DESCRIPTION
The data type names described in the table below are reserved and cannot be used by applications as userdefined type names. The vector data type names defined in vectorDataTypes(3clc), but where n is any value other than 2, 3, 4, 8 and 16, are also reserved.
Type 
Description

booln 
A boolean vector.

halfn 
A 16bit float vector.

quad, quadn 
A 128bit floatingpoint number and vectors.


Complex and imaginary 16bit floatingpoint scalar and vector.


Complex and imaginary 32bit floatingpoint scalar and vector.


Complex and imaginary 64bit floatingpoint scalar and vector.


Complex and imaginary 128bit floatingpoint scalar and vector.

floatnxm 
An n x m matrix of single precision
floatingpoint values stored in columnmajor order.

doublenxm 
An n x m matrix of double precision
floatingpoint values stored in columnmajor order.


A floatingpoint scalar and vector type with at
long doublen least as much precision and range as a double
and no more precision and range than a quad.

long long, long longn 
A 128bit signed integer scalar and vector.

unsigned long long, ulong long, ulong longn 
A 128bit unsigned integer scalar and vector.

SPECIFICATION
m[blue]OpenCL Specificationm[][1]
AUTHORS
The Khronos Group
COPYRIGHT
Copyright © 20072011 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 200, section 6.1.4  Reserved Data Types