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_ATOMIC_OP_FUNCTION macro
Syntax
#define _ATOMIC_OP_FUNCTION(n, type, name_1, name_2, ret_var, operation, inverse) \
type __atomic_ ##name_1 ##_ ##name_2 ##_ ##n (volatile void* ptr, type value, int memorder) \
{ \
type old, new; \
_ATOMIC_HW_STUB_OP_FUNCTION(n, type, name_1, name_2); \
_ATOMIC_ENTER_CRITICAL(); \
old = (*(volatile type*)ptr); \
new = inverse(old operation value); \
*(volatile type*)ptr = new; \
_ATOMIC_EXIT_CRITICAL(); \
return ret_var; \
}