D do not know which function to use apparently

[Narxa]

On Tuesday, 11 December 2018 at 14:22:30 UTC, Adam D. Ruppe wrote:
> On Tuesday, 11 December 2018 at 14:16:05 UTC, Narxa wrote:
>> int var = floor(sqrt(n)) // where 'n' is a 'const int'
>
> You can just cast it to float:
>
> floor(sqrt( cast(float) n ));
>
> and it will work.

It produced the following error:
--------------------------------
Error: cannot implicitly convert expression 
floor(sqrt(cast(float)n)) of type float to int


I am using 'dmd' compiler if it matters.