I sometimes use MVCK for variable-length moves (in the same key). Usually,
a preceding IPK is needed, but EXed MVCs usually require a BCTR or
something. It's very convenient (especially when I don't want to decrement
the length register), but has the performance warning too.
It baffles me that
Just MVCL was tested vs a MVC loop
Chris Blaicher
Technical Architect
Software Development
Syncsort Incorporated
50 Tice Boulevard, Woodcliff Lake, NJ 07677
P: 201-930-8234 | M: 512-627-3803
E: cblaic...@syncsort.com
-Original Message-
From: IBM Mainframe Assembler List
On 28 October 2015 at 10:12, Paul Gilmartin
<0014e0e4a59b-dmarc-requ...@listserv.uga.edu> wrote:
> (Cross-posting)
>
> In the Assembler Callable Services Reference, I find no analogue
> of the C/C++ time() function. Is there one? Am I looking in the
> wrong place? Is the programmer expected
SRLG uses a "source" and "target" register as well as #bits.
STCKE MILLSECS
LG R1,MILLSECS # IGNORE SECOND DOUBLE WORD
SRLG R1,R1,5 # SCOOT RIGHT 5 BITS
DSGF R1,=F'100' # DIVIDE BY A MILLION
CGHI R0,50 #
>From my reading, time() returns a integer which is "time in seconds since
EPOCH". What is wrong with using the assembler STCKE instruction to get the
104 bit TOD clock (in a 16 byte, double word aligned, field). Bit 51 of
this value is 0.01 seconds since the z/OS epoch start. So, load bits
Like this?
> STCKEMILLSECS
> LG R1,MILLSECS # IGNORE SECOND DOUBLE WORD
> AGHI R1,1599 # ROUND UP
> DSGF R1,=F'3200' # DIVIDE BY 32 MILLION
> STG R1,DOUBLETIME
On 2015-10-28 17:58, Steve Smith wrote:
Also, the
