I am trying to understand the size of a struct based on it’s members as described a brief tutorial on data alignment (see here. The article states that "All data is naturally aligned within the structure. If type is located at address 0 the following double x is located with an offset of 8 at… Read More Reducing the size of struct by changing struct member declaration order

I want to improve the data locality of the following structure: #include <stdio.h> struct double16{ double v0; double v1; double v2; double v3; double v4; double v5; double v6; double v7; double v8; double v9; double v10; double v11; double v12; double v13; double v14; double v15; };/* expected size is 128 bytes*/ // test… Read More Aligning an structure to reduce the cache hits?

I put the whole code but, of course, it’s in different files (.h and .c files) typedef unsigned char ubyte; typedef unsigned int uint; #include<stdbool.h> typedef struct Cube { ubyte n; ubyte e; ubyte s; ubyte w; } Cube; typedef struct Piece { Cube c; bool is_main; char offset_n; char offset_s; } Piece; typedef struct… Read More malloc and C alignment: is this hand-made optimization safe?