On 8/03/2017 10:28 PM, David Griffiths1 wrote:
I understood the original question to be how to avoid OMVS and you almost
certainly need OMVS for printf. For Metal C I wrote my own printf subset
that calls WTO - you at least have varargs.
To me Metal/C is best used for system level programming like AR mode
programs. It's great for that with __far pointers. For LE I wouldn't use
C at all.
Why use C when you've got a decent C++ compiler with the STL and the
other goodies? I hope that z/OS V2.3 delivers more C++11 features. It's
becoming
difficult to port stuff because of the disparity with compilers from
other platforms.
Cheers,
Dave Griffiths
z/OS Developer
IBM United Kingdom Limited, Hursley Park, Winchester, SO21 2JN, UK
From: David Crayford <[email protected]>
To: [email protected]
Date: 08/03/2017 13:52
Subject: Re: Which C library functions imply dub?
Sent by: IBM Mainframe Discussion List <[email protected]>
On 8/03/2017 9:15 PM, David Griffiths1 wrote:
Hi, not sure of the definitive answer but you can probably take a guess
by
comparing with the Metal C library. By definition Metal C calls don't
require access to the unix kernel. In fact if you don't want to connect
to
OMVS why not use Metal C anyway?
That's a no-brainer! For a simple example how about just being able to
use printf().
Cheers,
Dave Griffiths
z/OS Developer
IBM United Kingdom Limited, Hursley Park, Winchester, SO21 2JN, UK
From: Charles Mills <[email protected]>
To: [email protected]
Date: 08/03/2017 02:30
Subject: Which C library functions imply dub?
Sent by: IBM Mainframe Discussion List <[email protected]>
X-posted from a thread on MVS-OE
How would I determine which standard C library functions imply or cause
a
dub? (Other than by trying them without an OMVS segment and seeing if
they
blow up?) Is this documented somewhere? I guess another way of phrasing
the
question is "how would I determine which standard C library functions
are
'UNIX functions'?"
Do most of them? Surely not strlen()? Does fopen()? Only if you
reference
a
UNIX file as opposed to //DD:FOO?
Charles
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
