How do you split a 64bit number into high 32 bits and low 32 bits in VBScript?

Question

I've got a 64 bit number in VBScript (WScript) that I want to divide into 32 bit high part and low part. The number is represented as a string (in base 10). The largest supported primitive is a 53 bit double, so I can't do a usual modulus op to get the bits and I can't bit shift in VBScript. Also, all numbers are signed, so you can only operate 2^31 with primitives.

Curious if anyone could point to an algorithm to handle bitwise operations entirely in strings with VBScript? Or more simply... be able to convert a FILETIME number string to it's respective 32 bit high part and 32 bit low part.

Thanks, Chenz

Answer 1

There is a library called Megamath for doing similar kind of operations.. check out this link

http://sourceforge.net/projects/megamath/files/