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NAME
       ck_pr_btc_ptr,	  ck_pr_btc_uint,     ck_pr_btc_int,	 ck_pr_btc_64,
       ck_pr_btc_32, ck_pr_btc_16 -- atomic bit	test-and-complement operations

LIBRARY
       Concurrency Kit (libck, -lck)

SYNOPSIS
       #include	<ck_pr.h>

       bool
       ck_pr_btc_ptr(void *target, unsigned int	bit_index);

       bool
       ck_pr_btc_uint(uint *target, unsigned int bit_index);

       bool
       ck_pr_btc_int(int *target, unsigned int bit_index);

       bool
       ck_pr_btc_64(uint64_t *target, unsigned int bit_index);

       bool
       ck_pr_btc_32(uint32_t *target, unsigned int bit_index);

       bool
       ck_pr_btc_16(uint16_t *target, unsigned int bit_index);

DESCRIPTION
       The ck_pr_btc(3)	family of functions atomically fetch the value of  the
       bit in target at	index bit_index	and set	that bit to its	complement.

RETURN VALUES
       These  family of	functions return the original value of the bit at off-
       set bit_index that is in	the value pointed to by	target.

SEE ALSO
       ck_pr_fence_load(3), ck_pr_fence_load_depends(3), ck_pr_fence_store(3),
       ck_pr_fence_memory(3),  ck_pr_load(3),  ck_pr_store(3),	 ck_pr_fas(3),
       ck_pr_faa(3),  ck_pr_inc(3),  ck_pr_dec(3), ck_pr_neg(3), ck_pr_not(3),
       ck_pr_sub(3), ck_pr_and(3),  ck_pr_or(3),  ck_pr_xor(3),	 ck_pr_add(3),
       ck_pr_btc(3), ck_pr_btr(3), ck_pr_cas(3)

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

				April 11, 2013			  ck_pr_btc(3)

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<https://man.freebsd.org/cgi/man.cgi?query=ck_pr_btc&sektion=3&manpath=FreeBSD+Ports+14.3.quarterly>

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