Shipwright/ZAPDTR/ZAPD/CRC32.h

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#pragma once
static uint32_t CRC32B(const unsigned char* message, int32_t size)
{
int32_t byte, crc;
int32_t mask;
crc = 0xFFFFFFFF;
for (int32_t i = 0; i < size; i++)
{
byte = message[i];
crc = crc ^ byte;
for (int32_t j = 7; j >= 0; j--)
{
mask = -(crc & 1);
crc = (crc >> 1) ^ (0xEDB88320 & mask);
}
}
return ~(uint32_t)(crc);
}