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I have no idea what ALIGMENT_ATTRIBUTE(B) is suppose to do in typedef because it is a empty definition. Does it form a function?
#define ALIGNMENT_ATTRIBUTE(B)
typedef ALIGNMENT_ATTRIBUTE(8) UInt64 T_AUInt64;
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Macro is defined as something that covers a large amount, or is large in size. An example of macro is the study of the key driving aspects of an economy; macro economics. An example of macro is a very close up photograph of an ant; a macro photograph. adjective.
A macro is an action or a set of actions that you can run as many times as you want. When you create a macro, you are recording your mouse clicks and keystrokes. After you create a macro, you can edit it to make minor changes to the way it works.
A macro definition is a named sequence of statements you can call with a macro instruction. When it is called, the assembler processes and normally generates assembler language statements from the definition into the source module. The statements generated can be: Copied directly from the definition.
It can be used in platforms where the alignment matters.
For example, it can be used in a platforms where uint64 must be located at an address which is divisible by 8.
In such scenario, you'd need to extend the definition of ALIGNMENT_ATTRIBUTE(B) using the platform's alignment-enforcement mechanism (which is typically compiler-specific), such as #pragma align(8) or alignas(8) or _declspec(align(8)).
In your specific example, it is defined as nothing, which implies that your platform does not have any alignment restrictions.
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answered Oct 26 '22 23:10
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