Notes
The typedef, extern, and static storage-class
specifiers are supported. The auto and register storage-class
specifiers are not supported.
The extern storage-class specifier can only be used for functions
(kernel and non-kernel functions) and global variables declared in program scope
or variables declared inside a function
(kernel and non-kernel functions)
The static storage-class specifier can only be used for non-kernel
functions and global variables declared in program scope
and variables inside a function
declared in the global or constant address space.
Example
| extern constant float4 noise_table[256]; static constant float4 color_table[256]; extern kernel void my_foo(image2d_t img); extern void my_bar(global float *a); kernel void my_func(image2d_t img, global float *a) { extern constant float4 a; static constant float4 b = (float4)(1.0f); // OK. static float c; // Error: No implicit address space global int hurl; // Error: Must be static ... my_foo(img); ... my_bar(a); ... while (1) { static global int inside; // OK. ... } ... } |
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