Large Integer Operations

[ConvertFromOldNGs]

by Chris Power >> Thu, 18 May 2000 23:33:13 GMT

The Jade Integer type is a 32-bit signed value, native to the Pentium processor. Many other Windows development tools now also support 64-bit integer operations and there are several Windows API functions that work with them and use them.

Although I can write my own Int64 operations using Binary[8] variables, I'd prefer to use any Jade-provided functions that might be available, for speed and reliability. Any bites? Are there any such functions
hidden away in Jade libraries?

Chris Power
cpower@unitec.ac.nz

[ConvertFromOldNGs]

by Krull >> Fri, 19 May 2000 6:55:53 GMT

Are there any such functions hidden away in Jade libraries?

Yes, unfortunately they are too well hidden for you to use directly right now


JADE uses 64-bit integer types internally for computation in a number of places, when large integer values need to be communicated via a JADE method they are passed or returned using the JADE Decimal type - see for example Application::relativeMachineTime or DbFile::getFileLength.

A JADE Decimal[20] provides the same precision as an int64 and can be used to provide 'int64 precision' arithmetic, it just won't provide the same performance.