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.\"
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.\" Copyright 2012-2013 Samy Al Bahra.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\"
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.Dd September 17, 2012
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.Dt CK_HS_REMOVE 3
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.Sh NAME
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.Nm ck_hs_remove
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.Nd remove key from a hash set
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.Sh LIBRARY
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Concurrency Kit (libck, \-lck)
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.Sh SYNOPSIS
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.In ck_hs.h
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.Ft void *
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.Fn ck_hs_remove "ck_hs_t *hs" "unsigned long hash" "const void *key"
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.Sh DESCRIPTION
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The
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.Fn ck_hs_remove 3
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function will attempt to remove the key specified by the
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.Fa key
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argument in the hash set pointed to by the
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.Fa hs
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argument. The key specified by
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.Fa key
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is expected to have the hash value specified by the
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.Fa hash
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argument (which was previously generated using the
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.Xr CK_HS_HASH 3
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macro).
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.Pp
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If the call to
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.Fn ck_hs_remove 3
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was successful then the key contained in the hash
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set is returned. If the key was not a member of the hash
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set then
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.Dv NULL
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is returned.
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.Sh RETURN VALUES
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Upon successful completion,
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.Fn ck_hs_remove 3
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returns a pointer to a key and otherwise returns
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.Dv NULL
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on failure.
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.Sh ERRORS
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Behavior is undefined if
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.Fa key
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or
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.Fa hs
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are uninitialized.
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.Sh SEE ALSO
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.Xr ck_hs_init 3 ,
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.Xr ck_hs_move 3 ,
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.Xr ck_hs_destroy 3 ,
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.Xr CK_HS_HASH 3 ,
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.Xr ck_hs_iterator_init 3 ,
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.Xr ck_hs_next 3 ,
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.Xr ck_hs_get 3 ,
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.Xr ck_hs_put 3 ,
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.Xr ck_hs_put_unique 3 ,
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.Xr ck_hs_set 3 ,
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.Xr ck_hs_fas 3 ,
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.Xr ck_hs_grow 3 ,
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.Xr ck_hs_rebuild 3 ,
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.Xr ck_hs_count 3 ,
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.Xr ck_hs_reset 3 ,
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.Xr ck_hs_reset_size 3 ,
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.Xr ck_hs_stat 3
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.Pp
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Additional information available at http://concurrencykit.org/
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