You wanted assembler. Can you read C as though it were pseudo-code? This gets
you partway there. (C library strftime() gets you the rest of the way if that
is an option.) Assume stckValue is the TOD clock value.
psaptr = NULL;
cvtptr = static_cast<cvt *>(psaptr->flccvt);
cvtxtnt2 *cvt2ptr;
cvt2ptr = *reinterpret_cast<cvtxtnt2 **>(&cvtptr->cvtext2);
stckValue -= *reinterpret_cast<long long *>(&cvt2ptr->cvtlso); //
leap seconds since 1970 (as TOD clock value)
// shift stckValue right 12 bits to get microseconds
stckValue >>= 12;
// divide by one million. quotient is seconds, remainder is microseconds
fractionalSeconds = stckValue % oneMillion;
stckValue = stckValue / oneMillion;
Charles
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf
Of Donald Russell
Sent: Tuesday, September 30, 2014 3:41 PM
To: [email protected]
Subject: Convert TOD to calendar date/time
I have zOS 2.1 and am looking for an assembler macro or some other utility I
can call (load/delete or via cvt etc) to convert an 8-byte TOD clock value into
a character string like yyyy-mm-dd hh:mm:ss.uuuuuu
That actual date format doesn't matter too much, I'm more interested in the
time portion and sub-second precision.
Is there anything like that already available, or do I need to write my own?
Thank you,
Donald Russell
--
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