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author | sergey <sergey@yandex-team.ru> | 2022-02-10 16:47:29 +0300 |
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committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:47:29 +0300 |
commit | 05f59b2581f074c756adaee6b260014ac3a0c3ec (patch) | |
tree | 9814fbd1c3effac9b8377c5d604b367b14e2db55 /library/cpp/digest/old_crc/gencrc | |
parent | 5d8d1af4df7f9cd4acc021f069546c30677e7979 (diff) | |
download | ydb-05f59b2581f074c756adaee6b260014ac3a0c3ec.tar.gz |
Restoring authorship annotation for <sergey@yandex-team.ru>. Commit 2 of 2.
Diffstat (limited to 'library/cpp/digest/old_crc/gencrc')
-rw-r--r-- | library/cpp/digest/old_crc/gencrc/main.cpp | 50 |
1 files changed, 25 insertions, 25 deletions
diff --git a/library/cpp/digest/old_crc/gencrc/main.cpp b/library/cpp/digest/old_crc/gencrc/main.cpp index 657ec2e45e..d5821304ce 100644 --- a/library/cpp/digest/old_crc/gencrc/main.cpp +++ b/library/cpp/digest/old_crc/gencrc/main.cpp @@ -1,20 +1,20 @@ #include <util/stream/output.h> - -#define POLY_16 0x1021 -#define POLY_32 0xEDB88320UL + +#define POLY_16 0x1021 +#define POLY_32 0xEDB88320UL #define POLY_64 ULL(0xE543279765927881) - + static void crc16init() { ui32 CRCTAB16[256]; - ui32 crc; - int i, j; - + ui32 crc; + int i, j; + for (i = 0; i < 256; CRCTAB16[i++] = 0xFFFF & ((crc << 8) ^ (crc >> 8))) - for (crc = i, j = 8; j > 0; j--) - if (crc & 1) - crc = (crc >> 1) ^ POLY_16; - else - crc >>= 1; + for (crc = i, j = 8; j > 0; j--) + if (crc & 1) + crc = (crc >> 1) ^ POLY_16; + else + crc >>= 1; for (size_t k = 0; k < 256; ++k) { Cout << " ULL(" << CRCTAB16[k] << ")"; @@ -23,19 +23,19 @@ static void crc16init() { Cout << ",\n"; } } -} - +} + static void crc32init() { ui32 CRCTAB32[256]; - ui32 crc; - int i, j; - - for (i = 0; i < 256; CRCTAB32[i++] = crc) - for (crc = i, j = 8; j > 0; j--) - if (crc & 1) - crc = (crc >> 1) ^ POLY_32; - else - crc >>= 1; + ui32 crc; + int i, j; + + for (i = 0; i < 256; CRCTAB32[i++] = crc) + for (crc = i, j = 8; j > 0; j--) + if (crc & 1) + crc = (crc >> 1) ^ POLY_32; + else + crc >>= 1; for (size_t k = 0; k < 256; ++k) { Cout << " ULL(" << CRCTAB32[k] << ")"; @@ -44,8 +44,8 @@ static void crc32init() { Cout << ",\n"; } } -} - +} + int main() { Cout << "static const ui32 CRCTAB16[] = {\n\n"; crc16init(); |