libdeng2: Added ceilPow2

skyjake · Dec 5, 2013 · 8065cbf · 8065cbf
1 parent a72cef7
commit 8065cbf
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/doomsday/libdeng2/include/de/math.h b/doomsday/libdeng2/include/de/math.h
@@ -152,6 +152,13 @@ inline dint cmp(Type const &a, Type const &b) {
     return 0;
 }
 
+template <typename IntType>
+IntType ceilPow2(IntType const &num) {
+    IntType cumul;
+    for(cumul = 1; num > cumul; cumul <<= 1) {}
+    return cumul;
+}
+
 } // namespace de
 
 #endif /* LIBDENG2_MATH_H */