LabWindows 2006 no ViInt64 ViReal64

[zaius55]

So I downloaded some keysight drivers which I am planning on controlling via GPIB.  I am using LabWindows and was not able to build because ViInt64 and ViReal64 are not variable types.  I was able to get it to build by using the following...

//TODO Changed to ViInt32 bit value
//ViStatus _VI_FUNC AgN67xx_viWrite ( ViSession Vi, ViInt64 Count, ViChar Buffer[], ViInt64* ReturnCount );
//ViStatus _VI_FUNC AgN67xx_viRead ( ViSession Vi, ViInt64 BufferSize, ViChar Buffer[], ViInt64* ReturnCount );
ViStatus _VI_FUNC AgN67xx_viWrite ( ViSession Vi, ViInt32 Count, ViChar Buffer[], ViInt32* ReturnCount );
ViStatus _VI_FUNC AgN67xx_viRead ( ViSession Vi, ViInt32 BufferSize, ViChar Buffer[], ViInt32* ReturnCount );

I just replaced the ViInt64's with ViInt32's in the header.  Is this going to cause me a problem?  I'm not sure I even need this functions but they may be used internally in the driver set?

Appreciate your assistance!

[Cooking_Up_Code]

Hey zaius,

You should be alright with your current configuration, you just have to keep in mind ViInt32 will give a 32-bit integer as opposed to a 64-bit one. If you would like to use ViInt64, you'll need to upgrade to a newer version of LabWindows/CVI. Hope this helps.

[zaius55]

Thanks for the input sir.  I'm a EE recently thrown into the software world.  What about driver implementation needs a 64 bit integer? 🙂

[Cooking_Up_Code]

If you were using 64-bit integers on a 32-bit machine, then that means it would take two CPU process cycles for the 64-bit integer to be operated on. This comes from the natural abilities of a 32-bit vs 64-bit computer. Higher bitness can give higher resolution integers and there are some memory improvements from using a 64-bit computer as well. You can check out this article for some more details on 64 vs 32-bit operating systems.

https://www.ni.com/en/support/documentation/supplemental/09/using-national-instruments-products-on-3...