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Origin of Cardinal=Dword?

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beethead

Post subject: Origin of Cardinal=Dword?

Posted: Thu May 28, 2020 6:15 pm

Joined: Tue Dec 03, 2019 11:39 am
Posts: 9

I was trying to find an alias for "dword" and from my Pascal experience the word "cardinal" comes to mind. The meaning of "dword" is very straight forward, double word or 4-bytes. Cardinal is a mathematical term but why was it chosen to represent a dword or 32-bit number?

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BitWise

Post subject: Re: Origin of Cardinal=Dword?

Posted: Thu May 28, 2020 6:53 pm

Joined: Tue Mar 02, 2004 8:55 am
Posts: 996
Location: Berkshire, UK

Cardinals in Pascal are unsigned.
In the C world 'long' is at least 32-bits.

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Last edited by BitWise on Thu May 28, 2020 7:20 pm, edited 1 time in total.

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BigEd

Post subject: Re: Origin of Cardinal=Dword?

Posted: Thu May 28, 2020 7:14 pm

Joined: Thu Dec 11, 2008 1:28 pm
Posts: 10938
Location: England

Indeed, cardinals are for counting, mathematically speaking, and unsigned numbers are also good for counting.

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