1cat <<EOF 2/** 3 * ${class}${atomicname}() - atomic compare and exchange with ${desc_order} ordering 4 * @v: pointer to ${atomic}_t 5 * @old: ${int} value to compare with 6 * @new: ${int} value to assign 7 * 8 * If (@v == @old), atomically updates @v to @new with ${desc_order} ordering. 9 * 10 * ${desc_noinstr} 11 * 12 * Return: The original value of @v. 13 */ 14EOF 15