File: dec_if_positive

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file content (11 lines) | stat: -rwxr-xr-x 176 bytes parent folder | download | duplicates (19) 
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cat <<EOF
	${int} dec, c = raw_${atomic}_read(v);

	do {
		dec = c - 1;
		if (unlikely(dec < 0))
			break;
	} while (!raw_${atomic}_try_cmpxchg(v, &c, dec));

	return dec;
EOF