magnumripper/RandomNotes.md

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#pragma inside a macro

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RandomNotes.md

You can't use #pragma within a macro. But in C99, and therefore OpenCL, you can use the _Pragma() directive:

# if foo
#define PRAGMA_UNROLL "_Pragma(unroll 8)"
#elif bar
#define PRAGMA_UNROLL "_Pragma(unroll 16)"
#endif

#define macro foobar(...) \
(...) \
	PRAGMA_UNROLL \
	for (...) \
(...)