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NAME
     ck_rhs_fas -- fetch and store key in hash set

LIBRARY
     Concurrency Kit (libck, -lck)

SYNOPSIS
     #include <ck_rhs.h>

     bool
     ck_rhs_fas(ck_rhs_t *hs, unsigned long hash, const void *key,
	 void **previous);

DESCRIPTION
     The  ck_rhs_fas(3)  function  will fetch and store the key specified by the
     key argument in the hash set pointed to by the hs argument. The key  speci-
     fied  by key is expected to have the hash value specified by the hash argu-
     ment (which was previously generated using the CK_RHS_HASH(3) macro).

     If the call to ck_rhs_fas(3) was successful then the key specified  by  key
     was successfully stored in the hash set pointed to by hs.	The key must al-
     ready  exist in the hash set, and is replaced by key and the previous value
     is stored into the void pointer pointed to by the previous argument. If the
     key does not exist in the hash set then the function will return false  and
     the  hash	set  is unchanged. This function is guaranteed to be stable with
     respect to memory usage.

RETURN VALUES
     Upon successful completion, ck_rhs_fas(3) returns true  and  otherwise  re-
     turns false on failure.

ERRORS
     Behavior is undefined if key or hs are uninitialized.

SEE ALSO
     ck_rhs_init(3),	ck_rhs_move(3),    ck_rhs_destroy(3),	 CK_RHS_HASH(3),
     ck_rhs_iterator_init(3),  ck_rhs_next(3),	 ck_rhs_get(3),   ck_rhs_put(3),
     ck_rhs_put_unique(3),  ck_rhs_remove(3), ck_rhs_grow(3), ck_rhs_rebuild(3),
     ck_rhs_gc(3),   ck_rhs_count(3),	ck_rhs_reset(3),   ck_rhs_reset_size(3),
     ck_rhs_stat(3)

     Additional information available at http://concurrencykit.org/

				  June 20, 2013 		   CK_RHS_FAS(3)

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