Positive and negative NaN!?

blitz.mod/blitz_cclib.c

@@ -2,8 +2,10 @@
 #include "blitz.h"
 #include <math.h>
 
-float bbNANf = 0.0/0.0;
-double bbNANd = 0.0/0.0;
+float bbPOSNANf = 0.0/0.0;
+double bbPOSNANd = 0.0/0.0;
+float bbNEGNANf = -0.0/0.0;
+double bbNEGNANd = -0.0/0.0;
 float bbPOSINFf = 1.0/0.0;
 double bbPOSINFd = 1.0/0.0;
 float bbNEGINFf = -1.0/0.0;

blitz.mod/blitz_cclib.h

@@ -9,8 +9,10 @@
 extern "C"{
 #endif
 
-float bbNANf;
-double bbNANd;
+float bbPOSNANf;
+double bbPOSNANd;
+float bbNEGNANf;
+double bbNEGNANd;
 float bbPOSINFf;
 double bbPOSINFd;
 float bbNEGINFf;