skyline vertical spacing.

[lilypond.git] / lily / include / misc.hh

diff --git a/lily/include/misc.hh b/lily/include/misc.hh
index 892dca89f2145d33799bd3e55719a5c1ca473095..4303d3b7b59e9f7ef7054a30143f3db173e73d3f 100644 (file)
--- a/lily/include/misc.hh
+++ b/lily/include/misc.hh
@@ -1,26 +1,42 @@
+/*
+  misc.hh -- declare miscellaneous functions.
+
+  source file of the GNU LilyPond music typesetter
+
+  (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+
 #ifndef MISC_HH
 #define MISC_HH
 
-#include <stdlib.h>
+#include <cstdlib>
+using namespace std;
 
-#include "real.hh"
-#include "array.hh"
+#include "std-vector.hh"
 #include "interval.hh"
 
-double log_2 (double x) ;
+double log_2 (double x);
 int intlog2 (int d);
 
 inline int
 sign (int i)
 {
-  if (i<0)
+  if (i < 0)
     return -1;
   else if (i)
     return 1;
   else return 0;
 }
 
-Interval quantise_iv (Array<Real> positions, Real x);
+inline Real
+linear_interpolate (Real x, Real x1, Real x2, Real y1, Real y2)
+{
+  return (x2 - x) / (x2 - x1) * y1
+    + (x - x1) / (x2 - x1) * y2;
+}
+
+Real directed_round (Real f, Direction d);
 
+Real peak_around (Real epsilon,  Real threshold, Real x);
 #endif