Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 1 REV 2.3 Manual page 1101

pavg
Figure 2-31.
GR r :
3
GR r :
2
16-bit Sum
Plus
Carry
Shift Right
1 Bit
GR r :
1
3:202
Parallel Average with Round Away from Zero Example
1 1 1
+ + + +
pavg2.raz
1
Shift Right 1 Bit
Carry
Bit Sum Bits
Volume 3: Instruction Reference