Arduino potentiometer and led problem

led_potentiometer.ino

int potval;
int led = 10;

void setup() {
  pinMode(led, OUTPUT);
  Serial.begin(9600);
}

void turnled(int potval){
  float pv = potval/((1023/10)/10);
  float lv = ((255/10)/10)*pv;
  Serial.println(potval); // arduino says 1023 - Ok!
  Serial.println(pv); //arduino says 102.00 - Normally it's 100 not 102.00
  Serial.println(lv); //arduino says 104.00 - Normally it's 255 not 104.00
  analogWrite(led, lv);
}


void loop() {
  potval = analogRead(A0);
  turnled(potval);
}