From: frabb AT worldaccess DOT nl
Newsgroups: comp.os.msdos.djgpp
Subject: square root
Date: Fri, 31 Jan 97 19:18:29 GMT
Organization: World Access
Lines: 26
Message-ID: <N.013197.201829.12@hrv2-5.worldaccess.nl>
NNTP-Posting-Host: hrv2-5.worldaccess.nl
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

I am trying to compiloe this program:

/* find out about sqrt */
#include <stdio.h>

main()
{
long double dest, srce = 2.0;
dest = sqrt(srce);
printf("%.18Lf\n",dest);
asm ("fsqrt %1,%0" : "=f" (dest) :  "f" (srce));
printf("%.18Lf\n",dest);
}


There is an error in the asm line, but I can't find it. And yes, I did try to 
find it in Info, and in the faq.

The purpose of the program is to see if there is a difference in the two ways 
to do sqrt. A call to sqrt() gives a double result. Using the hardware FPP 
instruction fsqrt directly should produce a long double. 
Maybe I should download the library sources, but 20:15 hours is a very bad time 
to do so...

frank abbing.