Mercurial > hg > nginx
annotate src/core/ngx_crc.h @ 9232:9a0849fd4b46
MIME: changed type for deb files, added udeb files.
Changed type for .deb files to application/vnd.debian.binary-package
in accordance with man pages [1] and IANA [2]. Also added .udeb extension.
This type is also used on update servers.
Link for reference:
[1] https://manpages.debian.org/bookworm/dpkg-dev/deb.5.en.html
[2] https://www.iana.org/assignments/media-types/application/vnd.debian.binary-package
author | Yuriy Izorkin <lafiel@elven.pw> |
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date | Tue, 26 Mar 2024 21:30:08 +0300 |
parents | d620f497c50f |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #ifndef _NGX_CRC_H_INCLUDED_ |
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9 #define _NGX_CRC_H_INCLUDED_ |
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792 | 12 #include <ngx_config.h> |
13 #include <ngx_core.h> | |
14 | |
15 | |
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16 /* 32-bit crc16 */ |
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17 |
776 | 18 static ngx_inline uint32_t |
789 | 19 ngx_crc(u_char *data, size_t len) |
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20 { |
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21 uint32_t sum; |
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23 for (sum = 0; len; len--) { |
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25 /* |
776 | 26 * gcc 2.95.2 x86 and icc 7.1.006 compile |
27 * that operator into the single "rol" opcode, | |
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28 * msvc 6.0sp2 compiles it into four opcodes. |
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29 */ |
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30 sum = sum >> 1 | sum << 31; |
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31 |
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32 sum += *data++; |
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33 } |
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34 |
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35 return sum; |
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36 } |
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37 |
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38 |
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39 #endif /* _NGX_CRC_H_INCLUDED_ */ |