Date: Wed, 31 May 2000 09:41:33 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: RadSurfer <Radsmail AT juno DOT com>
cc: djgpp AT delorie DOT com
Subject: Re: DJGPP: setvbuf()
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On Tue, 30 May 2000, RadSurfer wrote:

> How is   setvbuf   done?
> Is this an Interrupt Call of some kind ? such as available
> thru  DOS or BIOS calls?

It's not an interrupt call, it simply changes the size of the buffer
used by buffered I/O functions like getc, fscanf, fread, etc.

> I've been too lazy to try to dig up the specific LIBC
> source file that might shed some light on this

Please don't be lazy; the sources are freely available.  Most people
who know setvbuf by heart are pretty busy.