private.3clc

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       substantial portions of the Materials.

       OpenCL implements the following disjoint address spaces: __global, __local, __constant, and __private The
       address space qualifier may be used in variable declarations to specify the region of memory that is used
       to allocate the object. The C syntax for type qualifiers is extended in OpenCL to include an address
       space name as a valid type qualifier. If the type of an object is qualified by an address space name, the
       object is allocated in the specified address name; otherwise, the object is allocated in the generic
       address space.

       The address space names without the __prefix i.e.  global, local, constant and private may be substituted
       for the corresponding address space names with the __prefix.

       The generic address space name for arguments to a function in a program, or local variables of a function
       is __private. All function arguments shall be in the __private address space.

       functionQualifiers(3clc) function arguments declared to be a pointer of a type can point to one of the
       following address spaces only: __global, __local or __constant. A pointer to address space A can only be
       assigned to a pointer to the same address space A. Casting a pointer to address space A to a pointer to
       address space B is illegal.

       Function arguments of type otherDataTypes(3clc), otherDataTypes(3clc), otherDataTypes(3clc),
       otherDataTypes(3clc), otherDataTypes(3clc), and otherDataTypes(3clc) refer to image memory objects
       allocated in the __global address space.

       __private - Address Space Qualifier.

       __private private

        1. OpenCL Specification
           page 222, section 6.5 - Address Space Qualifiers

The Khronos Group                                  11/18/2024                                    __PRIVATE(3clc)

global(3clc), local(3clc), constant(3clc)

OpenCLSpecification[1]