mod

[ktye]

3/-3+!7
0 -2 -1 0 1 2 0

should be
0 1 2 0 1 2 0

[ktye]

modulo is euclidean now, but idiv is still truncated

[ktye]

encode of negative numbers has to be fixed as well.

 8/8\-234
350

and division by zero (e.g. may trap on wasm)

[ktye]

https://stackoverflow.com/a/29319743

+----+----+-----------+---------+-----------+-----------+---------+-----------+
| x mod y |           quotient 'q'          |          remainder 'r'          |
| x  | y  | truncated | floored | Euclidean | truncated | floored | Euclidean |
+----+----+-----------+---------+-----------+-----------+---------+-----------+
|  5 |  3 |         1 |       1 |         1 |         2 |       2 |         2 |
| -5 |  3 |        -1 |      -2 |        -2 |        -2 |       1 |         1 |
|  5 | -3 |        -1 |      -2 |        -1 |         2 |      -1 |         2 |
| -5 | -3 |         1 |       1 |         2 |        -2 |      -2 |         1 |
+----+----+-----------+---------+-----------+-----------+---------+-----------+
                                         ^^                                ^^

currently:

 5 -5 5 -5%3 3 -3 -3
1 -1 -1 1
 3 3 -3 -3!'5 -5 5 -5
2 1 2 -5

[ktye]

this does all 4 cases (but not division by 0)

func div(x, y int) int {
	r := x % y
	if r < 0 {
		r += abs(y)
	}
	return (x - r) / y
}
func mod(x, y int) int { return x - div(x, y)*y }

[ktye]

{r:!0;while[~y?0 -1;r,:x!y;y:y%x;|r]}    /atomic x y