//C++
double function(double x)
{
if(10*x-int(10*x)>=0.5)
{
return (int(10*x)+1)/(double)10;
}
else
{
return int(10*x)/(double)10;
}
}
//C++
double function(double x)
{
if(10*x-int(10*x)>=0.5)
{
return (int(10*x)+1)/(double)10;
}
else
{
return int(10*x)/(double)10;
}
}