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During the transition from 16 to 32 bit in the 80s, int was either 16 or 32 bit. Using the current 64 bit transition nomenclature, I understand there was a pretty even spread of ILP32 and LP32 machines. At the time I believe it was understood that int would always follow the register or pointer width for any given architecture and that long would remain 32 bit. Fast forward 25 years, I see that LP64 is pretty mainstream, but until I encountered 64 bit platforms [my discovery of desktop Linux in 2007 :)], I always expected IP64 to be the next logical step. Was this (LP64) the expected evolution for 64bit? How does the char ≤ short ≤ int ≤ long relationship fit into this emerging scheme of fixing an integer type to each platform we leave behind? How do these transition schemes relate to the use of (your choice of {l,u}case ) WORD / DWORD on various platforms? Some areas of Windows still contain INT forms that are 16bit. Will Windows grow out of LLP64 or is it too late? Why was int chosen to be left behind this time, as opposed to during the 32bit transition?

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