Do NSDouble, NSFloat, or other types than NSInteger exist?

Question

Over at In Cocoa do you prefer NSInteger or just regular int, and why?, there was mention of NSDouble and NSFloat, but I can\'t see a reference for

Answer 1

NSInteger exists because the int type varies in size between 32-bit and 64-bit systems. float and double don't vary in size the same way, so there's no need to have wrapper types for them.