modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20120427-2.c (about)

     1  typedef struct sreal
     2  {
     3    unsigned sig;		/* Significant.  */
     4    int exp;		/* Exponent.  */
     5  } sreal;
     6  
     7  sreal_compare (sreal *a, sreal *b)
     8  {
     9    if (a->exp > b->exp)
    10      return 1;
    11    if (a->exp < b->exp)
    12      return -1;
    13    if (a->sig > b->sig)
    14      return 1;
    15    if (a->sig < b->sig)
    16      return -1;
    17    return 0;
    18  }
    19  
    20  sreal a[] = {
    21     { 0, 0 },
    22     { 1, 0 },
    23     { 0, 1 },
    24     { 1, 1 }
    25  };
    26  
    27  int main()
    28  {
    29    int i, j;
    30    for (i = 0; i <= 3; i++) {
    31      for (j = 0; j < 3; j++) {
    32        if (i < j && sreal_compare(&a[i], &a[j]) != -1) abort();
    33        if (i == j && sreal_compare(&a[i], &a[j]) != 0) abort();
    34        if (i > j && sreal_compare(&a[i], &a[j]) != 1) abort();
    35      }
    36    }
    37    return 0;
    38  }