atomic_add

atomic_add functions.

`int atomic_add (`	volatile __global int `*p` ,
	int `val)`

`unsigned int atomic_add (`	volatile __global unsigned int `*p` ,
	unsigned int `val)`

`int atomic_add (`	volatile __local int `*p` ,
	int `val)`

`unsigned int atomic_add (`	volatile __local unsigned int `*p` ,
	unsigned int `val)`

Description

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_add, is enabled by cl_khr_int64_base_atomics.

Specification

OpenCL Specification

Also see

Atomic Functions, atom_add

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