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cat <<EOF
/**
* ${class}${atomicname}() - atomic compare and exchange with ${desc_order} ordering
* @v: pointer to ${atomic}_t
* @old: pointer to ${int} value to compare with
* @new: ${int} value to assign
*
* If (@v == @old), atomically updates @v to @new with ${desc_order} ordering.
* Otherwise, updates @old to the current value of @v.
*
* ${desc_noinstr}
*
* Return: @true if the exchange occured, @false otherwise.
*/
EOF
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