> roundingwarnings = on;
Rounding warning mode has been activated.
Warning: Rounding occurred when converting the constant "0.1" to floating-point with 165 bits.
If safe computation is needed, try to increase the precision.
Warning: rounding has happened. The value displayed is a faithful rounding of the true result.
> roundingwarnings = off;
Rounding warning mode has been deactivated.