atomic_dec

atomic_dec functions.

int atomic_dec ( volatile __global int *p )
unsigned int atomic_dec ( volatile __global unsigned int *p )
int atomic_dec ( volatile __local int *p )
unsigned int atomic_dec ( volatile __local unsigned int *p )

Description

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, is enabled by cl_khr_int64_base_atomics.

Specification

OpenCL Specification

Also see

Atomic Functions, atom_dec

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