import standard.C.math

class Main {
     function Main() {
          var n = -4; 
          var ln = -2147483600 ; 
          var fn = -32.34; 
          echo "The absolute value of " + n + " is " + abs(n)+"\n";
          echo "The absolute value of " + ln + " is " + labs(ln)+"\n";
          echo "The absolute value of " + fn + " is " + fabs(fn)+"\n";
     }
} 
 

Results 
The absolute value of -4 is 4
The absolute value of -2147483600 is 2147483600
The absolute value of -32.340000000000003 is 32.340000000000003