Is it possible to convert floats from big to little endian? I have a value from a PowerPC(big endian)platform that I am send via TCP to a Windows process (little endian). This value is a float, but when I "memcpy" the value into a win32 float type and then call _byteswap_ulongon that value, I always get 0.0000? What am I doing wrong...
Hey everyone, got a quick question that I can't seem to find anything about... I'm working on a project that requires flag enumerations with a large number of flags (up to 40-ish), and I don't really feel like typing in the exact mask for each enumeration value: public enum MyEnumeration : ulong { Flag1 = 1, Flag2 = 2, Flag...
I have an algorithm that uses the following OpenSSL calls: HMAC_update() / HMAC_final() // ripe160 EVP_CipherUpdate() / EVP_CipherFinal() // cbc_blowfish These algorithm take a unsigned char * into the "plain text". My input data is comes from a C++ std::string::c_str() which originate from a protocol buffer object as a encoded UTF-8 ...
Recently, I try to use the boost::spirit::qi binary endian parser to parse some binary data depends on the endianness of the Platform. There is a simple example, like following: Using declarations and variables: using boost::spirit::qi::little_word; using boost::spirit::qi::little_dword; using boost::spirit::qi::little_qword; boost:...
NSLog function accepts printf format specifiers. My question is about %x specifier. Does this print hex codes as sequence on memory? Or does it have it's own printing sequence style? unsigned int a = 0x000000FF; NSLog(@"%x", a); Results of above code on little or big endian processors are equal or different? And how about NSString's -...
For this code: #include<stdio.h> void hello() { printf("hello\n"); } void bye() { printf("bye\n"); } int main() { printf("%p\n", hello); printf("%p\n", bye); return 0; } output on my machine: 0x80483f4 0x8048408 [second address is bigger in value] on Codepad 0x8048541 0x8048511 [second address is smaller in v...
Both ideone.com and codepad.org have Little-Endian architechtures. I want to test my code on some machine with Big-Endian architechture (for example - Solaris - which I don't have). Is there some easy way that you know about? ...
I am studying how to use boost spirit Qi binary endian parser. I write a small test parser program according to here and basics examples, but it doesn't work proper. It gave me the msg:"Error:no match". Here is my code. #include "boost/spirit/include/qi.hpp" #include "boost/spirit/include/phoenix_core.hpp" #include "boo...
I am writing a Wireshark dissector plugin for a protocol that does not hton it's data, and I need to extract a 64-bit data value without doing any endian conversions. Is there a version of tvb_get_ntoh64 included in the Wireshark libraries that does not do the ntoh? ...
I read about Endianness and understood squat... so I wrote this main() { int k = 0xA5B9BF9F; BYTE *b = (BYTE*)&k; //value at *b is 9f b++; //value at *b is BF b++; //value at *b is B9 b++; //value at *b is A5 } k was equal to A5 B9 BF 9F and (byte)pointer "walk" o/p was 9F BF b9 A5 so I get it byte...
I'm using IAR Embedded Workbench for ARM (ARM7TDMI-S) and the majority of my work is done using little-endian format. However, I saw in the manual that I can do something like : __big_endian int i, j; to declare those two variables as big endian (while the rest of the app as little endian). This seems like a fantastic feature, but w...
Hi I'm writing a client and a server for a realtime offshore simulator, and, as I have to send a lot of data through a socket, I'm using binary data to maximize the ammount of data I can send. I already know about integers endianness, and how to use htonl and ntohl to circumvent endianness issues, but my application, as almost all simul...
Suppose this code: unsigned char list[3] = { 1, 2, 3 }; struct _struct{ unsigned char a; unsigned char b; unsigned char c; } *s; s = ( _struct * ) list; Can I assume that always s->a == 1, s->b == 2, s->c == 3 ? Or it will depend on the system's endianness or memory alignment? ...
Hi, I am in Mac. With Cocoa, I know with normal files we can directly read or write without worrying about the endianness. When processor endian awareness is required? Regards, Dhana. ...
Hi, I'm working on an implementation of the memcache protocol which, at some points, uses 64 bits integer values. These values must be stored in "network byte order". I wish there was some uint64_t htonll(uint64_t value) function to do the change, but unfortunately, if it exist, I couldn't find it. So I have 1 or 2 questions: Is the...
I want to know how to convert big-endian numbers to native numbers in Delphi. I am porting some C++ code in that I came across: unsigned long blockLength = *blockLengthPtr++ << 24; blockLength |= *blockLengthPtr++ << 16; blockLength |= *blockLengthPtr++ << 8; blockLength |= *blockLengthPtr; unsigned long dataLength = *dataLengthPtr++...
I have a few questions about endian-ness that are related enough that I warrant putting them in as one question: 1) Is endian-ness decided by .Net or by the hardware? 2) If it's decided by the hardware, how can I figure out what endian the hardware is in C#? 3) Does endian-ness affect binary interactions such as ORs, ANDs, XORs, or sh...
I need to write an integer to a byte array such that leading zeros are omitted and the bytes are written in big endian order. Example: int original = 0x00123456; byte[] encoded = Encode(original); // == new byte[] { 0x12, 0x34, 0x56 }; int decoded = Decode(encoded); // == 0x123456 My Decode method: private static int ...
Hi, I'm trying to implement TMX files in Android and I was hoping someone could help. Based on the TMX guide, in order to get the GID's I have to first base64 decode the string, then gunzip the resulting data if the compression attribute is set to "gzip" as in the above example. Finally, you can read 4 bytes at a time for each GID f...
I was wondering why both utf-16le and utf-16be exists? Is it considered to be "inefficient" for a big-endian environment to process a little-endian data? Currently, this is what I use while storing 2 bytes var locally: unsigned char octets[2]; short int shotint = 12345; /* (assuming short int = 2 bytes) */ octets[0] = (shortint) ...