Re: [RFC] Framebuffer rotation patch

["Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>]

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Michal Suchanek wrote:
>> With typeof macro this can be made type-neutral avoiding potential mistakes.
>> +static inline long
>> +grub_min (long x, long y)
>> +{
>> +  if (x > y)
>> +    return y;
>> +  else
>> +    return x;
>> +}
>> +
>>     
>
> I don't see how typeof would be used. As I understand the docs it can
> only set types relative to something what is already defined (and in
> some cases actually dereference/call it) and there is nothing defined
> at the point these functions are declared to copy the type from.
>   
#include <stdio.h>
#define swap(a,b) {typeof (a) mytemp ## __LINE__; mytemp ## __LINE__ =
b; b = a; a = mytemp ## __LINE__; }

int
main ()
{
  int x = 1, y = 2;
  swap (x,y);
  printf ("%d, %d\n", x, y);
}


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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