Reserved Data Types

Built-in reserved Data Types.

Description

The data type names described in the table below are reserved and cannot be used by applications as user-defined type names. The vector data type names defined in Vector Data Types, 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 16-bit float vector.
quad, quadn A 128-bit floating-point number and vectors.

complex half,
complex halfn,
imaginary half,
imaginary halfn

A complex 16-bit floating-point number, and complex and imaginary 16-bit floating-point vectors.

complex float,
complex floatn,
imaginary float,
imaginary floatn

A complex single precision floating-point number, and complex and imaginary single precision floating-point vectors.

complex double,
complex doublen,
imaginary double,
imaginary doublen

A complex double precision floating-point number, and complex and imaginary double precision floating-point vectors.

complex quad,
complex quadn,
imaginary quad,
imaginary quadn

A complex 128-bit floating-point number, and complex and imaginary 128-bit floating-point vectors.
floatnxm An n x m matrix of single precision floating-point values stored in column-major order.
doublenxm An n x m matrix of double precision floating-point values stored in column-major order.

long double,
long doublen

A floating-point 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 128-bit signed integer scalar and vector.
unsigned long long, ulong long, ulong longn A 128-bit unsigned integer scalar and vector.

The C99 derived types (arrays, structs, union, function, and pointers), constructed from the built-in data types described in Scalar Data Types, Vector Data Types, and Other Data Types are also supported.

The type qualifiers const, restrict, and volatile as defined by the C99 specification are supported. These qualifiers cannot be used with image2d_t and image3d_t type. Types other than pointer types shall not use the restrict qualifier.

Specification

OpenCL Specification

Also see

Macros and Limits, Scalar Data Types, Vector Data Types, Other Data Types, Abstract Data Types

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