--- libecb/ecb.h	2011/05/30 18:30:00	1.30
+++ libecb/ecb.h	2011/05/31 21:10:37	1.31
@@ -184,7 +184,11 @@
 ECB_HEADER_INLINE ecb_bool ecb_little_endian (void) ecb_const;
 ECB_HEADER_INLINE ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; };
 
-#define ecb_mod(m,n) ((m) < 0 ? ((n) - (-(m) % (n))) : ((m) % (n)))
+#if ECB_GCC_VERSION(3,0)&&0
+# define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
+#else
+# define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
+#endif
 
 #if ecb_cplusplus_does_not_suck
 // does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm)