Porting 32 bit C++ code to 64 bit - is it worth it? Why?

Question

I am aware of some the obvious gains of the x64 architecture (higher addressable RAM addresses, etc)... but:

• What if my program has no real need to run in nati

Answer 1

It depends on whether your code is an application or a reusable library. For a library, keep in mind that the client of that library may have good reasons to run in 64-bit mode, so you have to ensure that your scenario works. This may also apply to applications when they are extensible via plugins.