std.math conflicts with std.mathspecial

[F i L]

Whoops, forgot "std" before "mathspecial":

    import std.math;
    import std.mathspecial;

    void main()
    {
        writeln(std.mathspecial.erf(0.5));
    }

or you could do:

    import std.math;
    import std.mathspecial : erf;

    void main()
    {
        writeln(erf(0.5));
    }