in HDL, How to round to the closestnumber in the direction of zero

[rogeret]

When you represent numbers with finite precision, not every number in the available range can be represented exactly. If a number cannot be represented exactly by the specified data type and scaling, a rounding method is used to cast the value to a representable number.
But , in HDL, How to round to the closestnumber in the direction of zero?
Any efficient method?
Thanks!

 

[harsha_jk]

Can a code be written to do that?

 

[rogeret]

yes
if(MSB)
begin
truncate;
end
else
begin
scale 0.11111111 and adds
truncate
end

but it is not so efficient