stdlib/tst-strtol.c

   1 /* My bet is this was written by Chris Torek.
   2    I reformatted and ansidecl-ized it, and tweaked it a little.  */
   3
   4 #include <ansidecl.h>
   5 #include <ctype.h>
   6 #include <stdio.h>
   7 #include <errno.h>
   8 #include <stdlib.h>
   9 #include <strings.h>
  10
  11 struct ltest
  12   {
  13     CONST char *str;            /* Convert this.  */
  14     unsigned long int expect;   /* To get this.  */
  15     int base;                   /* Use this base.  */
  16     char left;                  /* With this left over.  */
  17     int err;                    /* And this in errno.  */
  18   };
  19 static CONST struct ltest tests[] =
  20   {
  21     /* First, signed numbers.  */
  22     { "   -17",         -17,            0,      0,      0 },
  23     { " +0x123fg",      0x123f,         0,      'g',    0 },
  24     { "2147483647",     2147483647,     0,      0,      0 },
  25     { "2147483648",     2147483647,     0,      0,      ERANGE },
  26     { "214748364888",   2147483647,     0,      0,      ERANGE },
  27     { "2147483650",     2147483647,     0,      0,      ERANGE },
  28     { "-2147483649",    -2147483648,    0,      0,      ERANGE },
  29     { "-2147483648",    -2147483648,    0,      0,      0 },
  30     { "0123",           0123,           0,      0,      0 },
  31     { "0x1122334455z",  2147483647,     16,     'z',    ERANGE },
  32     { "0x0xc",          0,              0,      'x',    0 },
  33     { "yz!",            34*36+35,       36,     '!',    0 },
  34     { NULL,             0,              0,      0,      0 },
  35
  36     /* Then unsigned.  */
  37     { "  0",            0,              0,      0,      0 },
  38     { "0xffffffffg",    0xffffffff,     0,      'g',    0 },
  39     { "0xf1f2f3f4f5",   0xffffffff,     0,      0,      ERANGE },
  40     { "-0x123456789",   0xffffffff,     0,      0,      ERANGE },
  41     { "-0xfedcba98",    -0xfedcba98,    0,      0,      0 },
  42     { NULL,             0,              0,      0,      0 },
  43   };
  44
  45 static void EXFUN(expand, (char *dst, int c));
  46
  47 int
  48 DEFUN_VOID(main)
  49 {
  50   register CONST struct ltest *lt;
  51   char *ep;
  52   int status = 0;
  53
  54   for (lt = tests; lt->str != NULL; ++lt)
  55     {
  56       register long int l;
  57
  58       errno = 0;
  59       l = strtol(lt->str, &ep, lt->base);
  60       printf("strtol(\"%s\", , %d) test %u",
  61              lt->str, lt->base, (unsigned int) (lt - tests));
  62       if (l == (long int) lt->expect && *ep == lt->left && errno == lt->err)
  63         puts("\tOK");
  64       else
  65         {
  66           puts("\tBAD");
  67           if (l != (long int) lt->expect)
  68             printf("  returns %ld, expected %ld\n",
  69                    l, (long int) lt->expect);
  70           if (lt->left != *ep)
  71             {
  72               char exp1[5], exp2[5];
  73               expand(exp1, *ep);
  74               expand(exp2, lt->left);
  75               printf("  leaves '%s', expected '%s'\n", exp1, exp2);
  76             }
  77           if (errno != lt->err)
  78             printf("  errno %d (%s)  instead of %d (%s)\n",
  79                    errno, strerror(errno), lt->err, strerror(lt->err));
  80           status = 1;
  81         }
  82     }
  83
  84   for (++lt; lt->str != NULL; lt++)
  85     {
  86       register unsigned long int ul;
  87
  88       errno = 0;
  89       ul = strtoul(lt->str, &ep, lt->base);
  90       printf("strtoul(\"%s\", , %d) test %u",
  91              lt->str, lt->base, (unsigned int) (lt - tests));
  92       if (ul == lt->expect && *ep == lt->left && errno == lt->err)
  93         puts("\tOK");
  94       else
  95         {
  96           puts("\tBAD");
  97           if (ul != lt->expect)
  98             printf("  returns %lu, expected %lu\n",
  99                    ul, lt->expect);
 100           if (lt->left != *ep)
 101             {
 102               char exp1[5], exp2[5];
 103               expand(exp1, *ep);
 104               expand(exp2, lt->left);
 105               printf("  leaves '%s', expected '%s'\n", exp1, exp2);
 106             }
 107           if (errno != lt->err)
 108             printf("  errno %d (%s) instead of %d (%s)\n",
 109                    errno, strerror(errno), lt->err, strerror(lt->err));
 110           status = 1;
 111         }
 112     }
 113
 114   exit(status ? EXIT_FAILURE : EXIT_SUCCESS);
 115 }
 116
 117 static void
 118 DEFUN(expand, (dst, c), register char *dst AND register int c)
 119 {
 120   if (isprint(c))
 121     {
 122       dst[0] = c;
 123       dst[1] = '\0';
 124     }
 125   else
 126     (void) sprintf(dst, "%#.3o", (unsigned int) c);
 127 }