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A short note about macros
Good day folks.
Take a look at the following simple c source code:
#define NEW(T, N) Object_new(sizeof(T), T##Proto, N)
#define _(N) tmp.N
int main()
{
NEW(foo, bar);
_(blah);
return 0;
}
So, how the macros after pre-processor directive expand in the main function ( Read more... ) -
emacs gud library
To see what's going on inside entrails which compiler generated I use GUD module which is distributed with emacs by default ( Read more... ) -
reverse a string
One of the tasks on the technical interview for beginner C developer in my company is to reverse the string. There are two ways to accomplish this task: using arrays of characters or using pointers. The first way is boring, hence, I would like to examine the pointers approach. Let's see how the compiler translates C source code to assembly.
# ( Read more... ) -
Bitwise operators
Good day folks. Today I would like to talk about bitwise operators in C. According to K&R (page 45, pt. 2.9 Bitwise operators) there are six operators for bit manipulation:
- & AND;
- | OR;
- ^ XOR;
- << left shift ( Read more... ) -
Intel vs AT&T syntax
While I've been learning assembly language I've used to use Intel syntax because the author of the book which I read gerally used Intel syntax there. From my point of view it's easy to read for newcomers in assembly world. But if you look around through the internet forums, IRC channels, mailing lists, etc., you will find that the true maniacs use ( Read more... ) -
Hello world under the hood
Zhivago | zloy: you are an idiot.
Zhivago | zloy: Assembly cannot be used to explain how C works.
© from #c channel on irc.freenode.net
( Read more... )
