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ck_pr_btc(3)             BSD Library Functions Manual             ck_pr_btc(3)

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 offset
     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