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.Dd April 7, 2013
.Dt ck_pr_neg 3
.Sh NAME
.Nm ck_pr_neg_ptr ,
.Nm ck_pr_neg_ptr_zero ,
.Nm ck_pr_neg_double ,
.Nm ck_pr_neg_double_zero ,
.Nm ck_pr_neg_char ,
.Nm ck_pr_neg_char_zero ,
.Nm ck_pr_neg_uint ,
.Nm ck_pr_neg_uint_zero ,
.Nm ck_pr_neg_int ,
.Nm ck_pr_neg_int_zero ,
.Nm ck_pr_neg_64 ,
.Nm ck_pr_neg_64_zero ,
.Nm ck_pr_neg_32 ,
.Nm ck_pr_neg_32_zero ,
.Nm ck_pr_neg_16 ,
.Nm ck_pr_neg_16_zero ,
.Nm ck_pr_neg_8 ,
.Nm ck_pr_neg_8_zero
.Nd atomic negation operations
.Sh LIBRARY
Concurrency Kit (libck, \-lck)
.Sh SYNOPSIS
.In ck_pr.h
.Ft void
.Fn ck_pr_neg_ptr "void *target"
.Ft void
.Fn ck_pr_neg_ptr_zero "void *target" "bool *z"
.Ft void
.Fn ck_pr_neg_double "double *target"
.Ft void
.Fn ck_pr_neg_double_zero "double *target" "bool *z"
.Ft void
.Fn ck_pr_neg_char "char *target"
.Ft void
.Fn ck_pr_neg_char_zero "char *target" "bool *z"
.Ft void
.Fn ck_pr_neg_uint "unsigned int *target"
.Ft void
.Fn ck_pr_neg_uint_zero "unsigned int *target" "bool *z"
.Ft void
.Fn ck_pr_neg_int "int *target"
.Ft void
.Fn ck_pr_neg_int_zero "int *target" "bool *z"
.Ft void
.Fn ck_pr_neg_64 "uint64_t *target"
.Ft void
.Fn ck_pr_neg_64_zero "uint64_t *target" "bool *z"
.Ft void
.Fn ck_pr_neg_32 "uint32_t *target"
.Ft void
.Fn ck_pr_neg_32_zero "uint32_t *target" "bool *z"
.Ft void
.Fn ck_pr_neg_16 "uint16_t *target"
.Ft void
.Fn ck_pr_neg_16_zero "uint16_t *target" "bool *z"
.Ft void
.Fn ck_pr_neg_8 "uint8_t *target"
.Ft void
.Fn ck_pr_neg_8_zero "uint8_t *target" "bool *z"
.Sh DESCRIPTION
The
.Fn ck_pr_neg 3
family of functions atomically negate the value pointed to
by
.Fa target .
.Sh RETURN VALUES
The ck_pr_neg_zero functions set the value pointed to by
.Fa z
if the result of the negation operation was 0. They set the
pointed to value to false otherwise.
.Sh SEE ALSO
.Xr ck_pr_fence_load 3 ,
.Xr ck_pr_fence_load_depends 3 ,
.Xr ck_pr_fence_store 3 ,
.Xr ck_pr_fence_memory 3 ,
.Xr ck_pr_load 3 ,
.Xr ck_pr_store 3 ,
.Xr ck_pr_fas 3 ,
.Xr ck_pr_faa 3 ,
.Xr ck_pr_inc 3 ,
.Xr ck_pr_dec 3 ,
.Xr ck_pr_not 3 ,
.Xr ck_pr_add 3 ,
.Xr ck_pr_sub 3 ,
.Xr ck_pr_and 3 ,
.Xr ck_pr_or 3 ,
.Xr ck_pr_xor 3 ,
.Xr ck_pr_cas 3 ,
.Xr ck_pr_btc 3 ,
.Xr ck_pr_bts 3 ,
.Xr ck_pr_btr 3
.Pp
Additional information available at http://concurrencykit.org/