Search DaniWeb - endianness

Re: Endianness extent 12 Years Ago by deceptikon … and have consistent behavior regardless of the endianness of the system, and that's one…nullptr) { // Extract bytes as stored in memory (different endianness will give different results) unsigned char* pun = (unsigned char…lt;unsigned char> result; // Extract bytes regardless of endianness for (size_t i = 0; i < sizeof(T… Endianness question 12 Years Ago by Thermalnuke Hey, I have been doing research on Endianness. I know that little Endian means that the least …, which they are just the opposite just switched around. Endianness will not affect your programs performance or correctness, for as… this rule, you could be thrown off by the Endianness of the architecture by programs that cross networks boundaries? Endianness extent 12 Years Ago by Labdabeta To what extent does the system endianness effect a program. I know that doing pointer assignment will be affected, and unions are too, but what about bitshift operators? Do they apply to the value, merely emulating real bitshifts, or do they apply to the bits themselves? Are there any other cases where endianness should be taken into account? Re: Endianness question 12 Years Ago by rubberman Data sent over networks can have this problem, which is why there are macro functions in C that will switch one form to a neutral form (network form), and another which will take a network form number and convert it to local. This needs to be done because you might be receiving a number (16, 32, or 64 bit) from one endian, like a Sparc processor (… Re: Endianness question 12 Years Ago by Thermalnuke Thank you i did Read that in wikipedia didnt know if it was to accurate.... Re: Endianness question 12 Years Ago by rubberman From what I read, it is. Since you NEVER know what kind of machine (without jumping through some non-standard hoops) you are getting data from, you have to assume that the data is in network form (and I cannot for the life of me remember if that is big or little endian!), and so convert it accordingly. If your system is the same as the network form… Re: Endianness extent 12 Years Ago by Labdabeta Thank you! That was what I suspected, very helpful! Simple Data Type 15 Years Ago by Se7Olutionyg … are the common forms of endianness, and middle-endian is another. endianness (10) What is endianness of processor? Ans: If… data type is more than one byte then endianness decides the memory representation of data type.There …are two type of endianness. Little-endian: The processor which follow the following… Inverse result with macro #ifdef's in Poco Library 10 Years Ago by Curious Gorge …include <string.h> #ifdef POCO_ARCH_LITTLE_ENDIAN std::string endianness = "Host byte order is Little Endian.\n&…quot;; #else std::string endianness = "Host byte order is Big Endian.\n…cout << bit_arch; std::cout << endianness; std::cout << "Size of the … Bits, Part 3 19 Years Ago by Dave Sinkula … because of the [i][url=http://en.wikipedia.org/wiki/Endianness]endianness[/url][/i] of my implementation. When it comes to displaying… Little Endian notation in FAT16 11 Years Ago by anumash …. I was just wondering how the C compiler knows the endianness of the filesystem i.e. how can the compiler know… I can't understand how the C compiler knows the endianness beforehand. Re: Little Endian notation in FAT16 11 Years Ago by deceptikon > It is using little endian notation but I can't understand how the C compiler knows the endianness beforehand. The compiler is written for a specific platform, and the platform's endianness is well known. packing wav data in c 16 Years Ago by csteverun … to a 16 bit wav channel chunk. It gets the endianness right and it works. How would one go about creating… Darwin Ports / how to build whiterussian router firmware? 16 Years Ago by iching808 …/sstrip.c src/sstrip.c:373:2: error: #error unkown endianness make[2]: *** [/Volumes/OpenWRTbuild/whiterussian-0.9/toolchain_build_mipsel/utils/sstrip… Binary I/O 12 Years Ago by hondros … that can help. First and foremost, you have to take endianness into account whenever you are working with binary data. We… Re: Binary I/O 12 Years Ago by hondros … my file on a separate computer that has a different endianness? Say this one is Big, and the other one is… Re: Binary I/O 12 Years Ago by mike_2000_17 … my file on a separate computer that has a different endianness? Well, you know what your code does, don't you… Determine/convert little endian 12 Years Ago by dedmon [QUOTE=Narue;1387727]Endianness is about byte order, not bit order. So 00000000 00000000 … Reading a binary file 11 Years Ago by anumash … bytes. Now, my question is how does the compiler handle endianness? If I convert the short into hex by using 02x… Bitmap Loading 11 Years Ago by Labdabeta … on wikipedia show integers stored in a sort of interleaved-endianness... I am wondering if normal c-style stdio file io… Binary File Input Bug 10 Years Ago by Labdabeta …; char buf; while (!file.eof()) {//complicated i/o to ignore endianness file.read(&buf,1); tmp=buf<<24… Re: Binary File Input Bug 10 Years Ago by Ancient Dragon … buf[4]; while (!file.eof()) {//complicated i/o to ignore endianness file.read(&buf[3],1); file.read(&buf… C socket send/recv integers across systems with different endianness 13 Years Ago by aiosarem Hi, I'm trying to learn the in's and out's of using the send and recv functions of a socket in C and I've hit a bit of a road block! I'm trying to send an integer from one system to another, however one system is big endian (the client) and the other is little endian (the server). My goal for the moment is simple: I want to type an integer in … Re: C socket send/recv integers across systems with different endianness 13 Years Ago by aiosarem [QUOTE=aiosarem;1213340] [B]server.c[/B] [CODE=c] [...] int a; retval = recv(clientfd, &a, 4, 0); printf("Message: %d\n", ntohl(a)); [...] [/CODE] [/QUOTE] Okay, I realized I wasn't initializing a nor was I checking the retval of recv to make sure it was receiving something. retval is receiving 0, which I believe means … Re: C socket send/recv integers across systems with different endianness 13 Years Ago by aiosarem I knew I'd figure it out as soon as I posted this! The problem was in client.c in the send statement. It should read: [ICODE] send(sockfd,&(msg.a),sizeof(msg.a),0); [/ICODE] Basic question about endianness 13 Years Ago by pdk123 Hello, Is the endianess can be for the nibble boundaries ? Because i have defined a class, and try to access the array with a pointer of class type. typedef unsigned char uint8; class A{ public: uint8 a:4; uint8 b:4; }; int _tmain(int argc, _TCHAR* argv[]) { uint8 temp = 0xfa; A * … Re: Basic question about endianness 13 Years Ago by Kanoisa Well to my understanding ptr_a->a would be the first 4 bits (lower 4) so it should indeed be 0x0A as when we read hex remember we read right to left. so when you assign 4bits and 4bits your working right to left i think. Dont quote me on that but thats what i think your code is doing. Re: Basic question about endianness 13 Years Ago by arkoenig If you want your program to be reliable, I suggest you look for a different way of solving your problem. You have a pointer to one type (uint8) and you casted it to a pointer to a different type (A). Compilers are under no obligation to make such a cast behave in any particular way, and the more aggressive the compiler is about optimizing, the … Re: Basic question about endianness 13 Years Ago by pdk123 @arkoenig, thankyou very much for pointing out the problem with typecasting .. yes , typecasting needs to be avoided !. As i am trying to modify the existing code, which is somehow working !, i donot want to touch that part as of now. I need to add another functionality, after that works, i plan to do this as part of the code cleanup. Please explain the code on how does bit wise operator works..also Endianness.. 12 Years Ago by surajrai Hi All, I am trying to understand shift operator which is used in my project. What I came to know from google is that Bit shifting allows for compact storage of similar data as a single integral value. But how does that work. and what is the advantage. Can you explain me the part below program whats exactly happening in below lines. The code is …