Dahlia fixed point comparison

[cgyurgyik]

When trying to do Dahlia fixed point comparison:

let zero: ufix<1, 1> = 0.0;
let one: ufix<1, 1> = 1.0;

if (one > zero) {  }

Results in:

Stage 'dahlia' had a non-zero exit code.
---------------- stderr ----------------
[Type error] [Line 4, Column 9] > expected float, integer, rational, or double, received: ufix<1,1> and ufix<1,1>.
if (one > zero) {  }
        ^

[cgyurgyik]

Thanks :)

[cgyurgyik]

I've also added a primitive for fixed_p_std_gt to std.lib in Futil #282