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//--- forwarded letter ------------------------------------------------------- > X-Mailer: Microsoft Outlook Express 4.71.1712.3 > Date: Mon, 23 Feb 98 10:36:21 -0500 > From: "Tony" <ath@tir.com> > To: MIDRANGE-L@midrange.com > Reply-To: MIDRANGE-L@midrange.com > Subject: Base utility? > > I need some help. I have to find a way to squeeze as many unique identifiers > as I can into two positions. I also need it to increment easily. I've > considered converting to hex, but it just doesn't provide enough identifiers > within two positions. Is there a way to use a different base and simply > add 1 to get the next ID? How do I count from 00 to ZZ? > > base 10 = 00 thru 99 = 100 IDs and base 16(hex) = 00 thru FF = 256 IDs > > Tony > Hello Tony, I realise that a number of appenders have answered this and that you will probably use Peter Coffin's base36 example. However, most of the others suggested using a binary data type. Great idea in theory but a problem in RPG. RPG III/400 does not provide true binary support: a 2-byte RPG binary variable can only contain a maximum value of 9999 due to the way RPG messes about. RPG IV does provide true binary support but only if you define the variable as an INTEGER. In that case a 2-byte integer can hold a maximum value of 32767 because RPG integers are always signed numbers. If you are using a language other than RPG with true binary/integer support then this is not an issue but it may be of interest to others. Regards, Simon Coulter. //---------------------------------------------------------- // FlyByNight Software AS/400 Technical Specialists // Phone: +61 3 9419 0175 Mobile: +61 3 0411 091 400 // Fax: +61 3 9419 0175 E-mail: shc@flybynight.com.au // // Windoze should not be open at Warp speed. +--- | This is the Midrange System Mailing List! | To submit a new message, send your mail to "MIDRANGE-L@midrange.com". | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: david@midrange.com +---
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