X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=flower%2Finclude%2Freal.hh;h=7345079680082673f73bb85760384ea6c3d3adf1;hb=058370efc7e9710f149d0f444328bb1fcd7bdec1;hp=0533af2111a5510ce0624bf674f805fa8b5a1563;hpb=01ddcb81463d7a68530971100469d3e2baf8c94b;p=lilypond.git

diff --git a/flower/include/real.hh b/flower/include/real.hh
index 0533af2111..7345079680 100644
--- a/flower/include/real.hh
+++ b/flower/include/real.hh
@@ -1,16 +1,58 @@
+/*
+  This file is part of LilyPond, the GNU music typesetter.
+
+  Copyright (C) 1997--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
+
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef REAL_HH
 #define REAL_HH
 
-
-#include <builtin.h>
-#include <minmax.h>
-#include <math.h>
+#include <algorithm>
+#include <climits>
+#include <cmath>
+using namespace std;
 
 typedef double Real;
+extern const Real infinity_f;
+
+/* namespace std { */
+
+template<class T> inline T abs (T x)
+{
+  return x > 0 ? x : -x;
+}
+
+/* } namespace std */
 
 inline Real
-distance(Real x,Real y)
+distance (Real x, Real y)
+{
+  return abs (x - y);
+}
+
+template<class T> inline int sign (T x)
 {
-    return abs(x-y);
+  if (x)
+    return x > T (0) ? 1 : -1;
+  return 0;
 }
+
+template<class T> inline T sqr (T x)
+{
+  return x * x;
+}
+
 #endif