Mercurial > hg > nginx
view src/core/ngx_crc.h @ 9310:ebebc1d68046
Core: changed ngx_buf_tag_t to uintptr_t.
There is no real difference, but "void *" as previously used results
in "ISO C forbids conversion of function pointer to object pointer type"
warnings with -Wpedantic when a function pointer is used as a tag.
Changing the type to uintptr_t makes the conversion always valid, since
any pointer type can be converted to an integer type.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 07 Aug 2024 03:56:26 +0300 |
parents | d620f497c50f |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_CRC_H_INCLUDED_ #define _NGX_CRC_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> /* 32-bit crc16 */ static ngx_inline uint32_t ngx_crc(u_char *data, size_t len) { uint32_t sum; for (sum = 0; len; len--) { /* * gcc 2.95.2 x86 and icc 7.1.006 compile * that operator into the single "rol" opcode, * msvc 6.0sp2 compiles it into four opcodes. */ sum = sum >> 1 | sum << 31; sum += *data++; } return sum; } #endif /* _NGX_CRC_H_INCLUDED_ */