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authorAnton Samokhvalov <pg83@yandex.ru>2022-02-10 16:45:15 +0300
committerDaniil Cherednik <dcherednik@yandex-team.ru>2022-02-10 16:45:15 +0300
commit72cb13b4aff9bc9cf22e49251bc8fd143f82538f (patch)
treeda2c34829458c7d4e74bdfbdf85dff449e9e7fb8 /library/cpp/digest/old_crc/crc.h
parent778e51ba091dc39e7b7fcab2b9cf4dbedfb6f2b5 (diff)
downloadydb-72cb13b4aff9bc9cf22e49251bc8fd143f82538f.tar.gz
Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 1 of 2.
Diffstat (limited to 'library/cpp/digest/old_crc/crc.h')
-rw-r--r--library/cpp/digest/old_crc/crc.h84
1 files changed, 42 insertions, 42 deletions
diff --git a/library/cpp/digest/old_crc/crc.h b/library/cpp/digest/old_crc/crc.h
index 4a3ce6d05e..e7da8967a8 100644
--- a/library/cpp/digest/old_crc/crc.h
+++ b/library/cpp/digest/old_crc/crc.h
@@ -7,19 +7,19 @@
#define CRC64INIT ULL(0xFFFFFFFFFFFFFFFF)
// CCITT CRC-16
-inline ui16 crc16(const char* buf, size_t buflen, ui32 crcinit = CRC16INIT) {
+inline ui16 crc16(const char* buf, size_t buflen, ui32 crcinit = CRC16INIT) {
ui32 crc = 0xFFFF & ((crcinit >> 8) ^ (crcinit << 8));
- const char* end = buf + buflen;
- extern const ui32* crctab16;
+ const char* end = buf + buflen;
+ extern const ui32* crctab16;
while (buf < end) {
crc = (crc >> 8) ^ crctab16[(crc ^ *buf) & 0xFF];
++buf;
}
- return (ui16)(0xFFFF & ((crc >> 8) ^ (crc << 8)));
+ return (ui16)(0xFFFF & ((crc >> 8) ^ (crc << 8)));
}
-struct IdTR {
+struct IdTR {
Y_FORCE_INLINE static ui8 T(ui8 a) {
return a;
}
@@ -27,31 +27,31 @@ struct IdTR {
// CCITT CRC-32
template <class TR>
-inline ui32 crc32(const char* buf, size_t buflen, ui32 crcinit = CRC32INIT) {
+inline ui32 crc32(const char* buf, size_t buflen, ui32 crcinit = CRC32INIT) {
ui32 crc = crcinit ^ 0xFFFFFFFF;
- const char* end = buf + buflen;
- extern const ui32* crctab32;
+ const char* end = buf + buflen;
+ extern const ui32* crctab32;
- while (buf < end) {
+ while (buf < end) {
crc = (crc >> 8) ^ crctab32[(crc ^ TR::T((ui8)*buf)) & 0xFF];
++buf;
}
-
+
return crc ^ 0xFFFFFFFF;
}
-inline ui32 crc32(const char* buf, size_t buflen, ui32 crcinit = CRC32INIT) {
+inline ui32 crc32(const char* buf, size_t buflen, ui32 crcinit = CRC32INIT) {
return crc32<IdTR>(buf, buflen, crcinit);
}
-inline ui32 crc32(const void* buf, size_t buflen, ui32 crcinit = CRC32INIT) {
- return crc32((const char*)buf, buflen, crcinit);
+inline ui32 crc32(const void* buf, size_t buflen, ui32 crcinit = CRC32INIT) {
+ return crc32((const char*)buf, buflen, crcinit);
}
// Copyright (C) Sewell Development Corporation, 1994 - 1998.
-inline ui64 crc64(const void* buf, size_t buflen, ui64 crcinit = CRC64INIT) {
- const unsigned char* ptr = (const unsigned char*)buf;
- extern const ui64* crctab64;
+inline ui64 crc64(const void* buf, size_t buflen, ui64 crcinit = CRC64INIT) {
+ const unsigned char* ptr = (const unsigned char*)buf;
+ extern const ui64* crctab64;
while (buflen--) {
crcinit = crctab64[((crcinit >> 56) ^ *ptr++)] ^ (crcinit << 8);
@@ -59,32 +59,32 @@ inline ui64 crc64(const void* buf, size_t buflen, ui64 crcinit = CRC64INIT) {
return crcinit;
}
-namespace NCrcPrivate {
- template <unsigned N>
- struct TCrcHelper;
-
-#define DEF_CRC_FUNC(t) \
- template <> \
- struct TCrcHelper<t> { \
- static const ui##t Init = CRC##t##INIT; \
- static inline ui##t Crc(const void* buf, size_t buflen, ui##t crcinit) { \
- return crc##t((const char*)buf, buflen, crcinit); \
- } \
- };
-
- DEF_CRC_FUNC(16)
- DEF_CRC_FUNC(32)
- DEF_CRC_FUNC(64)
-
-#undef DEF_CRC_FUNC
-}
-
+namespace NCrcPrivate {
+ template <unsigned N>
+ struct TCrcHelper;
+
+#define DEF_CRC_FUNC(t) \
+ template <> \
+ struct TCrcHelper<t> { \
+ static const ui##t Init = CRC##t##INIT; \
+ static inline ui##t Crc(const void* buf, size_t buflen, ui##t crcinit) { \
+ return crc##t((const char*)buf, buflen, crcinit); \
+ } \
+ };
+
+ DEF_CRC_FUNC(16)
+ DEF_CRC_FUNC(32)
+ DEF_CRC_FUNC(64)
+
+#undef DEF_CRC_FUNC
+}
+
template <class T>
-static inline T Crc(const void* buf, size_t len, T init) {
- return (T)NCrcPrivate::TCrcHelper<8 * sizeof(T)>::Crc(buf, len, init);
+static inline T Crc(const void* buf, size_t len, T init) {
+ return (T)NCrcPrivate::TCrcHelper<8 * sizeof(T)>::Crc(buf, len, init);
}
-template <class T>
-static inline T Crc(const void* buf, size_t len) {
- return Crc<T>(buf, len, (T)NCrcPrivate::TCrcHelper<8 * sizeof(T)>::Init);
-}
+template <class T>
+static inline T Crc(const void* buf, size_t len) {
+ return Crc<T>(buf, len, (T)NCrcPrivate::TCrcHelper<8 * sizeof(T)>::Init);
+}