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       clCreateKernel - Creates a kernel object.

       cl_kernel clCreateKernel(cl_program program, const char *kernel_name,
                                cl_int *errcode_ret);


           A program object with a successfully built executable.

           A function name in the program declared with the __kernel qualifier

           Returns an appropriate error code. If errcode_ret is NULL, no error code is returned.


       A kernel is a function declared in a program. A kernel is identified by the
       functionQualifiers(3clc) qualifier applied to any function in a program. A kernel object
       encapsulates the specific __kernel function declared in a program and the argument values
       to be used when executing this __kernel function.


       clCreateKernel returns a valid non-zero kernel object and errcode_ret is set to CL_SUCCESS
       if the kernel object is created successfully. Otherwise, it returns a NULL value with one
       of the following error values returned in errcode_ret:

       ·   CL_INVALID_PROGRAM if program is not a valid program object.

       ·   CL_INVALID_PROGRAM_EXECUTABLE if there is no successfully built executable for

       ·   CL_INVALID_KERNEL_NAME if kernel_name is not found in program.

       ·   CL_INVALID_KERNEL_DEFINITION if the function definition for __kernel function given by
           kernel_name such as the number of arguments, the argument types are not the same for
           all devices for which the program executable has been built.

       ·   CL_INVALID_VALUE if kernel_name is NULL.

       ·   CL_OUT_OF_RESOURCES if there is a failure to allocate resources required by the OpenCL
           implementation on the device.

       ·   CL_OUT_OF_HOST_MEMORY if there is a failure to allocate resources required by the
           OpenCL implementation on the host.


       OpenCL Specification[1]


       clCreateKernelsInProgram(3clc), clRetainKernel(3clc), clReleaseKernel(3clc),
       clSetKernelArg(3clc), clGetKernelInfo(3clc), clGetKernelWorkGroupInfo(3clc),


       The Khronos Group


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       portions of the Materials.


        1. OpenCL Specification
           page 157, section 5.7.1 - Creating Kernel Objects