[cvs-nhc98] Backtrack from using C fns `isinf' and `isnan'. Not all p

[Malcolm Wallace]

malcolm: Fri Nov  2 18:49:00 CET 2001

Update of /usr/src/master/nhc/src/prelude/Prelude
In directory hinken:/tmp/cvs-serv13159

Modified Files:
	RealFloat_Double.hs 
Log Message:
Backtrack from using C fns `isinf' and `isnan'.  Not all platforms have
them, and if we are going to do IEEE arithmetic properly, we should
really do a configure-time test for IEEE availability.