Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!samsung!uunet!ingr!b11!doyle
From: doyle@b11.ingr.com (Doyle Davidson)
Newsgroups: comp.windows.x
Subject: Re: Application program strange error
Message-ID: <6672@b11.ingr.com>
Date: 22 Nov 89 22:21:59 GMT
References: <193@hal.CSS.GOV>
Organization: Intergraph Corp. Huntsville, AL
Lines: 34

In article <193@hal.CSS.GOV>, nancie@hal.CSS.GOV (Nancie Matson) writes:
> but every time I run the program I get
> 		asin: DOMAIN error
> printed to the console window.  
> 
> Does anyone have any thoughts about this error.  

I have seen this before and as best I can remember, it occurs
in lines with join style = JoinRound and line width of 1 (might
have happened with width=0 too but I don't think so).

There is some code in the round end cap routine that does something like:

foo = width / 2;
...
val = asin(1.0 / foo);

And for width of one this produces asin(1.0 / (1/2)) == asin(2.0) !!!

Try changing your line width or join style and see if it goes away.

If not, then it's something else!

Doyle
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Doyle C. Davidson              |
Intergraph Corp.               |  These comments are...
Workstation Graphics Standards |
1 Madison Industrial Park      |
Huntsville, AL 35806           |
(205) 772-2000                 |         X-clusively my own.
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