The Old New Thing

Why did the Win64 team choose the LLP64 model?

January 31, 2005 Jan 31, 2005 01/31/05

Raymond Chen

Over on Channel 9, member Beer28 wrote, "I can't imagine there are too many problems with programs that have type widths changed." I got a good chuckle out of that and made a note to write up an entry on the Win64 data model. The Win64 team selected the LLP64 data model, in which all integral types remain 32-bit values and only ...