1cat <<EOF
2static inline ${ret}
3${atomic}_dec_if_positive(${atomic}_t *v)
4{
5	${int} dec, c = ${atomic}_read(v);
6
7	do {
8		dec = c - 1;
9		if (unlikely(dec < 0))
10			break;
11	} while (!${atomic}_try_cmpxchg(v, &c, dec));
12
13	return dec;
14}
15EOF
16