release: 1.0.1

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

diff --git a/flower/include/real.hh b/flower/include/real.hh
index 0533af2111a5510ce0624bf674f805fa8b5a1563..50459fb57fe1e4818de4534b3015f61264041467 100644 (file)
--- a/flower/include/real.hh
+++ b/flower/include/real.hh
@@ -1,16 +1,54 @@
+/*
+  real.hh -- declare Real
+
+  source file of the Flower Library
+
+  (c)  1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
+
+
 #ifndef REAL_HH
 #define REAL_HH
 
 
-#include <builtin.h>
-#include <minmax.h>
 #include <math.h>
+#include <limits.h>
 
 typedef double Real;
+const Real infinity_f = HUGE_VAL;
+
+template<class T> inline T abs (T x)
+{
+  return x > 0 ? x : -x;
+}
+
+template<class T> inline int sign (T x)
+{
+  if (x)
+    return x > 0 ? 1 : -1;
+  return 0;
+}
+
+template<class T> inline T max (T x, T y)
+{
+  return x >? y;
+}
+
+template<class T> inline T sqr (T x)
+{
+  return x*x;
+}
+
+
+template<class T> inline T min (T x, T y)
+{
+  return x <? y;
+}
 
 inline Real
-distance(Real x,Real y)
+distance (Real x,Real y)
 {
-    return abs(x-y);
+    return abs (x-y);
 }
+
 #endif