From:	yorka AT dlc DOT fi (Atte Koivula)
Newsgroups:	comp.os.msdos.djgpp
Subject:	FPU instructions in NASM
Date:	Fri, 15 May 1998 20:49:47 GMT
Organization:	Majik
Lines:	18
Message-ID:	<355ca863.1204556@news.dlc.fi>
NNTP-Posting-Host:	kou74.pp.dlc.fi
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi,

I have a problem with FPU instructions in NASM. I'm trying to write a
program that takes a float value as input and then gives the square
root of that value as output (either by returning the result or by
moving it in a variable that has been given as an argument for the
function). 

If I understood the idea correctly (by experimenting), I should store
the number into the FPU stack (possibly with fld or something), then
do a 'fsqrt' and then store the output to a variable (fst or something
like that), but I do not know the proper syntax as pieces of example
source code on the subject are scarce to say the least.

I realize that this message should be in an asm newsgroup, but since
many of you use NASM I thought I'd post it here.

-aK

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