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