If the exponent of {TAIL ~ the first operand} is larger than {HEAD ~ the exponent} of the second operand, the mantissa of the second operand which is currently stored in MQ register 13 is transferred to the B register 11 
If the exponent of { TAIL ~ the first operand } is larger than { HEAD ~ the exponent } of the second operand , the mantissa of the second operand which is currently stored in MQ register 13 is transferred to the B register 11
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH