* The grand 2005-2006 replace.

[lilypond.git] / flower / include / interval.hh

diff --git a/flower/include/interval.hh b/flower/include/interval.hh
index a6a92f204de580a6be177361b240495e7eb21c52..9190f28544597f53664f78815f7b753a6a97fb21 100644 (file)
--- a/flower/include/interval.hh
+++ b/flower/include/interval.hh
@@ -1,12 +1,14 @@
 /*
   interval.hh -- part of flowerlib
 
-  (c) 1996--2005 Han-Wen Nienhuys
+  (c) 1996--2006 Han-Wen Nienhuys
 */
 
 #ifndef INTERVAL_HH
 #define INTERVAL_HH
 
+#include <math.h>
+
 #include "flower-proto.hh"
 #include "drul-array.hh"
 
@@ -74,7 +76,7 @@ struct Interval_t : public Drul_array<T>
     : Drul_array<T> (src)
   {
   }
-  
+
   Interval_t (T m, T M) : Drul_array<T> (m, M)
   {
   }
@@ -109,7 +111,7 @@ struct Interval_t : public Drul_array<T>
   }
   String to_string () const;
 
-  bool contains (T r);
+  bool contains (T r) const;
   void negate ()
   {
     T r = -elem (LEFT);