The package CL.Vectors

This package defines the vector types available in the OpenCL C programming language. They are used primarily for data transfer, but element-wise basic operations +, -, * and / are also available. The types suffixed with _Vector are arrays of indefinite length; you can also use them as data containers for transfer operations.

The actual OpenCL vector types (like Char2, Int4 etc) are records; you can access their components by using .S (Index). This is necessary because the types need to be tranferred by value to OpenCL, but the convention C_Pass_By_Copy is only available for record types, not for arrays. This is also similar to OpenCL C, where you can also access the elements with .s (i).

I tried to make it possible to access the elements with .X, .X and so on (like it works in OpenCL C), which would theoretically possible by using pragma Unchecked_Union, but a GNAT bug currently prevents this from working.

You can initialize the fixed vector types with the overloaded function CL_Vector, for instance:

My_Int2 : CL.Vectors.Int2 := CL.Vectors.CL_Vector (23, 42);

Array types for the fixed vector types are also available:

My_Int2_Array : CL.Vectors.Int2_Array
  := CL.Vectors.New_Array ( (1, 2), (3, 4), (5, 6) );