stdio-common/tstdiomisc.c

   1 #include <float.h>
   2 #include <math.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <wchar.h>
   6
   7 static int
   8 t1 (void)
   9 {
  10   int n = -1;
  11   sscanf ("abc  ", "abc %n", &n);
  12   printf ("t1: count=%d\n", n);
  13
  14   return n != 5;
  15 }
  16
  17 static int
  18 t2 (void)
  19 {
  20   int result = 0;
  21   int n;
  22   long N;
  23   int retval;
  24 #define SCAN(INPUT, FORMAT, VAR, EXP_RES, EXP_VAL) \
  25   VAR = -1; \
  26   retval = sscanf (INPUT, FORMAT, &VAR); \
  27   printf ("sscanf (\"%s\", \"%s\", &x) => %d, x = %ld\n", \
  28           INPUT, FORMAT, retval, (long int) VAR); \
  29   result |= retval != EXP_RES || VAR != EXP_VAL
  30
  31   SCAN ("12345", "%ld", N, 1, 12345);
  32   SCAN ("12345", "%llllld", N, 0, -1);
  33   SCAN ("12345", "%LLLLLd", N, 0, -1);
  34   SCAN ("test ", "%*s%n",  n, 0, 4);
  35   SCAN ("test ", "%2*s%n",  n, 0, -1);
  36   SCAN ("12 ",   "%l2d",  n, 0, -1);
  37   SCAN ("12 ",   "%2ld",  N, 1, 12);
  38
  39   n = -1;
  40   N = -1;
  41   retval = sscanf ("1 1", "%d %Z", &n, &N);
  42   printf ("sscanf (\"1 1\", \"%%d %%Z\", &n, &N) => %d, n = %d, N = %ld\n", \
  43           retval, n, N); \
  44   result |= retval != 1 || n != 1 || N != -1;
  45
  46   return result;
  47 }
  48
  49 volatile double nanval;
  50
  51
  52 static int
  53 F (void)
  54 {
  55   char buf[20];
  56   wchar_t wbuf[10];
  57   int result;
  58
  59   nanval = NAN;
  60
  61   snprintf (buf, sizeof buf, "%f %F", nanval, nanval);
  62   result = strcmp (buf, "nan NAN") != 0;
  63   printf ("expected \"nan NAN\", got \"%s\"\n", buf);
  64
  65   snprintf (buf, sizeof buf, "%f %F", DBL_MAX * DBL_MAX, DBL_MAX * DBL_MAX);
  66   result |= strcmp (buf, "inf INF") != 0;
  67   printf ("expected \"inf INF\", got \"%s\"\n", buf);
  68
  69   swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), L"%f %F", nanval, nanval);
  70   result |= wcscmp (wbuf, L"nan NAN") != 0;
  71   printf ("expected L\"nan NAN\", got L\"%S\"\n", wbuf);
  72
  73   swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), L"%f %F",
  74             DBL_MAX * DBL_MAX, DBL_MAX * DBL_MAX);
  75   result |= wcscmp (wbuf, L"inf INF") != 0;
  76   printf ("expected L\"inf INF\", got L\"%S\"\n", wbuf);
  77
  78   return result;
  79 }
  80
  81 int
  82 main (int argc, char *argv[])
  83 {
  84   int result = 0;
  85
  86   result |= t1 ();
  87   result |= t2 ();
  88   result |= F ();
  89
  90   result |= fflush (stdout) == EOF;
  91
  92   return result;
  93 }