starpu-max/tests/datawizard/interfaces/variable/variable_opencl_kernel.cl

/* StarPU --- Runtime system for heterogeneous multicore architectures.
 *
 * Copyright (C) 2011  INRIA
 *
 * StarPU is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or (at
 * your option) any later version.
 *
 * StarPU is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * See the GNU Lesser General Public License in COPYING.LGPL for more details.
 */
__kernel void variable_opencl(__global int *val,
			      __global int *err,
			      int factor)
{
        const int i = get_global_id(0);
        if (i > 0)
		return;

	if (*val != 42 * factor)
		*err = 1;
	else
		*val *= -1;
}