From: Kai Dietrich <toepferei DOT dietrich AT t-online DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: 128 bit integer
Date: Wed, 8 Aug 2001 19:20:23 +0200
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Message by Lawrence Rust <lvr AT NOsoftSPsystemAM DOT co DOT uk> on: 08.08.01 17:07:35


THX, this was the answer I needed. It is a great help.

>unsigned char a[2], b[2], sum[2], carry;
>
>sum[0] = a[0] + b[0];
>carry = sum[0] < a[0] ? 1 : 0;
>sum[1] = a[1] + b[1] + carry;
>
>Subtraction follows similarly.

is this correct:
sum[0] = a[0] - b[0];
carry = sum[0] > a[0] ? 1 : 0;
sum[1] = a[1] - b[1] - carry;



>NB it's not good etiquette to post in HTML to usenet groups.

Sorry, it was my ng reader. hope this posting is not HTML