bees: remove local cruft, throw at github

lib/crc64.cc

@@ -0,0 +1,59 @@
+#include "crucible/crc64.h"
+
+#define POLY64REV 0xd800000000000000ULL
+
+namespace crucible {
+
+	static bool init = false;
+	static uint64_t CRCTable[256];
+
+	static void init_crc64_table()
+	{
+		if (!init) {
+			for (int i = 0; i <= 255; i++) {
+				uint64_t part = i;
+				for (int j = 0; j < 8; j++) {
+					if (part & 1) {
+						part = (part >> 1) ^ POLY64REV;
+					} else {
+						part >>= 1;
+					}
+				}
+				CRCTable[i] = part;
+			}
+			init = true;
+		}
+	}
+
+	uint64_t
+	Digest::CRC::crc64(const char *s)
+	{
+		init_crc64_table();
+
+		uint64_t crc = 0;
+		for (; *s; s++) {
+			uint64_t temp1 = crc >> 8;
+			uint64_t temp2 = CRCTable[(crc ^ static_cast<uint64_t>(*s)) & 0xff];
+			crc = temp1 ^ temp2;
+		}
+
+		return crc;
+	}
+
+	uint64_t
+	Digest::CRC::crc64(const void *p, size_t len)
+	{
+		init_crc64_table();
+
+		uint64_t crc = 0;
+		for (const unsigned char *s = static_cast<const unsigned char *>(p); len; --len) {
+			uint64_t temp1 = crc >> 8;
+			uint64_t temp2 = CRCTable[(crc ^ *s++) & 0xff];
+			crc = temp1 ^ temp2;
+		}
+
+		return crc;
+	}
+
+
+};