lily/misc.cc

   1 /*
   2   misc.cc -- implement various stuff
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include <math.h>
  10
  11 #include "item.hh"
  12 #include "misc.hh"
  13 #include "moment.hh"
  14
  15 int
  16 intlog2(int d) {
  17   int i=0;
  18   while (!(d&1))
  19     {
  20         d/= 2;
  21         i++;
  22     }
  23   assert (!(d/2));
  24   return i;
  25 }
  26
  27 double
  28 log_2(double x) {
  29   return log (x)  /log (2.0);
  30 }
  31
  32 #if 1
  33 Interval
  34 itemlist_width (const Array<Item*> &its)
  35 {
  36   Interval iv ;
  37   iv.set_empty();
  38
  39   for (int j =0; j < its.size(); j++)
  40     {
  41         iv.unite (its[j]->width());
  42
  43     }
  44   return iv;
  45 }
  46
  47 #endif