[AD] exswitch.c patch

[Stepan Roh <sroh7497@xxxxxxxxxx>]

Yet another small patch from me. This one is for exswitch to be able to
show fractals on non-Intel processors :

--- exswitch.c.orig	Mon Feb  7 14:53:08 2000
+++ exswitch.c	Mon Feb  7 15:44:28 2000
@@ -157,7 +157,10 @@
       zi = ti + ci;
    }
 
-   c = sqrt(zi*zi + zr*zr) * 256;
+   if ((zi != zi) || (zr != zr))
+      c = 0;
+   else
+      c = sqrt(zi*zi + zr*zr) * 256;
 
    if (c > 255)
       c = 255;

Non-Intel processors (in my case IP and Sparc) handles arithmetics with
NaN different way than Intel.

Stepan Roh