Simplified distributed block storage with strong consistency, like in Ceph
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#pragma once
#include <stdint.h>
// https://software.intel.com/sites/landingpage/IntrinsicsGuide/
// unsigned int _mm_crc32_u16 (unsigned int crc, unsigned short v)
// unsigned int _mm_crc32_u32 (unsigned int crc, unsigned int v)
// unsigned __int64 _mm_crc32_u64 (unsigned __int64 crc, unsigned __int64 v)
// unsigned int _mm_crc32_u8 (unsigned int crc, unsigned char v)
uint32_t crc32c(uint32_t crc, const void *buf, size_t len);