Infrared help

Hello I used the following code to receive ir code:

#include <IRremote.h>

int RECV_PIN = 8;
IRrecv irrecv(RECV_PIN);
decode_results results;

void setup()
{
  Serial.begin(9600);
  irrecv.enableIRIn(); // Start the receiver
}

void loop() {
  if (irrecv.decode(&results)) {
    Serial.println(results.value, HEX);
      irrecv.resume(); // Receive the next value
  }
}

when I press the remote power button the arduino prints out A90
how can I put this into an if statement/switch?

when I press the remote power button the arduino prints out A90
how can I put this into an if statement/switch?

"if (someValue == results.value)"

Of course, you could've written that.