From:	leger_v AT bluewin DOT ch
Newsgroups:	comp.os.msdos.djgpp
Subject:	error idiv :divide by zero
Date:	Fri, 26 Dec 1997 23:34:09 +0100
Organization:	Unisource Business Networks
Lines:	20
Message-ID:	<34A430E1.2495@bluewin.ch>
NNTP-Posting-Host:	bel7pub74.bluewin.ch
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

look at this program :
static unsigned char quotient;
static unsigned char remainder;
main()
{ asm("pusha
       movb $8,%al       ;2 samples numbers
       movb $3,%cl       ;
       idiv %cl
       mov %al, _quotient
       mov %ah, _remainder
       popa");
  printf("8 : 3 = %d and remainder : %d" quotient, remainder);
}
this program works fine. But if I use word register like %ax
(movw $998, %ax)and %cx(movw $98, %cx)(naturally quotient and remainder
are unsigned int)the program doesn't function : it writes: "error divide
by zero). How could I use bigger registers (word or dword) without
having "divide by zero"?
Thanks
Patrick

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