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/
