Programming :: Implementing Hamming Code In C Lang?
Sep 12, 2010
implementing hamming code in c: Calculating the Hamming Code The key to the Hamming Code is the use of extra parity bits to allow the identification of a single error. Create the code word as follows:
Mark all bit positions that are powers of two as parity bits. (positions 1, 2, 4, 8, 16, 32, 64, etc.)
All other bit positions are for the data to be encoded. (positions 3, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, etc.)
I doing malloc and getting the chunk of dynamic memory. Now I want it to align that memory to 64KB. This means that the address of the memory starts from 64KB or multiple of 64KB.
working on a script to update .Jar file, I have tried jar xf to unpack and jar cf to repack it is giving me java.lang.NoClassDefFoundError exception at main class. I also tried jar uf, which is also not working for me Basically my jar file requires to update date, which i do from "winrar" Manual it works fine, but now to remove "Donkey work", i want to make an script which does this all automatically, and the last stage is to update jar file which is not happening.
I'm interested in writing a generational garbage collector in C++. This is for a Python-like programming language project. I have used Boehm's garbage collector before, but I'm worried that it will have noticeable pause times (unacceptable for interactive programs). Since I can't really find any other C++ established GCs out there, I have been thinking of simply writing my own.
However, there are two essential ingredients I need for this:
- Some kind of write barrier mechanism that will notify my collector when something is written to a part of the heap
- A way for me to know the addresses and sizes of the stack, heap and global storage (the root sets)
how to implement write barriers (and how to get the stack, heap and global storage information) on the Linux platform? As an alternative, if you know of C++ GCs other than Boehm, I would also be interested.
I am working on xlib project to develop text editor without using help from any of toolkit/widgets.I get stuck in scrollbar.I have no idea how they work and developed.It become more difficult as I am using low-level C library - xlib.
Though I have developed some web applications (automation tools) using PHP which have been primarily meant for Intranet (within the organizations I have worked for), I have paid little attention to SEO (it was not required until now). But now I want to understand how do we go about implementing SEO and where do we fit this mechanism in a system / website?
Do we need any other tools or learn some specific programming /scripting language to achieve it?Will implementing a good SEO yield identical results irrespective of what search engine (be it Google or Yahoo!) is being used by users?
i am running linux kernel 2.6.32-30 and my aim is to do packet aggregation in linux,so i created a qdisc simple one like sch_fifo.c and i wanted to put upon the dequeue function but when i attach my qdisct with tc qdisc add dev wlan0 root aggregate my screen just go black and in var/log/messages it says 31 m of stolen memory.graphic perfomance may suffer. can you somebody pls help me. Below is my dequeue function.
I run Wheezy Xfce 64-bit. I went through the Synaptic listings and added Python 3.3.2 and Tkinter for it, and that works fine; but for some reason PyGtk is available only for Python 2.7, not for Python 3.3, unless I'm just using the wrong way to try to find it. Is there a PyGtk available for Python 3.3 in Wheezy, and, if so, how do I install it and then import it once it's installed?
Options:A double linked list with fixed size character arrays. New nodes will be added when previous ones get filled. Dynamic arrays using realloc(). Linked list has the disadvantage of not having an O(1) search like an array but I think using realloc() will be more dangerous since it moves the whole block to a new location and if the new location is not big enough to hold the whole block, realloc fails !! this case will not occur with the linked list since its nodes are scattered.
I need to implement AIDE on my client machines. The builds on these machine are different, so each workstation will have its own specific db generated through running AIDE initially. It is not good practice to just leave the db on the machine, since an "attacker" would be able to view this information. However, at the same time I do not want to pull back over 100 different aide db's to the ftp server and have an update pull each specifically every time I need to run the check. The plan is to leave the db on the client machine, but encrypt it (using public/private keys). I need to be able to encrypt the file on the client machine. I will use a cron on the client to pull an update (from my ftp server) that runs AIDE. This update needs to be able to decrypt the file, use it running AIDE, then re-encrypt the file on the client.
ince Ubuntu 11.04 the "LANG" environment variable keeps getting overruled somewhere. The result is that the date notation in the indicator area and the GRUB boot menu is in a different language compared to the rest.At login I have selected the language en_GB, the same language is at the top in the "Language support" dialog. However, I have set my "Regional format" to "nl_NL".When I check "env" in the terminal LANG is set to "nl_NL" as well.I tried forcing it to "en_GB" by adding "LANG=en_GB" in "/etc/environment" but this did not help.
I use Fedora 10.When I use Firefox , the following message appear with the dialog box.java.lang.SecurityException:Changing the SecurityManager is not allowed.:I click OK button.How can I do for it.
The automatic updater cannot install bundle-lang-gnome 2233: "A protected system package cannot be removed" ("Ein geschtztes System-Paket kann nicht entfernt werden.")Detail info: "Subprocess failed. Error: RPM failed: error: package bundle-lang-gnome-extras-de-11.2-19.21.1.noarch is not installed"
I am working on a project with a lot of vector math and I'd like to find a way to speed it up.eading about SSE, but I've found no explanation on how to actually use it in code (was looking for some kind of hello-world example, complete with compilation instructions).Does the gcc compiler automatically make use of SSE, if you add the -sse(2,3) option on the command line? Or are their specific functions/libraries you need to call?
Is there, by chance, a fancy name to describe code that must be in a program but will never be executed? In one of my (Haskell) programs, I have some error-handling code that must be in the program to keep the compiler happy (due to the type checking). However I know that, due to the logical structure of the program, it is impossible for the code to be evaluated. I am curious if there is a technical name given to code that must exist but cannot be executed.
I went to compile some "oldish" glx code. The code compiles great but when I go to run it I get a crash. With X Error of failed request: BadMatch (in .....running ddd causes my whole system to lock up when I call the glx function XOpenDisplay. After a few attempts I thought I'd download a demo from the net, I choose nehe opengl tutorial 2, I compiled and ran but even on a net tutorial I get the same error
So essentially, it finds dx files, sorts them by numbers at the beginning, then performs the dx function I made (loops over all of the #-protein.dx and #-water.dx files).
It works fine when I'm running it on Ubuntu 11.04. However, when I try to run it on OSX, I get the following error:
Code: mh320m01:DA_R02 janickij$ ./MOD_Loop_Tuber_Script.sh find: illegal option -- t find: illegal option -- y
I work as a linux sysadmin, and are now and then developing scripts that might be of use for others. I'd like to be able to share these, and for less trivial projects maybe create a central repository or something that others may upload updates/patches to etc.
I want to write a c program with some shell scripts.Now For a simple C program. I am Setting a variable called val2 in bash, now I want to use bash variable val2 in C code. How do I do that?The above doesn't work (coz its spawning a different memory space and when shell script ends the variable dies with it as per my research but how do I keep them in same memory space)Also Is there any Good reference where they teach how to integrate C and Bash Together?
