mulAndAss method
Implementation
MathTime mulAndAss( dynamic r ){
_update();
if( r is MathTime ){
double rr = r.toFloat();
_hour *= rr;
_min *= rr;
_sec *= rr;
_frame *= rr;
} else {
double rr = ClipMath.toDouble(r);
_hour *= rr;
_min *= rr;
_sec *= rr;
_frame *= rr;
}
reduce();
return this;
}