What is a "packed" structure in C? - Stack Overflow
When structures are defined, the compiler is allowed to add paddings (spaces without actual data) so that members fall in address boundaries that are easier to access for the CPU. For …
Packed bit fields in c structures - GCC - Stack Overflow
I am working with structs in c on linux. I started using bit fields and the "packed" attribute and I came across a wierd behavior: struct __attribute__ ( (packed)) { int a:12; int b...
Use of #pragma in C - Stack Overflow
Oct 24, 2008 · 65 #pragma is used to do something implementation-specific in C, i.e. be pragmatic for the current context rather than ideologically dogmatic. The one I regularly use is …
c - #pragma pack effect - Stack Overflow
Aug 22, 2018 · 564 #pragma pack instructs the compiler to pack structure members with particular alignment. Most compilers, when you declare a struct, will insert padding between …
c - What is the meaning of "__attribute__ ( (packed, aligned (4 ...
Aug 2, 2012 · Data structure alignment is the way data is arranged and accessed in computer memory. It consists of two separate but related issues: data alignment and data structure …
struct - Force C++ structure to pack tightly - Stack Overflow
Jan 13, 2014 · Even if you pack the members together this way (and complicate the code for every member access by reinterpreting the bytes as whatever larger type), the struct will still …
c - pragma pack (n) vs pragma pack (push,n) - Stack Overflow
Oct 28, 2022 · What is the difference between pragma pack (n) and pragma pack (push,n) #pragma pack (pop) and #pragma pack () Can someone explain through an example ? Which …
Visual C++ equivalent of GCC's __attribute__ ( (__packed__))
I like this solution, however, it took me a long time to figure out that MSVC++ handles bitfields a little differently than GCC. I was using "int" bitfields of various sizes (1, 7, 8, 16) and …
c - Meaning of #pragma pack (2) - Stack Overflow
Oct 5, 2023 · Well it means that each member of a structure, class or union declared after the pragma that follows the first member of the structure is stored at a multiple of either the size of …
c - Pack high bit of every byte in ARM, for 64 bytes like AVX512 ...
Nov 26, 2024 · Pack high bit of every byte in ARM, for 64 bytes like AVX512 vpmovb2m? Asked 1 year ago Modified 9 months ago Viewed 414 times