 12 | b[i>>6] |= (1 << (i & 0x3f)) |
| 13 | } |
| 14 | |
| 15 | // has reports whether bit i is set to 1 in bitfield b. |
| 16 | func (b *bitfield) has(i uint16) bool { |
| 17 | return b[i>>6]&(1<<(i&0x3f)) != 0 |
| 18 | } |