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
));