if ft.IsInteger() {
			// tt is float32 or float64, and ft is also unsigned
			if tt.Size() == 4 {
				return s.uint64Tofloat32(n, v, ft, tt)
			}
			if tt.Size() == 8 {
				return s.uint64Tofloat64(n, v, ft, tt)
			}
			s.Fatalf("weird unsigned integer to float conversion %v -> %v", ft, tt)
		}
		// ft is float32 or float64, and tt is unsigned integer
		if ft.Size() == 4 {