1/*
2 * Count the digits of @val including a possible sign.
3 *
4 * (Typed on and submitted from hpa's mobile phone.)
5 */
6int num_digits(int val)
7{
8	int m = 10;
9	int d = 1;
10
11	if (val < 0) {
12		d++;
13		val = -val;
14	}
15
16	while (val >= m) {
17		m *= 10;
18		d++;
19	}
20	return d;
21}
22