MIN and MAX definitions starting with iOS 7

MIN_MAX_NEW.m

#if __clang__

#define __NSX_PASTE__(A,B) A##B

#if !defined(MIN)
    #define __NSMIN_IMPL__(A,B,L) ({ __typeof__(A) __NSX_PASTE__(__a,L) = (A); __typeof__(B) __NSX_PASTE__(__b,L) = (B); (__NSX_PASTE__(__a,L) < __NSX_PASTE__(__b,L)) ? __NSX_PASTE__(__a,L) : __NSX_PASTE__(__b,L); })
    #define MIN(A,B) __NSMIN_IMPL__(A,B,__COUNTER__)
#endif

#if !defined(MAX)
    #define __NSMAX_IMPL__(A,B,L) ({ __typeof__(A) __NSX_PASTE__(__a,L) = (A); __typeof__(B) __NSX_PASTE__(__b,L) = (B); (__NSX_PASTE__(__a,L) < __NSX_PASTE__(__b,L)) ? __NSX_PASTE__(__b,L) : __NSX_PASTE__(__a,L); })
    #define MAX(A,B) __NSMAX_IMPL__(A,B,__COUNTER__)
#endif

#if !defined(ABS)
    #define __NSABS_IMPL__(A,L) ({ __typeof__(A) __NSX_PASTE__(__a,L) = (A); (__NSX_PASTE__(__a,L) < 0) ? - __NSX_PASTE__(__a,L) : __NSX_PASTE__(__a,L); })
    #define ABS(A) __NSABS_IMPL__(A,__COUNTER__)
#endif

#else

#if !defined(MIN)
    #define MIN(A,B)  ({ __typeof__(A) __a = (A); __typeof__(B) __b = (B); __a < __b ? __a : __b; })
#endif

#if !defined(MAX)
    #define MAX(A,B)	({ __typeof__(A) __a = (A); __typeof__(B) __b = (B); __a < __b ? __b : __a; })
#endif

#if !defined(ABS)
    #define ABS(A)	({ __typeof__(A) __a = (A); __a < 0 ? -__a : __a; })
#endif

#endif