Programming :: Asm 64bit Registers - "64-bit Linux Allows Up To Fourteen Parameters To Be Transferred In Registers (6 Integer And 8 Floating Point)."

Mar 28, 2010

I have tried to learn how 64bit asm (nasm in my case) works and found, among the many disparate pieces of info on the net, a few vague inferences that floating point registers can be used for other purposes than what they are intended for, example: "64-bit Linux allows up to fourteen parameters to be transferred in registers (6 integer and 8 floating point)." This would be fantastic for string operations/manipulation (I have never used asm for floating-point operations), can anyone shed a bit of light?

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Programming :: Perform Floating Point Operations In Linux Kernel?

Apr 7, 2011

how to perform floating point operations in kernel? i answered that its impossible to perform floating point operations in kernel.but he is telling that its possible but with some feature to be added.can any body know about this perfectly??

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Programming :: Bash To Read Write Registers?

Jun 3, 2010

I have been looking for a script example of reading and writing to the parallel port's data, status, and control registers using bash. I see it done in pascal, tcl, etc. but nothing in bash.

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General :: Access CRx Registers On A Multi Core Processor

Sep 9, 2011

I need to set the CR4.MCE bit for all the cores on my system (4). I'd like to write a linux kernel module for that, but I am not sure how to proceed: How do you sequentially access all of the CR4 registers? I have read the Intel manuals and they describe a way to initialize each core, but this is done in the bios.

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Ubuntu Multimedia :: Lirc/irw: IMON Pad Registers Some Events Twice

May 6, 2010

I use Mythbuntu 9.10 with an IMON PAD IR/VFD. Everything is fine except that two buttons (MyDVD and menu) fire their event twice. In that case, I'm not talking about a normal repetition in case of a long button press but they fire their initial events twice.

Here is what irw shows:
0000000029a3d5b7 00 MyDVD iMON-PAD
0000000029a3d5b7 00 MyDVD iMON-PAD
000000002ba385b7 00 Menu iMON-PAD
000000002ba385b7 00 Menu iMON-PAD

I pressed the buttons only once each - and not long enough for a repetition. For all other buttons it's fine. As far as I understand, using the .lirrc file to cope with repetitions is no valid approach (at least it didn't work for me) because the events are all numbered with "00", and not with "00", "01",... - so .lircrc is out of this, right?

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General :: Access Registers - Mmap Doesn't Work

Jun 16, 2010

I will try to write correctly but be indulgent... so as describe in the title I have a CPU ARM and I want to access a register. i tried with mmap but it doesn't work. i attach my program if someone see the problem... so when I run the program there isn't any error, all works (open, mmap ...) but I know that my program do nothing because i have ask to read something that i know and there is nothing...

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General :: Minicom Offline But Uart Registers Working?

Jul 14, 2011

I am trying to access an OpenBSD system that I have just installed via my PcBSD system by the use of a serial cable. I have been trying both minicom and cu but I am obviously doing something wrong... cu -l /dev/cuad0 returns /var/spool/lock/LCK...cuad0 Permission Denied. Can't Open lock file. all ports busy. And when I try to connect through minicom I either get a similar lock error, or minicom will sit at the connection screen with (offline status). I feel like the answer to my problems is a rather simple one, but I do not know where else to look for information.

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Ubuntu :: Meerkat Gcalctool 5.32.0 (default Calculator) Missing Memory Registers

Oct 28, 2010

Ubuntu 10.10 default calculator, gcalctool 5.32. seems to be missing the 10 memory registers it used to have. The geaphic keys for memory functions are missing and control-M does not bring up memory pop-up either. Am I just missing something or have they been removed? I store lots of intermediate results in the registers for use later in calculations.

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OpenSUSE :: Plasma No Longer Registers Mouse Clicks After Unlocking The Cursor From DOSBox

Jun 18, 2011

I'm currently running openSuSE 11.4 (kde v 4.6.4), and after unlocking the mouse cursor from the DOSBox (v 0.74) window, none of the Plasma Desktop Widgets or Components will register mouse clicks until I reboot.

