Maybe this topic should also look outside the IBM mainframe, since the
decimal floating point is a cross platform project. It can be found on
Linux*, Windows*, HP-UX*, Solaris*, or macOS* and maybe more. Try
google.
/Paul Saers
2024-03-06 19:02 skrev Gary Weinhold:
This reminds me in a way of number representation in COBOL. The
PICTURE allows you to place the implicit decimal point anywhere, which
will afftect the display of the number, but internally there is just a
fullword, or packed decimal or halfward, etc. So the programmer
choses whether to display, for example, $12345.67 (dollars and cents)
or 1234567 pennies or 12.3 Thousands of dollars.
Where do you get to indicate whether you want LUV or RUV? Is it part
of the convert to zoned decimal or is it an convention that an
application agrees on? I can see what it is but I can't see how I can
request one or the other in assemlber language. Or is an HLL concept
that some asembler subroutine implements for the HLL?
Gary Weinhold
Senior Application Architect
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________________________________
From: IBM Mainframe Assembler List <[email protected]>
on behalf of Gary L Peskin <[email protected]>
Sent: March 6, 2024 11:30
To: [email protected] <[email protected]>
Subject: Re: Decimal Floating Point Numbers
Thanks, Abe. I'm glad I was able to help. I don't really understand
why they started with this whole LUV/RUV thing anyway. They could have
just picked one and said that that's the representation and left it at
that (no pun intended!). But I guess that wouldn't have been confusing
enough.
Take care,
Gary
