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NAME
       ck_pr_fas_ptr,	 ck_pr_fas_double,   ck_pr_fas_char,   ck_pr_fas_uint,
       ck_pr_fas_int, ck_pr_fas_64, ck_pr_fas_32, ck_pr_fas_16,	ck_pr_fas_8 --
       atomic swap operations

LIBRARY
       Concurrency Kit (libck, -lck)

SYNOPSIS
       #include	<ck_pr.h>

       void *
       ck_pr_fas_ptr(void *target, void	*new_value);

       double
       ck_pr_fas_double(double *target,	double new_value);

       char
       ck_pr_fas_char(char *target, char new_value);

       unsigned	int
       ck_pr_fas_uint(unsigned int *target, unsigned int new_value);

       int
       ck_pr_fas_int(int *target, int new_value);

       uint64_t
       ck_pr_fas_64(uint64_t *target, uint64_t new_value);

       uint32_t
       ck_pr_fas_32(uint32_t *target, uint32_t new_value);

       uint16_t
       ck_pr_fas_16(uint16_t *target, uint16_t new_value);

       uint8_t
       ck_pr_fas_8(uint8_t *target, uint8_t new_value);

DESCRIPTION
       The ck_pr_fas(3)	family of functions atomically fetch the value pointed
       to by target and	replace	the value pointed to by	target with the	 value
       specified by new_value.

RETURN VALUES
       This function returns the value pointed to by target at the time	of op-
       eration invocation before it was	atomically replaced with new_value.

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_faa(3),
       ck_pr_inc(3), ck_pr_dec(3), ck_pr_neg(3),  ck_pr_not(3),	 ck_pr_add(3),
       ck_pr_sub(3),  ck_pr_and(3),  ck_pr_or(3),  ck_pr_xor(3), ck_pr_cas(3),
       ck_pr_btc(3), ck_pr_bts(3), ck_pr_btr(3)

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

				 April 7, 2013			  ck_pr_fas(3)

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

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