static assert(
    isNumeric!byte &&
    isNumeric!short &&
    isNumeric!int &&
    isNumeric!long &&
    isNumeric!float &&
    isNumeric!double &&
    isNumeric!real &&
    isNumeric!(const(real)) &&
    isNumeric!(immutable(real))
);

static assert(
    !isNumeric!void &&
    !isNumeric!bool &&
    !isNumeric!char &&
    !isNumeric!wchar &&
    !isNumeric!dchar
);

// types which act as numeric values do not pass
struct S
{
    int val;
    alias val this;
}

static assert(!isNumeric!S);