To cast a uint to float to compute k/n, use to! or cast()?

[Steven Schveighoffer via Digitalmars-d-learn]

On 1/29/16 6:48 PM, Enjoys Math wrote:
> I want to compute the points of a regular polygon in a loop:
>
> float r = 1.0;
>
> for (uint k=0; k < numVerts; k++) {
>     vertlist ~= Vec2D(r * cos(k/n * 2 * PI), ...)
> }
>
> How do I make sure k/n is a float or double?

uint is promoted to float/double with a binary math operation. You could 
simply reverse the order of your expression:

2 * PI * k/n

But if you want to force a type change with simple conversions such as 
these, just use a constructor:

float(k) / n * 2 * PI

There is no need to cast or use `to` (though both of those would be 
equivalent to simple conversion).

-Steve