docs: def fix2real(uval, conv):
      """
      Convert a 32 bit unsigned int register into the value it represents in its Fixed arithmetic form.
      @param uval: the numeric unsigned value in simulink representation
      @param conv: conv structure with conversion specs as generated by I{get_conv}
      @return: the real number represented by the Fixed arithmetic defined in conv
      @todo: Better error detection and management of unsupported operations and arguments
      """
      res = 0
      int_val =  ((uval & conv["int_mask"]) >> conv["bin_point"])
      dec_val = conv["dec_step"] * (uval & conv["dec_mask"])
      if conv["signed"] and (uval & conv["sign_mask"] > 0):
          res = conv["int_min"] + int_val + dec_val
      else: 
          res = int_val + dec_val
      return (res / conv["scaling"])