atomic_or3clc

int atomic_or(volatile global(3clc) int *p, int val);

unsigned int atomic_or(volatile global(3clc) unsigned int *p, unsigned int val);

int atomic_or(volatile local(3clc) int *p, int val);

unsigned int atomic_or(volatile local(3clc) unsigned int *p, unsigned int val);

Overview

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

A 64-bit version of this function, atom_or(3clc), is enabled by cl_khr_int64_extended_atomics(3clc).

Specification

OpenCL Specification[1]

Notes

1.

OpenCL Specification

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