--- rxvt-unicode/src/rxvtutil.h	2006/01/30 19:46:13	1.25
+++ rxvt-unicode/src/rxvtutil.h	2007/10/31 09:55:24	1.29
@@ -4,13 +4,14 @@
 #include <cstdlib>
 #include <cstring>
 
+using namespace std;
+
 #define PP_CONCAT_(a, b) a ## b
 #define PP_CONCAT(a, b) PP_CONCAT_(a, b)
 #define PP_STRINGIFY_(a) #a
 #define PP_STRINGIFY(a) PP_STRINGIFY_(a)
 
-// actually, some gcc-3.x versions work, too
-#define HAVE_GCC_BUILTINS (__GNUC__ >= 4)
+#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4))
 
 #ifndef __attribute__
 # if __GNUC__
@@ -63,7 +64,7 @@
 static inline
 T lerp (T a, U b, P p)
 {
-  return (int(a) * int(p) + int(b) * int(100 - p)) / 100;
+  return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
 }
 
 // some bit functions, xft fuck me plenty
@@ -91,7 +92,7 @@
 };
 
 /* simplevec taken (and heavily modified), from:
- * 
+ *
  *  MICO --- a free CORBA implementation
  *  Copyright (C) 1997-98 Kay Roemer & Arno Puder
  */