// Multiply by a power of 2 x = x << 1; // x = x * 2 x = x << 6; // x = x * 64 // Divide by a power of 2 x = x >> 1; // x = x / 2 x = x >> 3; // x = x / 8 // Swap integers without a temporary variable a ^= b; // int temp = b b ^= a; // b = a a ^= b; // a = temp // Increment / Decrement (slower but good for obfuscating) i = -~i; // i++ i = ~-i; // i-- // Sign flipping i = ~i + 1; // or i = (i ^ -1) + 1; // i = -i // Modulo operation if divisor is power of 2 x = 131 & (4 - 1); // x = 131 % 4 // Check if an integer is even or odd (i & 1) == 0; // (i % 2) == 0 // Equality check (a^b) == 0; // a == b // Absolute value x < 0 ? -x : x; // abs(x) (x ^ (x >> 31)) - (x >> 31) // abs(x) // Equal sign check (both ints are pos or neg) a ^ b >= 0; // a * b > 0 // Rounding, ceiling, flooring (x + 0.5) >> 0; // round(x) (x + 1) >> 0; // ceil(x) x >> 0; // floor(x)