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

     1  /* Test for builtin abs, labs, llabs, imaxabs.  */
     2  /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
     3  
     4  #include <limits.h>
     5  typedef __INTMAX_TYPE__ intmax_t;
     6  #define INTMAX_MAX __INTMAX_MAX__
     7  
     8  extern int abs (int);
     9  extern long labs (long);
    10  extern long long llabs (long long);
    11  extern intmax_t imaxabs (intmax_t);
    12  extern void abort (void);
    13  extern void link_error (void);
    14  
    15  void
    16  main_test (void)
    17  {
    18    /* For each type, test both runtime and compile time (constant folding)
    19       optimization.  */
    20    volatile int i0 = 0, i1 = 1, im1 = -1, imin = -INT_MAX, imax = INT_MAX;
    21    volatile long l0 = 0L, l1 = 1L, lm1 = -1L, lmin = -LONG_MAX, lmax = LONG_MAX;
    22    volatile long long ll0 = 0LL, ll1 = 1LL, llm1 = -1LL;
    23    volatile long long llmin = -__LONG_LONG_MAX__, llmax = __LONG_LONG_MAX__;
    24    volatile intmax_t imax0 = 0, imax1 = 1, imaxm1 = -1;
    25    volatile intmax_t imaxmin = -INTMAX_MAX, imaxmax = INTMAX_MAX;
    26    if (abs (i0) != 0)
    27      abort ();
    28    if (abs (0) != 0)
    29      link_error ();
    30    if (abs (i1) != 1)
    31      abort ();
    32    if (abs (1) != 1)
    33      link_error ();
    34    if (abs (im1) != 1)
    35      abort ();
    36    if (abs (-1) != 1)
    37      link_error ();
    38    if (abs (imin) != INT_MAX)
    39      abort ();
    40    if (abs (-INT_MAX) != INT_MAX)
    41      link_error ();
    42    if (abs (imax) != INT_MAX)
    43      abort ();
    44    if (abs (INT_MAX) != INT_MAX)
    45      link_error ();
    46    if (labs (l0) != 0L)
    47      abort ();
    48    if (labs (0L) != 0L)
    49      link_error ();
    50    if (labs (l1) != 1L)
    51      abort ();
    52    if (labs (1L) != 1L)
    53      link_error ();
    54    if (labs (lm1) != 1L)
    55      abort ();
    56    if (labs (-1L) != 1L)
    57      link_error ();
    58    if (labs (lmin) != LONG_MAX)
    59      abort ();
    60    if (labs (-LONG_MAX) != LONG_MAX)
    61      link_error ();
    62    if (labs (lmax) != LONG_MAX)
    63      abort ();
    64    if (labs (LONG_MAX) != LONG_MAX)
    65      link_error ();
    66    if (llabs (ll0) != 0LL)
    67      abort ();
    68    if (llabs (0LL) != 0LL)
    69      link_error ();
    70    if (llabs (ll1) != 1LL)
    71      abort ();
    72    if (llabs (1LL) != 1LL)
    73      link_error ();
    74    if (llabs (llm1) != 1LL)
    75      abort ();
    76    if (llabs (-1LL) != 1LL)
    77      link_error ();
    78    if (llabs (llmin) != __LONG_LONG_MAX__)
    79      abort ();
    80    if (llabs (-__LONG_LONG_MAX__) != __LONG_LONG_MAX__)
    81      link_error ();
    82    if (llabs (llmax) != __LONG_LONG_MAX__)
    83      abort ();
    84    if (llabs (__LONG_LONG_MAX__) != __LONG_LONG_MAX__)
    85      link_error ();
    86    if (imaxabs (imax0) != 0)
    87      abort ();
    88    if (imaxabs (0) != 0)
    89      link_error ();
    90    if (imaxabs (imax1) != 1)
    91      abort ();
    92    if (imaxabs (1) != 1)
    93      link_error ();
    94    if (imaxabs (imaxm1) != 1)
    95      abort ();
    96    if (imaxabs (-1) != 1)
    97      link_error ();
    98    if (imaxabs (imaxmin) != INTMAX_MAX)
    99      abort ();
   100    if (imaxabs (-INTMAX_MAX) != INTMAX_MAX)
   101      link_error ();
   102    if (imaxabs (imaxmax) != INTMAX_MAX)
   103      abort ();
   104    if (imaxabs (INTMAX_MAX) != INTMAX_MAX)
   105      link_error ();
   106  }