I am searching for a fast way of iterating over all possible assignments of bits set in a mask.Example:

## Creating a mask with N least significant bits set

I would like to create a macro or function1 mask(n) which given a number n returns an unsigned integer with its n least significant bits set. Although this seems like it should be a basic primitive with heavily discussed implementations which compile efficiently - this doesn't seem to be the...

## C – Bitwise manipulation

I'm very new to C and i'm trying to understand bitwise operators in C I found this code in front of me (to convert 2 to 37)

## What does i+=(i&-i) do? Is it portable?

Let i be a signed integer type. Considerwhere initially i>0.Source: setter's code of an online coding puzzle.

## Java “x += y” and “x = x+y” yields different result

I came up with two expressions to assign value from a bit operation to a variable, and noticed "x+=y" and "x=x+y" yielded different results in this case:

## Is this an efficient way to parse function parameters?

So I am new to C#, but one thing I already like coming from other higher level languages is the ability to do bitwise operations in (close to) C. I have a bunch of functions where some or all parameters are optional, and I like switches, so I built a...