NAME

       atom_and - 64-bit atom_and functions.

       long atom_and(volatile global(3clc) long *p, long val);

       long atom_and(volatile global(3clc) long *p, long val);

       ulong atom_and(volatile local(3clc) ulong *p, ulong val);

       ulong atom_and(volatile local(3clc) ulong *p, ulong val);

DESCRIPTION

       Read the 64-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.

       An application that wants to use this extension will need to include the #pragma OPENCL EXTENSION
       cl_khr_int64_extended_atomics : enable in the OpenCL program source.

       This function is performed in one atomic transaction. These transactions are atomic for the device
       executing these atomic functions. There is no guarantee of atomicity if the atomic operations to the same
       memory location are being performed by kernels executing on multiple devices.

       Atomic operations on 64-bit integers and 32-bit integers (and float) are also atomic with regard to each
       other.

SPECIFICATION

       OpenCL Specification[1]

SEE ALSO

       atomicFunctions(3clc), atomic_and(3clc), cl_khr_int64_extended_atomics(3clc)

AUTHORS

       The Khronos Group

COPYRIGHT

       Copyright © 2007-2011 The Khronos Group Inc.
       Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or
       associated documentation files (the "Materials"), to deal in the Materials without restriction, including
       without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
       copies of the Materials, and to permit persons to whom the Materials are furnished to do so, subject to
       the condition that this copyright notice and permission notice shall be included in all copies or
       substantial portions of the Materials.

NOTES

        1. OpenCL Specification
           page 279, section 6.12.11 - Atomic Functions for 32-bit integers