Is there something config-wise I might change to prevent this from happening, or is there an otherwise quick way to restart only plasma using the terminal? Yakuake still drops down, and works, fortunately, so doing this is not a problem.

EDIT: Forgot to mention that all of said applications were installed from openSuSE repos using YaST2.

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Programming :: Force A Floating Point To Show More 0s?

Sep 9, 2010

I am dealing with money and I don't want it to show $.1, I'd rather it show $.10 Is there a way to change this in C++?

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Programming :: Operator For Floating Point Comparison?

May 10, 2011

I know it is wrong to use the "==" operator to compare the equality of two floating point numbers. Logically it would seem that if the "==" operator is not usable for floating point comparison, then the "<=" operator would also not be usable. Is this true? The lack of google search results on this topic made me think that it must be true. If that is true, then is it true that the only way to compare floats with <= or >= is with something like the code below? Code: bool smaller_than_or_equal(float a, float b) {

if ( fabs(a-b) < EPSILON){return true;}
else if (a < b) {return true;}
else {return false;}

} I think this is a general question, but if specifics are necessary, I am using the C++ language to code at the moment.

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Programming :: IEEE Floating Point Format?

Jun 5, 2011

I'm reading a book on assembly, and it talks a bit about the IEEE floating point format.

Quote:

To summarize, the following steps are used to convert a decimal number to IEEE single format: 1. The leading bit of the floating point format is 0 for a positive number and 1 for a negative number. 2. Write the unsigned number in binary. 3. Write the binary number in binary scientific notation f23.f22 ... f0 2^e, where f23 = 1. There are 24 fraction bits, but it is not necessary to write trailing 0's. 4. Add a bias of 127 to the exponent e. This sum, in binary form, is the next 8 bits of the answer, following the sign bit. (Adding a bias is an alternative to storing the exponent as a signed number.) 5. The fraction bits f22f21 ... f0 form the last 23 bits of the floating point number. The leading bit f23 (which is always 1) is dropped.

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Programming :: Fortran Runtime Error: Bad Value During Floating Point Read

Jun 28, 2011

I am getting error Fortran runtime error: Bad value during floating point read. How do I format negative sign?

[code]...

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Programming :: Octave - Load A Text File With Floating Point Values Into A Matrix?

Jan 29, 2011

I have a .txt file with the format

0.01
0.04
0.07
...
0.83

I am wanting to load this into octave and perform operations on the data.

[Code]...

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Ubuntu Servers :: Buying Domain / Hosting Web Server / All Domain Registers Come With Email Or Just Email Forwarding?

Mar 29, 2010

I am thinking about buying a domain name and hosting my web server.

I have seen pricing from $8 to $30 a year. Any favorites from fellow ubunters? Also this whole "whois" thing scares me, if I am correct my information I enter when buying the domain is enter into some big pool of information. People can find this information out and dig up important information. url Can I prevent this with private Whois or how do I set it up? This website examples some of my fears with this whole WhoIs thing, url whois/Private-Whois.html Does most/all domain registers come with email or just email forwarding or both? How does that work? At this moment, my only question about Web Hosting is how do I get Website Statistics as in: Stats, web analytics, web traffic stats and more? I will be web hosting through Ubuntu 9.10 gnome.

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Programming :: Invoke The Calculator "bc" In Bash Script For Floating Point Arithmetic?

May 15, 2010

My main problem right now is doing floating point arithmetic within a bash script, with variables.Right now I have a folder called "myExamples" with a script called "run_example" that runs with no issues.I plan to(1) create many folders inside [myExamples], that are named [example10] [example11]...each containing an identical copy of (run_example),(2) modify Line 172 of each copy of (run_example)...in one copy, it would be 3.00, the next copy would have 3.05, etc. (This part doesn't work!)How can use the available calculator bc code to do floating point operations?My code is below -

#!/bin/sh
# run from directory where this script is
cd `echo $0 | sed 's/(.*)/.*/1/'` # extract pathname

[code]...

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Ubuntu :: Pidgin Floating Point Exception?

