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ck_pr_neg(3) Library Functions Manual ck_pr_neg(3)

NAME

ck_pr_neg_ptr, ck_pr_neg_ptr_zero, ck_pr_neg_double, ck_pr_neg_double_zero, ck_pr_neg_char, ck_pr_neg_char_zero, ck_pr_neg_uint, ck_pr_neg_uint_zero, ck_pr_neg_int, ck_pr_neg_int_zero, ck_pr_neg_64, ck_pr_neg_64_zero, ck_pr_neg_32, ck_pr_neg_32_zero, ck_pr_neg_16, ck_pr_neg_16_zero, ck_pr_neg_8, ck_pr_neg_8_zero —
atomic negation operations

LIBRARY

Concurrency Kit (libck, -lck)

SYNOPSIS

#include <ck_pr.h>

void
ck_pr_neg_ptr(void *target);

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

void
ck_pr_neg_double(double *target);

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

void
ck_pr_neg_char(char *target);

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

void
ck_pr_neg_uint(unsigned int *target);

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

void
ck_pr_neg_int(int *target);

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

void
ck_pr_neg_64(uint64_t *target);

void
ck_pr_neg_64_zero(uint64_t *target, bool *z);

void
ck_pr_neg_32(uint32_t *target);

void
ck_pr_neg_32_zero(uint32_t *target, bool *z);

void
ck_pr_neg_16(uint16_t *target);

void
ck_pr_neg_16_zero(uint16_t *target, bool *z);

void
ck_pr_neg_8(uint8_t *target);

void
ck_pr_neg_8_zero(uint8_t *target, bool *z);

DESCRIPTION

The ck_pr_neg(3) family of functions atomically negate the value pointed to by target.

RETURN VALUES

The ck_pr_neg_zero functions set the value pointed to by z if the result of the negation operation was 0. They set the pointed to value 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_dec(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