SpritesMind.Net

Hi!

I want to read or write a nibble in U16 variable, for example, nible 0 = 12 or nible 3 = 1.
Can I access 4 bits individualy with good a performance?

__3___2____1___0
0000-1111-0000-1111

Union-struct is the nicest way, but nibble access won't be fast no matter what.

You can also use bit fields in a structure, but as Cero said, nibble manipulation aren't really fast.
I think that using boolean logic operation directly on your u16 variable is the fastest way to go: To change nibble 2 for instance