I am going though some C code written for the Microchip C30 compiler and I often see structs defined as follows: typedef struct __attribute__((__packed__)) { IP_ADDR MyIPAddr; // IP address IP_...

The spec (GCC type attributes amongst others) states that __attribute__((packed)) can be applied to a struct or a union. Since all union fields' storage overlap, what does the attribute actually do...

Are unpacked struct in packed struct automatically packed by GCC? In other words, do __packed__ attribute automatically propagates to nested structures? That is to say: struct unpackedStruct{ int1...

I have some code on a Cortex-M4 microcontroller and'd like to communicate with a PC using a binary protocol. Currently, I'm using packed structs using the GCC-specific packed attribute. Here is a ...

While reviewing some code in our legacy Delphi 7 program, I noticed that everywhere there is a record it is marked with packed. This of course means that the record is stored byte-for-byte and not ...

I have a struct of 4 fields of types that come from template parameters: template <typename T1, typename T2, typename T3, typename T4> struct __attribute__((aligned(8))) four_tuple { typede...

I use g++ to compile code with packed fields. However, I receive an error when trying to return a reference to a packed field. Example: struct __attribute__((packed)) Foo { int* ptr; uint16_t ...

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:32; ...

I have a packed struct defined as shown below typedef struct packed { logic bit1; logic [7:0] byte1; } MyPackedStruct; MyPackedStruct myPackedStruct; Is there any SV built in function that I ...

Is it possible in C to get the size of the following structure to be 2? #include <stdio.h> struct union_struct { char foo; char bar : 2; union { char foobar1 : 6; char foobar2 : 6; };...

In C/C++ you always have SizeOf(array[N] of T) = N * SizeOf(T); In Pascal/Delphi you can use 'packed array' to be sure that the above assert is true, but does 'packed' specifier have any practic...

It is C language.It is written that: typedef struct __attribute__((packed, aligned(4))) Ball { float2 delta; float2 position; //float3 color; float size; //int arcID; //float arcStr; } Ball_...

As a continuation of my previous question, Simon's method to find the list product of a PackedArray is fast, but it does not work with negative values. This can be "fixed" by Abs with minimal time...

In Mathematica a vector (or rectangular array) containing all machine size integers or floats may be stored in a packed array. These objects take less memory, and some operations are much faster on...

jquery-1.4.2.min.js is 71.8KB Same file compressed through this tool, with gzip enabled, becomes 32.9 KB Which is better? If latter, why doesn't jQuery provide a packed file too instead of just un...