src/misc.cc

   1 #include <math.h>
   2
   3 #include "item.hh"
   4 #include "misc.hh"
   5 #include "glob.hh"
   6 #include "moment.hh"
   7
   8
   9 // depreciated, see struct Duration*
  10 Moment
  11 wholes(int dur, int dots)
  12 {
  13     if (!dur)
  14         return 0;
  15
  16     Moment f = Rational(1)/Moment(dur);
  17     Moment delta = f;
  18
  19     while (dots--) {
  20         delta /= 2.0;
  21         f += delta;
  22     }
  23     return f;
  24 }
  25 int
  26 intlog2(int d) {
  27     int i=0;
  28     while (!(d&1)) {
  29         d/= 2;
  30         i++;
  31     }
  32     assert(!(d/2));
  33     return i;
  34 }
  35
  36 double
  37 log_2(double x) {
  38     return log(x)  /log(2.0);
  39 }
  40
  41 Interval
  42 itemlist_width(const Array<Item*> &its)
  43 {
  44     Interval iv ;
  45     iv.set_empty();
  46
  47     for (int j =0; j < its.size(); j++){
  48         iv.unite (its[j]->width());
  49
  50     }
  51     return iv;
  52 }
  53