Vector Data Types

For the scalar integer and floating-point data types described in Table 4.1, OpenCL C adds support for vector data types. The vector data type is defined with the type name, that is, char, uchar, short, ushort, int, uint, float, long, or ulong followed by a literal value n that defines the number of elements in the vector. Supported values of n are 2, 3, 4, 8, and 16 for all vector data types. Optionally, vector data types are also defined for double and half. These are available only if the device supports the double-precision and half-precision extensions. The supported vector data types are described in Table 4.2.

Table 4.2. Built-In Vector Data Types

Type	Description
charn	A vector of n 8-bit signed integer values
ucharn	A vector of n 8-bit unsigned integer values
shortn	A vector of n 16-bit signed integer values
ushortn	A vector of n 16-bit unsigned integer values
intn	A vector of n 32-bit signed integer values
uintn	A vector of n 32-bit unsigned integer values
longn	A vector of n 64-bit signed integer values
ulongn	A vector of n 64-bit unsigned integer values
floatn	A vector of n 32-bit floating-point values
doublen	A vector of n 64-bit floating-point values
halfn	A vector of n 16-bit floating-point values