Split multibyte variable to an array of bytes

// Splits a multi-byte variable, into single bytes stored in a buffer.
void split_to_bytes(size_t value_To_Split, uint8_t * pBuf, uint8_t length)
{
  uint64_t mask = 0xFF; // Mask used for getting the byte

  for(int i=0; i<length; i++) // Loop through the larger variable
  {
    pBuf += i;
    *pBuf = value_To_Split & mask; // Apply the mask to the value, and store it in the buffer
    value_To_Split = value_To_Split >> 8; // Rightshift the value one byte to the right, and loop through again.
  }
}