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ck_pr_dec(3)          DragonFly Library Functions Manual          ck_pr_dec(3)


NAME

     ck_pr_dec_ptr, ck_pr_dec_ptr_zero, ck_pr_dec_double,
     ck_pr_dec_double_zero, ck_pr_dec_char, ck_pr_dec_char_zero,
     ck_pr_dec_uint, ck_pr_dec_uint_zero, ck_pr_dec_int, ck_pr_dec_int_zero,
     ck_pr_dec_64, ck_pr_dec_64_zero, ck_pr_dec_32, ck_pr_dec_32_zero,
     ck_pr_dec_16, ck_pr_dec_16_zero, ck_pr_dec_8, ck_pr_dec_8_zero - atomic
     decrement operations


LIBRARY

     Concurrency Kit (libck, -lck)


SYNOPSIS

     #include <ck_pr.h>

     void
     ck_pr_dec_ptr(void *target);

     void
     ck_pr_dec_ptr_zero(void *target, bool *z);

     void
     ck_pr_dec_double(double *target);

     void
     ck_pr_dec_double_zero(double *target, bool *z);

     void
     ck_pr_dec_char(char *target);

     void
     ck_pr_dec_char_zero(char *target, bool *z);

     void
     ck_pr_dec_uint(unsigned int *target);

     void
     ck_pr_dec_uint_zero(unsigned int *target, bool *z);

     void
     ck_pr_dec_int(int *target);

     void
     ck_pr_dec_int_zero(int *target, bool *z);

     void
     ck_pr_dec_64(uint64_t *target);

     void
     ck_pr_dec_64_zero(uint64_t *target, bool *z);

     void
     ck_pr_dec_32(uint32_t *target);

     void
     ck_pr_dec_32_zero(uint32_t *target, bool *z);

     void
     ck_pr_dec_16(uint16_t *target);

     void
     ck_pr_dec_16_zero(uint16_t *target, bool *z);

     void
     ck_pr_dec_8(uint8_t *target);

     void
     ck_pr_dec_8_zero(uint8_t *target, bool *z);


DESCRIPTION

     The ck_pr_dec(3) family of functions atomically decrement the value
     pointed to by target.


RETURN VALUES

     The ck_pr_dec_zero family of functions set the value pointed to by z to
     true if the result of the decrement operation was 0. They set the value
     pointed to by z to false otherwise.


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_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

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