Re: HLASM Floating Point Field - Remainder?
- From: Michel Hack <hack@xxxxxxxxxxxxxx>
- Date: Thu, 28 Jun 2007 15:17:33 -0700
On Jun 27, 9:33 pm, Barry Schwarz <schwa...@xxxxxxxxx> wrote:
In my admittedly limited experience (and I don't use VM at all), I
have never seen a product intended for the mainframe express time in
floating point.
IEEE double is well suited to hold time in seconds since 1900 (or
1970,
Unix-style) with microsecond resolution, and so is IBM Hex FP. With
at
least 53 bits of precision you can actually cover 300 years at that
resolution, and FP makes it easy to do interpolations on various
scales,
as is needed on non-S/370 machines (i.e. machines without STCK). (The
old POWER machines, up to PPC601 included, did have a real-time
clock.)
So it's true that FP times are perhaps less useful on S/370's
children.
Michel.
.
- References:
- HLASM Floating Point Field - Remainder?
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- Re: HLASM Floating Point Field - Remainder?
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- Re: HLASM Floating Point Field - Remainder?
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- Re: HLASM Floating Point Field - Remainder?
- From: Barry Schwarz
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