To: Fabian Raetz fabian.ra...@gmail.com
Cc: misc@openbsd.org
Date: Tue, 25 Feb 2014 01:00:49
Subject: Re: ksh: expr 2147483648 / 2 = -1073741824 expected behavior
or bug?
...
so i tried
expr 2147483647 / 2 which returns 1073741824 while
expr 2147483648 / 2 returns -1073741824
On Tue, Feb 25, 2014 at 02:00:49AM +0100, Ingo Schwarze wrote:
Hi Fabian,
Fabian Raetz wrote on Mon, Feb 24, 2014 at 10:59:34PM +0100:
while calculating my phys. memory (mb) with the
folllowing shellsript i get as a result -424.
sysctl -n hw.physmem returns 3849830400
On 02/25/2014 15:43, Fabian Raetz wrote:
On Tue, Feb 25, 2014 at 02:00:49AM +0100, Ingo Schwarze wrote:
Hi Fabian,
Fabian Raetz wrote on Mon, Feb 24, 2014 at 10:59:34PM +0100:
while calculating my phys. memory (mb) with the
folllowing shellsript i get as a result -424.
sysctl -n hw.physmem
Hi,
pae3 wrote on Tue, Feb 25, 2014 at 04:52:52PM +0400:
on my i386 system:
$expr 2147483648 + 0
-2147483648
$sh -c 'echo $((2147483648 + 0))'
-2147483648
$bash -c 'echo $((2147483648 + 0))'
2147483648
$zsh -c 'echo $((2147483648 + 0))'
2147483648
bug in ksh?
No.
Assuming you are
I'm pretty new to shell programming and the behavior required by POSIX
makes no
sense to me at all how could i ever trust in expr with unknown numbers?
Indeed. Sometimes you just can't trust decisions set in stone by POSIX.
Sometimes they are just plain broken.
If an architecture
Hi misc@,
while calculating my phys. memory (mb) with the
folllowing shellsript i get as a result -424.
sysctl -n hw.physmem returns 3849830400
#!/bin/sh
phys_mem_bytes=`sysctl -n hw.physmem`
phys_mem_mb=`expr $phys_mem_bytes / 1024 / 1024`
echo $phys_mem_mb
--
so i
On Mon, Feb 24, 2014 at 10:59 PM, Fabian Raetz fabian.ra...@gmail.com wrote:
while calculating my phys. memory (mb) with the
folllowing shellsript i get as a result -424.
sysctl -n hw.physmem returns 3849830400
#!/bin/sh
phys_mem_bytes=`sysctl -n hw.physmem`
On 02/24/14 22:32, Richard Pöttler wrote:
On Mon, Feb 24, 2014 at 10:59 PM, Fabian Raetz fabian.ra...@gmail.com wrote:
while calculating my phys. memory (mb) with the
folllowing shellsript i get as a result -424.
sysctl -n hw.physmem returns 3849830400
#!/bin/sh
On Mon, Feb 24, 2014 at 11:10:44PM +, Fred wrote:
On 02/24/14 22:32, Richard P??ttler wrote:
On Mon, Feb 24, 2014 at 10:59 PM, Fabian Raetz fabian.ra...@gmail.com
wrote:
while calculating my phys. memory (mb) with the
folllowing shellsript i get as a result -424.
sysctl -n hw.physmem
On 2014-02-24, Fabian Raetz fabian.ra...@gmail.com wrote:
Hi misc@,
while calculating my phys. memory (mb) with the
folllowing shellsript i get as a result -424.
sysctl -n hw.physmem returns 3849830400
#!/bin/sh
phys_mem_bytes=`sysctl -n hw.physmem`
phys_mem_mb=`expr
On February 25, 2014 12:27:41 AM CET, Stuart Henderson s...@spacehopper.org
wrote:
On 2014-02-24, Fabian Raetz fabian.ra...@gmail.com wrote:
Hi misc@,
while calculating my phys. memory (mb) with the
folllowing shellsript i get as a result -424.
sysctl -n hw.physmem returns 3849830400
It does for /bin/sh, which is why I suggested perl rather than echo
$(($(sysctl -n hw.physmem)/1024/1024)) which will work on 64-bit arch but not
32-bit.
On 24 February 2014 23:49:08 GMT+00:00, Alexander Hall alexan...@beard.se
wrote:
On February 25, 2014 12:27:41 AM CET, Stuart Henderson
Hi Fabian,
Fabian Raetz wrote on Mon, Feb 24, 2014 at 10:59:34PM +0100:
while calculating my phys. memory (mb) with the
folllowing shellsript i get as a result -424.
sysctl -n hw.physmem returns 3849830400
#!/bin/sh
phys_mem_bytes=`sysctl -n hw.physmem`
On Mon, Feb 24, 2014 at 5:00 PM, Ingo Schwarze schwa...@usta.de wrote:
...
The above behaviour is required by POSIX:
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap01.html#tag_17_01_02_01
Integer variables and constants, including the values of operands
and
On Tue, 25 Feb 2014, Ingo Schwarze wrote:
From: Ingo Schwarze schwa...@usta.de
To: Fabian Raetz fabian.ra...@gmail.com
Cc: misc@openbsd.org
Date: Tue, 25 Feb 2014 01:00:49
Subject: Re: ksh: expr 2147483648 / 2 = -1073741824 expected behavior or bug?
...
so i tried
expr 2147483647 / 2
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