mmm, running this printf ("%.50f", atan2(1,1) * 4.0); I get... Static value: 3.1415926535897931159979634685441851615905761718750 NT 4.0 Server Derived value: 3.14159265358979310000000000000000000000000000000000 Solaris V release 4 Derived value: 3.14159265358979311599796346854418516159057617187500 Just thought I'd share Walter ===== Want to unsubscribe from this list? ===== Send mail with body "unsubscribe" to macperl-request@macperl.org