modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20040409-3w.c (about)

     1  /* { dg-additional-options "-fwrapv" } */
     2  
     3  #include <limits.h>
     4  
     5  extern void abort ();
     6  
     7  int test2(int x)
     8  {
     9    return ~(x + INT_MIN);
    10  }
    11  
    12  int test3(int x)
    13  {
    14    return ~(x - INT_MIN);
    15  }
    16  
    17  int test5(int x)
    18  {
    19    int y = INT_MIN;
    20    return ~(x + y);
    21  }
    22  
    23  int test6(int x)
    24  {
    25    int y = INT_MIN;
    26    return ~(x - y);
    27  }
    28  
    29  
    30  void test(int a, int b)
    31  {
    32    if (test2(a) != b)
    33      abort();
    34    if (test3(a) != b)
    35      abort();
    36    if (test5(a) != b)
    37      abort();
    38    if (test6(a) != b)
    39      abort();
    40  }
    41  
    42  
    43  int main()
    44  {
    45  #if INT_MAX == 2147483647
    46    test(0x00000000,0x7fffffff);
    47    test(0x80000000,0xffffffff);
    48    test(0x12345678,0x6dcba987);
    49    test(0x92345678,0xedcba987);
    50    test(0x7fffffff,0x00000000);
    51    test(0xffffffff,0x80000000);
    52  #endif
    53  
    54  #if INT_MAX == 32767
    55    test(0x0000,0x7fff);
    56    test(0x8000,0xffff);
    57    test(0x1234,0x6dcb);
    58    test(0x9234,0xedcb);
    59    test(0x7fff,0x0000);
    60    test(0xffff,0x8000);
    61  #endif
    62  
    63    return 0;
    64  }
    65