c - What is the difference between '__asm' and '__asm__'? -

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i learning inline assembly in c. far can tell, difference between __asm { ... }; , __asm__("..."); first uses mov eax, var , second uses movl %0, %%eax :"=r" (var) @ end. also, there lot less websites first. other differences there?

which 1 use depends on compiler. isn't standard c language.


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