Function calculate_crc 

pub fn calculate_crc(data: &[u8], input_crc: u32, crc_type: CrcType) -> u32

Calculates a cyclic redundancy check (CRC) on a block of memory.

This routine can be used to calculate a CRC on contiguous or non-contiguous blocks of memory.

Arguments

• data: A slice of bytes to calculate the CRC over.
• input_crc: A starting value for the CRC calculation. For non-contiguous blocks, this should be the result of a previous call to this function. For a new calculation, this should typically be 0.
• crc_type: The CRC algorithm to use.