stdio-common/tst-printfsz.c

   1 /* Based on code by Larry McVoy <lm@neteng.engr.sgi.com>.  */
   2 #include <printf.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <libc-internal.h>
   6
   7 #define V       12345678.12345678
   8
   9
  10 int
  11 main (int argc, char *argv[])
  12 {
  13   char buf[1024];
  14   int result = 0;
  15
  16   /* Testing printf_size_info requires using the deprecated
  17      register_printf_function, resulting in warnings
  18      "'register_printf_function' is deprecated".  */
  19   DIAG_PUSH_NEEDS_COMMENT;
  20   DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
  21   /* Register the printf handlers.  */
  22   register_printf_function ('b', printf_size, printf_size_info);
  23   register_printf_function ('B', printf_size, printf_size_info);
  24   DIAG_POP_NEEDS_COMMENT;
  25
  26   /* All of the formats here use the nonstandard extension specifier
  27      just registered, so compiler checking will never grok them.  */
  28   DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat");
  29   DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat-extra-args");
  30
  31   sprintf (buf, "%g %b %B %.0b %.0B %.1b %.1B %8.0b %08.0B",
  32            V, 1025., V, V, V, V, V, V, V, V);
  33   fputs (buf, stdout);
  34   if (strcmp (buf, "\
  35 1.23457e+07 1.001k 12.346M 12m 12M 11.8m 12.3M      12m 0000012M"))
  36     {
  37       result = 1;
  38       fputs (" -> WRONG\n", stdout);
  39     }
  40   else
  41     fputs (" -> OK\n", stdout);
  42
  43   sprintf (buf, "%b|%B|%-20.2b|%-10.0b|%-10.8b|%-10.2B|",
  44            V, V, V, V, V, V, V, V, V, V, V);
  45   fputs (buf, stdout);
  46   if (strcmp (buf, "\
  47 11.774m|12.346M|11.77m              |12m       |11.77375614m|12.35M    |"))
  48     {
  49       result = 1;
  50       fputs (" -> WRONG\n", stdout);
  51     }
  52   else
  53     fputs (" -> OK\n", stdout);
  54
  55   sprintf (buf, "%#.0B %*.0b %10.*b %*.*B %10.2B",
  56            V, 2, V, 2, V, 10, 2, V, V);
  57   fputs (buf, stdout);
  58   if (strcmp (buf, "12.M 12m     11.77m     12.35M     12.35M"))
  59     {
  60       result = 1;
  61       fputs (" -> WRONG\n", stdout);
  62     }
  63   else
  64     fputs (" -> OK\n", stdout);
  65
  66   sprintf (buf, "%6B %6.1B %b %B %b %B",
  67            V, V, 1000.0, 1000.0, 1024.0, 1024.0);
  68   fputs (buf, stdout);
  69   if (strcmp (buf, "12.346M  12.3M 1000.000  1.000K 1.000k 1.024K"))
  70     {
  71       result = 1;
  72       fputs (" -> WRONG\n", stdout);
  73     }
  74   else
  75     fputs (" -> OK\n", stdout);
  76
  77   return result;
  78 }