Comparison issue

[James Miller]

Hey, I'm trying to do some vector based code, and my unittests started
to fail on testing normalize. I'm using the standard algorithm, but
the assert is always return false. I did some investigation, and can
show that this program causes failure:


    import std.math : sqrt;
    import std.stdio : writeln;

    T size(T)(T[] t){
        T val = 0;
        for(size_t i = 0; i < t.length; i++) {
            val += t[i]*t[i];
        }

        return sqrt(val);
    }

    void normalize(T)(ref T[] t) {
        auto s = size(t);
        foreach(ref v; t) {
            v /= s;
        }
    }

    void main() {
        float[] vector = [1,2,3,4];
        normalize(vector);
        auto v1 = size!float(vector);

        writeln(v1 == 1); //false
        writeln(v1 == 1.0); //false
        writeln(v1 == 1.0f); //false
        writeln(v1+1 == 2.0f); //true
    }

I used typeid and can show that the type of `v1` is `float`, as you'd
expect. And the last one passes fine, as does doing `(v1+1)-1 == 1`.
I'm not sure what could be causing this. I believe it may be a bug,
but I would like to see if I'm just wrong instead.

--
James Miller