case 20:return V[vn]*0.5+700;break;
case 21:return V[vn]+1280; break;
case 22:return V[vn]*10;break;
+ case 23:return V[vn]*0.025+700.0;break;
+ case 24:return V[vn]*1.1/1024.0;break;
+ case 25:return V[vn]*3.0/1024.0;break;
+ case 26:return V[vn]*5.0/1024.0;break;
+ case 27:return ((double)V[2]+(double)V[1]/1000.0)/8.0;break;
+ case 28:return exp(V[vn]/2560.0);break;
default:return V[vn];
}
}