modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20120427-1.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    return -(a->sig < b->sig);
    16  }
    17  
    18  sreal a[] = {
    19     { 0, 0 },
    20     { 1, 0 },
    21     { 0, 1 },
    22     { 1, 1 }
    23  };
    24  
    25  int main()
    26  {
    27    int i, j;
    28    for (i = 0; i <= 3; i++) {
    29      for (j = 0; j < 3; j++) {
    30        if (i < j && sreal_compare(&a[i], &a[j]) != -1) abort();
    31        if (i == j && sreal_compare(&a[i], &a[j]) != 0) abort();
    32        if (i > j && sreal_compare(&a[i], &a[j]) != 1) abort();
    33      }
    34    }
    35    return 0;
    36  }