Re: Emulating a 64-bit long with only 32 bits: code anyone?

> My apologies if this is a FAQ. I'm designing a Java system for a machine
> that has only 32-bit longs (though it does have 64-bit doubles). I'm
> hoping that someone may know where you can find open source for code which
> manipulates 64-bit longs (multiply, divide, subtract, add, shift, bitwise
> and logical operations, etc.) using only 32 bits


The open-source joeq project (http://joeq.sourceforge.net) includes
100% Java code to perform various operations on both signed and
unsigned 32/64-bit integers, using only the default (signed) 32-bit
integer type. It's not fast, but it should work correctly as a
drop-in replacement for Java 64-bit arithmetic.


John Whaley
joewhaley@sourceforge.net

Return to the comp.compilers page.
Search the comp.compilers archives again.