Hi Folks, the tests with the 64-bit version binaries are in progress. The following code demonstrates a bug related to the round() function: program bugtest; var i,j,k:integer; r:real; begin for i:= 1 to 100 do begin r:=random; j:=trunc(r*100); k:=round(r*100); writeln(j:4,k:4,r*100:4:0,r:8:4); end; end. In 32-bit the code generates the correct output but in 64-bit the value of "k" is always zero. The other columns of the result is correct. Any idea why, any suggestion for further tests? Cheers, miklos