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Date:	Tue, 20 Oct 2015 19:18:25 -0800
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Subject:	Re: [geda-user] C99
From:	"Britton Kerin (britton DOT kerin AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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On Tue, Oct 20, 2015 at 1:08 PM, Sergey Stepanov (no DOT such DOT process AT gmail DOT com)
[via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:

> > Does it mean that functions related to C99 like 'hypot' cannot be used
> yet
>
> This one is supported for years (or even decades) as an extension to
> C89. There is one problem with it: if you use C89 and specific flags
> to compile 'pure c code', you should turn on some defines before
> `#include <math.h>`
>
> > though now I cannot find that branch in the repo.
>
> I just return it back after rebasing and testing.
>

Rebase of publicly pushed branches is often considered bad as it causes
confusion of this sort.  Even after branches get their final merge rebase
to master  its best to keep them around under their original name and from
original branch point, as that's likely the one most tested and free of
unanticipated adverse interactions with other new code.

Of course sometimes you want to rebase during devel but after the initial
publish.  I don't think we have a policy for this but I would suggest maybe
tag the old version as "rebased" or something and copy the branch to a new
name with _rebaseN appended.

The point is to not rewrite history (at least until rebase to master) so it
doesn't change under people.

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Tue, Oct 20, 2015 at 1:08 PM, Sergey Stepanov (<a href=3D"mailto:no.=
such DOT process AT gmail DOT com">no DOT such DOT process AT gmail DOT com</a>) [via <a href=3D"mail=
to:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>] <span dir=3D"ltr">&lt;=
<a href=3D"mailto:geda-user AT delorie DOT com" target=3D"_blank">geda-user AT delori=
e.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"m=
argin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=
=3D"">&gt; Does it mean that functions related to C99 like &#39;hypot&#39; =
cannot be used yet<br>
<br>
</span>This one is supported for years (or even decades) as an extension to=
<br>
C89. There is one problem with it: if you use C89 and specific flags<br>
to compile &#39;pure c code&#39;, you should turn on some defines before<br=
>
`#include &lt;math.h&gt;`<br>
<span class=3D""><br>
&gt; though now I cannot find that branch in the repo.<br>
<br>
</span>I just return it back after rebasing and testing.<br></blockquote><d=
iv><br></div><div style=3D"">Rebase of publicly pushed branches is often co=
nsidered bad as it causes confusion of this sort.=C2=A0 Even after branches=
 get their final merge rebase to master =C2=A0its best to keep them around =
under their original name and from original branch point, as that&#39;s lik=
ely the one most tested and free of unanticipated adverse interactions with=
 other new code.</div><div style=3D""><br></div><div style=3D"">Of course s=
ometimes you want to rebase during devel but after the initial publish.=C2=
=A0 I don&#39;t think we have a policy for this but I would suggest maybe t=
ag the old version as &quot;rebased&quot; or something and copy the branch =
to a new name with _rebaseN appended.</div><div style=3D""><br></div><div s=
tyle=3D"">The point is to not rewrite history (at least until rebase to mas=
ter) so it doesn&#39;t change under people.</div><div><br></div></div></div=
></div>

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