1  extern int inside_main;
       2  extern void abort (void);
       3  #ifdef __OPTIMIZE__
       4  #define ABORT_INSIDE_MAIN do { if (inside_main) abort (); } while (0)
       5  #else
       6  #define ABORT_INSIDE_MAIN do { } while (0)
       7  #endif
       8  
       9  typedef __INTMAX_TYPE__ intmax_t;
      10  
      11  __attribute__ ((__noinline__))
      12  int
      13  abs (int x)
      14  {
      15    ABORT_INSIDE_MAIN;
      16    return x < 0 ? -x : x;
      17  }
      18  
      19  __attribute__ ((__noinline__))
      20  long
      21  labs (long x)
      22  {
      23    ABORT_INSIDE_MAIN;
      24    return x < 0 ? -x : x;
      25  }
      26  
      27  __attribute__ ((__noinline__))
      28  long long
      29  llabs (long long x)
      30  {
      31    ABORT_INSIDE_MAIN;
      32    return x < 0 ? -x : x;
      33  }
      34  
      35  __attribute__ ((__noinline__))
      36  intmax_t
      37  imaxabs (intmax_t x)
      38  {
      39    ABORT_INSIDE_MAIN;
      40    return x < 0 ? -x : x;
      41  }