15 double log2(double x) {
16 return log(x) /log(2.0);
22 const Real PHI = (1+sqrt(5))/2;
23 const double ENGRAVERS_SPACE = PHI;
24 const double WHOLE_SPACE = 10.0;
28 duration_to_idealspace(Mtime d)
31 return WHOLE_SPACE * pow(ENGRAVERS_SPACE, log2(d));