WDADD    RD, RF, R1, R2, cmd, d_sign-1
         RD, RF, R1, immediate, cmd, d_sign-1

F/WDADD  RD, R1, R2, cmd, d_sign-1
         RD, R1, immediate, cmd, d_sign-1

WDDEC    RD, RF, R1, R2, cmd, d_sign-1
         RD, RF, R1, immediate, cmd, d_sign-1

F/WDDEC  RD, R1, R2, cmd, d_sign-1
         RD, R1, immediate, cmd, d_sign-1
