--- global.h	2003/02/22 08:49:44	1.21.2.1
+++ global.h	2003/03/16 12:04:14	1.21.2.2
@@ -210,6 +210,7 @@
 #define SIGN(X)   (((X)>0)?1:-1)
 #define CLIP(X,AMIN,AMAX)   (((X)<(AMIN)) ? (AMIN) : ((X)>(AMAX)) ? (AMAX) : (X))
 #define DIV_DIV(a,b)    (((a)>0) ? ((a)+((b)>>1))/(b) : ((a)-((b)>>1))/(b))
+#define SWAP(_T_,A,B)    { _T_ tmp = A; A = B; B = tmp; }
 
 
 #endif							/* _GLOBAL_H_ */