How to check a CRC

Question

I get 9 bytes per serial where the last two are CRC-16, I need to check this CRC to know if I received the block correctly.

buffer[0] = 0x2E;
buffer[1] = 0x83;
buffer[2] = 0x82;
buffer[3] = 0x00;
buffer[4] = 0x00;
buffer[5] = 0x00;
buffer[6] = 0x00;
buffer[7] = 0xA9; //CRC-16, LSB
buffer[8] = 0xEF; //CRC-16, MSB

I’m trying to do a function to check and return 0 or 1 but I’m having trouble moving the bits dealing with values in Hex (rsr beginner thing)

The algorithm for this is to go making a XOR of the first 16 bits with 0x8005 (in the case of a CRC-16) ?

Include crc16.h can do this?