Feb 18, 2010

pidgin started crashing today for no apparent reason. It just shutdowns. No freezing or anything, it just goes away, disappears. From what I can say, there's no specific trigger for this, it can happen after 2 or 10 min after I started it. Once it even shutdown right 10seconds. I tried to run it from the terminal. When I do that, the only thing that appears before closing is

Code:
Floating point exception Anyone has an idea of what it can be? I made no upgrade to pidgin or libpurple recently. I made however an upgrade today of the following packages

Code:
Commit Log for Thu Feb 18 10:24:00 2010

[Code]...

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Red Hat / Fedora :: Top Giving Floating Point Exception?

Jan 5, 2010

I am facing floating point exception issues in running top on some of my Red-Hat Linux servers

# top
6:45am up 476 days, 52 min, 4 users, load average: 0.00, 0.00, 0.00
109 processes: 108 sleeping, 1 running, 0 zombie, 0 stopped
Floating point exception
When I am executing the same command using strace or ltrace, its running fine.
# ls -lrt /usr/bin/top

[Code]...

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Networking :: DHCP Floating Point Exception?

Jul 1, 2010

I am using a gateway server, 1st NIC eth0 which is acting as WAN (DHCP)and 2nd NIC acting LAN(static). I am using DHCP to assign IP to eth0 from a Wimax modem. I am also use it as a MAIL server (openmail), and as a DHCP server. My server is of RHEL and kernel version is 2.4.8.18-14 and DHCP client & server version - 30pl1-9. The prolem is whenever I run the command..

ifup eth0
getting the error...

Determining IP information for eth0.../ifup: line277: 23328 Floating point exception/sbin/dhclient ${DHCLIENTARGS} ${DEVICE}
so what should I do?? if I update the DHCP, would it be ok?

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OpenSUSE :: Gnome Apps Floating Point Exception?

Mar 12, 2010

games, specifically solitaire and gimp both have started returning a floating point exception fault.

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OpenSUSE :: Suse 11.3 Floating Point Exception After Update?

Jan 9, 2011

I had fuzzy icons in system tray so before couple of days i installed some updates and after that i have floating point exception in ktorrent and virtualbox 2.6.34.7-0.7-desktop #1 SMP PREEMPT 2010-12-13 11:13:53 +0100 i686 athlon i386 GNU/Linux

nvidia 9500 GT
X.Org X Server 1.8.0
KDE 4.4.4
Here is the updates
nvidia-gfxG02-kmp-desktop-260.19.21_k2.6.34.0_12-19.1 Tue 04 Jan 2011 04:14:42 PM CET
x11-video-nvidiaG02-260.19.21-20.1

[Code]...

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Ubuntu :: Gnome-terminal: Floating Point Exception?

May 27, 2011

This is the first time I post a question on these forums My problem is as follows: I can't start gnome-terminal from the Applications->Accesories menu or from the Alt+F2 application launcher. I get a "Starting Terminal" in the task-bar that disappears after a few seconds and no terminal. I'm pretty sure there is something I did, but I can't really figure out what it is.

The things I've tried so far:

1. I used synaptic to remove and reinstall gnome-terminal. That didn't work
2. Started Xterm and tried to run "gnome-terminal". This is where it gets weird for me:

a. running the command as normal user I get a "Floating point exception" error and obviosly no terminal
b. when I do "sudo gnome-terminal" and enter the root password I get, as expected, a root terminal. I could live with that, but it's not ideal.

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Hardware :: Mounting SD Card - Floating Point Error?

Feb 17, 2009

I put an SD card in a reader, got all the right signs from the kernel (SCSI device: sda; write-through; etc.)including its 2GB size.

When I try to mount /dev/sda1 I get 'floating point exception' as a response, and it won't mount.

I've never had that message returned from mount, and I can't find any reference to it.

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Software :: Make G++ Compile In Floating Point Support?

