Groups > comp.graphics.apps.gnuplot > #4244

Re: SET FORMAT default

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From	Ethan Merritt <eamerritt@gmail.com>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: SET FORMAT default
Date	Sat, 12 Oct 2019 00:06:25 -0000 (UTC)
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On Thu, 10 Oct 2019 23:57:34 +0200, Karl Ratzsch wrote:

> Am 10.10.2019 um 23:19 schrieb layzarc@aol.com:
>> But does that really help if the value being printed comes from a single precision "float"?  I guess what I'm asking does Gnuplot use "double" floating point thoughout the SPLOT contour calculation and its printing to the TABLE? 
> 
> gnuplot has been using double precison fp math since some time in
> the last century I think.
> 
> If the contour calculation doesnt, that would constitute a bug. Do
> you have evidence for that?

There is one exception that I know of.
If a binary matrix is read in, it is stored as (float) rather than (double).
There's no good reason for that, but the binary input code is quite tangled
so fixing it would require some disentangling. It would be a good project
for someone (hint hint).

          Ethan

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SET FORMAT default layzarc@aol.com - 2019-10-10 11:29 -0700
  Re: SET FORMAT default Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2019-10-10 20:56 +0200
    Re: SET FORMAT default layzarc@aol.com - 2019-10-10 12:16 -0700
      Re: SET FORMAT default Karl Ratzsch <mail.kfr@gmx.net> - 2019-10-10 22:26 +0200
        Re: SET FORMAT default layzarc@aol.com - 2019-10-10 14:19 -0700
          Re: SET FORMAT default Karl Ratzsch <mail.kfr@gmx.net> - 2019-10-10 23:57 +0200
            Re: SET FORMAT default Ethan Merritt <eamerritt@gmail.com> - 2019-10-12 00:06 +0000

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