On Tue, 23 Jul 2013 20:07:26 -0400, John Gilmore wrote:

>I am happy to have David join in my recommendation, and I can imagine
>a circumstance in which RLLG would be more useful than RLL, but RLL
>itself does 64-bit rotations.

Really?  That's not the way I read the POO.  The description for RLL and RLLG 
reads:

<quote>
The 32-bit or 64-bit third operand is rotated left the
number of bits specified by the second-operand
address, and the result is placed at the first-operand
location. Except for when the R1 and R3 fields designate
the same register, the third operand remains
unchanged in general register R3. For ROTATE LEFT
SINGLE LOGICAL (RLL), bits 0-31 of general registers
R1 and R3 remain unchanged.

...

For RLL, the first and third operands are in bit positions
32-63 of general registers R1 and R3, respectively.
For RLLG, the operands are in bit positions
0-63 of the registers.
</quote>

-- 
Tom Marchant

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Reply via email to