How do I set the floating point precision in Perl?

Question

Is there a way to set a Perl script\'s floating point precision (to 3 digits), without having to change it specifically for every variable?

Something similar to TCL\

Answer 1

There is no way to globally change this.

If it is just for display purposes then use sprintf("%.3f", $value);.

For mathematical purposes, use (int(($value * 1000.0) + 0.5) / 1000.0). This would work for positive numbers. You would need to change it to work with negative numbers though.