X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=flower%2Finclude%2Freal.hh;h=d7208b4e560847edbb86687a022933476ad92a14;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=2e8b160a22d02e71f0cbdc8c07e8515d07ef273d;hpb=1a66290a98e7de8d6d41485b5b71a9f7e1fe35c7;p=lilypond.git

diff --git a/flower/include/real.hh b/flower/include/real.hh
index 2e8b160a22..d7208b4e56 100644
--- a/flower/include/real.hh
+++ b/flower/include/real.hh
@@ -1,28 +1,58 @@
 /*
-  real.hh -- declare Real
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the Flower Library
+  Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1997 Han-Wen Nienhuys <hanwen@stack.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 <limits.h>
+#include <algorithm>
+#include <climits>
+#include <cmath>
+using namespace std;
 
 typedef double Real;
-const Real infinity_f = HUGE_VAL;
+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)
+{
+  if (x)
+    return x > T (0) ? 1 : -1;
+  return 0;
+}
+
+template<class T> inline T sqr (T x)
 {
-    return abs (x-y);
+  return x * x;
 }
 
 #endif