low-level – Tarik Billa

What is the best way to add two numbers without using the + operator?

September 24, 2023 by Tarik

In C, with bitwise operators: #include<stdio.h> int add(int x, int y) { int a, b; do { a = x & y; b = x ^ y; x = a << 1; y = b; } while (a); return b; } int main( void ){ printf( “2 + 3 = %d”, add(2,3)); return 0; } … Read more

How does CheatEngine’s speed hack work?

August 9, 2023 by Tarik

Three years later, I think I know enough to answer my own question. 🙂 A computer program usually communicates with the kernel using predefined functions called system calls. Each OS has a different set of calls but often they do similar things like — allocating memory, reading and writing files, or handling processes. According to … Read more