Mercurial > dovecot > original-hg > dovecot-1.2
changeset 8267:3d2736ece94a HEAD
Added crc32_[str_]more().
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Sun, 12 Oct 2008 14:40:08 +0300 |
| parents | 47edfe6ad295 |
| children | eb320fbb87f0 |
| files | src/lib/crc32.c src/lib/crc32.h |
| diffstat | 2 files changed, 13 insertions(+), 2 deletions(-) [+] |
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--- a/src/lib/crc32.c Sun Oct 12 14:17:51 2008 +0300 +++ b/src/lib/crc32.c Sun Oct 12 14:40:08 2008 +0300 @@ -60,8 +60,12 @@ uint32_t crc32_data(const void *data, size_t size) { + return crc32_data_more((uint32_t)-1, data, size); +} + +uint32_t crc32_data_more(uint32_t crc, const void *data, size_t size) +{ const uint8_t *p = data, *end = p + size; - uint32_t crc = (uint32_t)-1; for (; p != end; p++) crc = (crc >> 8) ^ crc32tab[((crc ^ *p) & 0xff)]; @@ -70,8 +74,12 @@ uint32_t crc32_str(const char *str) { + return crc32_str_more((uint32_t)-1, str); +} + +uint32_t crc32_str_more(uint32_t crc, const char *str) +{ const uint8_t *p = (const uint8_t *)str; - uint32_t crc = (uint32_t)-1; for (; *p != '\0'; p++) crc = (crc >> 8) ^ crc32tab[((crc ^ *p) & 0xff)];
--- a/src/lib/crc32.h Sun Oct 12 14:17:51 2008 +0300 +++ b/src/lib/crc32.h Sun Oct 12 14:40:08 2008 +0300 @@ -4,4 +4,7 @@ uint32_t crc32_data(const void *data, size_t size) ATTR_PURE; uint32_t crc32_str(const char *str) ATTR_PURE; +uint32_t crc32_data_more(uint32_t crc, const void *data, size_t size) ATTR_PURE; +uint32_t crc32_str_more(uint32_t crc, const char *str) ATTR_PURE; + #endif