atomic_dec3clc

int atomic_dec(volatile global(3clc) int *p);

unsigned int atomic_dec(volatile global(3clc) unsigned int *p);

int atomic_dec(volatile local(3clc) int *p);

unsigned int atomic_dec(volatile local(3clc) unsigned int *p);

Overview

Read the 32-bit value (referred to as old) stored at location pointed by p. Compute (old - 1) and store result at location pointed by p. The function returns old.

A 64-bit version of this function, atom_dec(3clc), is enabled by cl_khr_int64_base_atomics(3clc).

Specification

OpenCL Specification[1]

Notes

1.

OpenCL Specification

page 279, section 6.12.11 - Atomic Functions for 32-bit integers