Error in kdeartwork in screensavers added from #70246

[Michael Nottebrock]

vec3.cpp: In function `static double vec3<double>::cos_angle(const 
vec3<double> &, const vec3<double> &)':
vec3.cpp:96:   instantiated from here
vec3.cpp:80: `NAN' undeclared (first use this function)
vec3.cpp:80: (Each undeclared identifier is reported only once
vec3.cpp:80: for each function it appears in.)
gmake[4]: *** [vec3.o] Error 1
gmake[4]: Leaving directory 
`/tmp/a/ports/x11-themes/kdeartwork/work/kdeartwork/kscreensaver/kdesavers'

This is on FreeBSD 4-STABLE (gcc 2.95). In the source there's this bit:

#ifndef _ISOC99_SOURCE
// NAN is not defined by default for gcc 2.95. Enable the ISO C99 extensions
// which includes the definition of NAN.
#define _ISOC99_SOURCE 1
#endif

but it obviously doesn't work. What to do?

-- 
   ,_,   | Michael Nottebrock               | lofi at freebsd.org
 (/^ ^\) | FreeBSD - The Power to Serve     | http://www.freebsd.org
   \u/   | K Desktop Environment on FreeBSD | http://freebsd.kde.org
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