GNU bug report logs - #22495
sleep: doc: mention approximate sleep time

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Package: coreutils; Severity: wishlist; Reported by: 積丹尼 Dan Jacobson <jidanni@HIDDEN>; dated Sat, 30 Jan 2016 21:04:02 UTC; Maintainer for coreutils is bug-coreutils@HIDDEN.
Changed bug title to 'sleep: doc: mention approximate sleep time' from 'sleep floating point docs' Request was from Assaf Gordon <assafgordon@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Severity set to 'wishlist' from 'normal' Request was from Assaf Gordon <assafgordon@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

Message received at 22495 <at> debbugs.gnu.org:


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From: =?utf-8?B?56mN5Li55bC8?= Dan Jacobson <jidanni@HIDDEN>
To: Paul Eggert <eggert@HIDDEN>
Subject: Re: bug#22495: sleep floating point docs
References: <8737tebx0u.fsf@HIDDEN>
Date: Sun, 31 Jan 2016 09:05:28 +0800
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I can't tell if you are like the IRS: go ahead and add cents if you
insist. We'll do the truncation work for you. Or if you are saying that
you will be passing the cents along to the next layer...

I mean you even add additional arguments for him, so who knows the
motivation for all that flexibility.

Nobody can tell if you mean you are just tidying (int()) up his input
before passing it to a deeper layer that only takes ints.

Or if you are now "no longer unnecessarily not allowing the user to pass
floats if he wants. Which will be presented unharmed to the next layer."




Information forwarded to bug-coreutils@HIDDEN:
bug#22495; Package coreutils. Full text available.

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Subject: Re: bug#22495: sleep floating point docs
To: =?UTF-8?B?56mN5Li55bC8IERhbiBKYWNvYnNvbg==?= <jidanni@HIDDEN>,
 22495 <at> debbugs.gnu.org
References: <8737tebx0u.fsf@HIDDEN>
From: Paul Eggert <eggert@HIDDEN>
Organization: UCLA Computer Science Department
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=E7=A9=8D=E4=B8=B9=E5=B0=BC Dan Jacobson wrote:
> Add:
>
> *GNU sleep will pass that floating number to the system, which might or
>   might not ignore the time indicated after the decimal point.
>
> OR
>
> *GNU sleep will round / truncate? the number into a whole number, befor=
e
> sending it to the system.

"sleep" has always been approximate.  If you issue a "sleep X" command, a=
ll that=20
you can count on is that you sleep for at least X seconds.  We shouldn't=20
document the internals of how "sleep" accomplishes this.  That being said=
, it=20
might make sense to say "sleep is approximate", if we're not saying it al=
ready.




Information forwarded to bug-coreutils@HIDDEN:
bug#22495; Package coreutils. Full text available.

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From: =?utf-8?B?56mN5Li55bC8?= Dan Jacobson <jidanni@HIDDEN>
To: bug-coreutils@HIDDEN
Subject: sleep floating point docs
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(info "(coreutils) sleep invocation")

   Historical implementations of =E2=80=98sleep=E2=80=99 have required th=
at NUMBER be an
integer, and only accepted a single argument without a suffix.  However,
GNU =E2=80=98sleep=E2=80=99 accepts arbitrary floating point numbers.  *N=
ote Floating
point::.

Add:

*GNU sleep will pass that floating number to the system, which might or
 might not ignore the time indicated after the decimal point.

OR

*GNU sleep will round / truncate? the number into a whole number, before
sending it to the system.




Acknowledgement sent to 積丹尼 Dan Jacobson <jidanni@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-coreutils@HIDDEN. Full text available.
Report forwarded to bug-coreutils@HIDDEN:
bug#22495; Package coreutils. Full text available.
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