--- rxvt-unicode/src/rxvtutil.h	2006/01/12 00:35:39	1.17
+++ rxvt-unicode/src/rxvtutil.h	2006/01/29 20:51:28	1.21
@@ -1,6 +1,7 @@
 #ifndef RXVT_UTIL_H
 #define RXVT_UTIL_H
 
+#include <cstdlib>
 #include <cstring>
 
 #define PP_CONCAT_(a, b) a ## b
@@ -30,6 +31,14 @@
 
 template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
 
+// linear interpolation
+template<typename T, typename U, typename P>
+static inline
+T lerp (T a, U b, P p)
+{
+  return (int(a) * int(p) + int(b) * int(100 - p)) / 100;
+}
+
 // in range including end
 #define IN_RANGE_INC(val,beg,end) \
   ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
@@ -258,14 +267,14 @@
     void erase (iterator first, iterator last)
     {
         if (last != first) {
-            memmove (first, last, (end ()-last)*sizeof (T));
+            memmove (first, last, (end () - last) * sizeof (T));
             _last -= last - first;
         }
     }
     void erase (iterator pos)
     {
         if (pos != end ()) {
-            memmove (pos, pos+1, (end ()- (pos+1))*sizeof (T));
+            memmove (pos, pos+1, (end () - (pos+1)) * sizeof (T));
             --_last;
         }
     }
@@ -393,9 +402,19 @@
   ~stringvec ()
   {
     for (char **c = begin (); c != end (); c++)
-      delete [] *c;
+      free (*c);
   }
 };
 
+// return a very temporary (and never deallocated) buffer. keep small.
+void *rxvt_temp_buf (int len);
+
+template<typename T>
+inline T *
+rxvt_temp_buf (int len)
+{
+  return (T *)rxvt_temp_buf (len * sizeof (T));
+}
+
 #endif