These instructions operate on registers or memory. S,D represent source and destination.
|addsd||S,D||D + S → D|
|subsd||S,D||D - S → D|
|mulsd||S,D||D * S → D|
|divsd||S,D||D / S → D|
|cmpsd||S,D||compare D - S , set condition|
Routines are provided to generate the instruction sequences for fix, float and negate operations.