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