Apr 14, 2011

One of those odd things I learned the hard way is that if you are writing a shared object (library/.so) and any programs that will link to that library uses floating point numbers, the library must be compiled as if it uses floating point numbers. What that really means is, you need to declare at least one float in the source for the library or when the caller connects and tries to run code in the library, the process aborts.I end up putting a float pi (3.1415); in the code and getting an unused variable warning all the time. There has to be a simpler way, some flag to pass to g++ that says, "include floating point support even if you don't really need to."

p.s. Gosh I hope I remembered this correctly. I encountered this problem doing a multi-platform build for Windows and Linux. This COULD be a VC++ problem that I just carried into Linux by using the same source.

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OpenSUSE Multimedia :: WinFF Won't Start Up Floating Point Exeption?

Mar 17, 2011

Just updated WinFF to version 1.3.2-1.1. Since then it won't start up any more due to a floating point exeption. System: OpenSUSE 11.4 (x86) + KDE 4.6.0 Debug info:

WARNING] Out of OEM specific VK codes, changing to unassigned
[WARNING] Out of unassigned VK codes, assigning $FF
ERROR in LCL: TLRSObjectReader.SkipValue unknown valuetype
Creating gdb catchable error:
$080D1568

[Code]...

I had the same error with earlier versions of WinFF in earlier versions of OpenSUSE. Then I could fix it by changing the KDE window styles. The error also occurs with the WinFF qt-version.

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Ubuntu :: Evince Floating Point Error On Opening PDF File

May 1, 2010

Over the last few months there have been multiple updates and I am getting a list of things that no longer work or that cause my system to fail. I can no longer open a pdf in firefox. It says there is no application assigned to the task. I ran evince and tried to open a pdf file and received a "floating point" error message on the terminal screen I was working from.

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Ubuntu Multimedia :: DVD9 To DVD5 Floating Point Exception?

Oct 14, 2010

I have been trying to convert a DVD9 to DVD5 using the following steps

1)Rip the DVD title(s) to harddisk with DVD:RIP in a project folder. This created VOB files of the the movie and the soundtrack you picked.

2)Concatenate (merge) the VOB files into one by running in a console: cat *.vob > movie.vob

3)demutliplex movie.vob and get the M2V and AC3 files out of there. tcextract -i movie.vob -t vob -x mpeg2 > movie.m2v

4)tcextract -i movie.vob -a 0 -x ac3 -t vob > movie.ac3

5)I then shrank the movie.m2v tcrequant -i movie.m2v -o shrinked.m2v -f 1.5

[Code]...

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CentOS 5 :: Cron Errors - Segmentation Fault, Floating Point Exception

Dec 7, 2009

I'm running CentOS 5.4.In the last three days I've started to get various cron errors:

/bin/sh: line 1: 7066 Segmentation fault /usr/local/scripts/cron.email.sshd.access/cron.email.sshd.access.pl
/bin/sh: line 1: 4822 Floating point exceptionsudo -u mobile getmail --quiet
Can't load '/usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi/auto/RRDs/RRDs.so'

[code]...

Then yesterday I rebooted, and all the other errors seemed to have disappeared for now, but, I am now getting:

/bin/sh: line 1: 23600 Segmentation fault sudo -u mobile getmail --quiet

I have setup cron to call getmail once every 3 minutes, and I get this error about 4-6 times an hour.

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Ubuntu :: Get A "floating Point Exception" Message?

May 1, 2010

I just Installed Xubuntu 10.04 and as I was using it, the panels dissapeared. I tried running xfce4-panel but I get a "floating point exception" message. what might be causeing this?

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OpenSUSE Install :: Floating Point Exception After Kde 4.6 Install?

Feb 1, 2011

why installing kde 4.6 from factory repos went wrong ? i used zypper dup with oss, non-oss and update repos for 11.3 to reset to default install and boot went ok :

this goes with the following package versions:
$ kded4 --version
Qt�: 4.6.3
KDE�: 4.4.4 (KDE 4.4.4) "release 3"
i'm using this x86 kernel :

[Code]...

my problem : when i add factory repos (core and extra) for kde install of packages from yast is ok when switching system packages to these. but after reboot i have floating point exceptions and a black screen and can' t boot anymore. the only way out i found so far is to zypper dup to go back to kde 4.4.4

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