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annotate src/core/ngx_crc.h @ 776:5622cdd48e5b

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style fix
author Igor Sysoev <igor@sysoev.ru>
date Fri, 13 Oct 2006 15:09:25 +0000
parents bbd6b0b4a2b1
children 604f9671fae6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev
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4 */
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267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
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7 #ifndef _NGX_CRC_H_INCLUDED_
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8 #define _NGX_CRC_H_INCLUDED_
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11 /* 32-bit crc16 */
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12
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13 static ngx_inline uint32_t
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14 ngx_crc(char *data, size_t len)
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15 {
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16 uint32_t sum;
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0b67be7d4489 nginx-0.0.1-2003-12-08-23:48:12 import
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18 for (sum = 0; len; len--) {
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20 /*
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21 * gcc 2.95.2 x86 and icc 7.1.006 compile
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22 * that operator into the single "rol" opcode,
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23 * msvc 6.0sp2 compiles it into four opcodes.
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24 */
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25 sum = sum >> 1 | sum << 31;
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27 sum += *data++;
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28 }
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30 return sum;
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31 }
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34 #endif /* _NGX_CRC_H_INCLUDED_ */