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- apply the patch
- compile with -DLNUM_INT64

You will get a mixed mode double / int64 Lua.

If you only need to store 64-bit values from the C side, have you considered using light userdata (storing them as pointers). More often than not, that is enough.


Martin, Marcus kirjoitti 1.6.2009 kello 20:17:

Ah, yes, you are correct. Unfortunately I need the full 64 bit integer size in Lua. How do I get that?

-----Original Message-----
From: [ ] On Behalf Of Javier Guerra
Sent: Monday, June 01, 2009 1:07 PM
To: Lua list
Subject: Re: 64 bit integers

On Mon, Jun 1, 2009 at 11:59 AM, Martin, Marcus <> wrote:
How do I use 64 bit integers in Lua? By default on my system (VS 2005, WinXP) I get 32 bit integers. Do I need to recompile the entire library with 64 bit support? That would make all integers 64 bit right? Is there a mixed

by default you don't get integers, the 'Number' type is a double (64
bit, IIRC).  it has enough precision to express 52 bit integers