t-ostream.cc

a very popular packet of cryptography tools,it encloses the most common used algorithm and protocols

/* Test ostream formatted output.

Copyright 2001, 2002 Free Software Foundation, Inc.

This file is part of the GNU MP Library.

The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.

The GNU MP Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
License for more details.

You should have received a copy of the GNU Lesser General Public License
along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */

#include <iostream>
#include <strstream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gmp.h"
#include "gmp-impl.h"
#include "tests.h"

using namespace std;


int   option_check_standard = 0;


#define CALL(expr)                                      \
  do {                                                  \
    got.flags (data[i].flags);                          \
    got.width (data[i].width);                          \
    got.precision (data[i].precision);                  \
    if (data[i].fill == '\0')                           \
      got.fill (' ');                                   \
    else                                                \
      got.fill (data[i].fill);                          \
                                                        \
    expr;                                               \
                                                        \
    if (!got)                                           \
      {                                                 \
        printf ("\"got\" output error\n");              \
        abort ();                                       \
      }                                                 \
    if (got.width() != 0)                               \
      {                                                 \
        printf ("\"got\" width not reset to 0\n");      \
        abort ();                                       \
      }                                                 \
                                                        \
  } while (0)


#define DUMP()                                                  \
  do {                                                          \
    printf ("  want:  |%s|\n", data[i].want);                   \
    printf ("  got:   |%s|\n", got.str());                      \
    printf ("  width: %d\n",   data[i].width);                  \
    printf ("  prec:  %d\n",   got.precision());                \
    printf ("  flags: 0x%lX\n", (unsigned long) got.flags());   \
  } while (0)

#define ABORT() \
  do {          \
    DUMP ();    \
    abort ();   \
  } while (0)

void
check_mpz (void)
{
  static const struct {
    const char     *z;
    const char     *want;
    ios::fmtflags  flags;
    int            width;
    int            precision;
    char           fill;

  } data[] = {

    { "0", "0", ios::dec },

    { "0", "0", ios::oct },
    { "0", "0", ios::oct | ios::showbase },

    { "0", "0", ios::hex },
    { "0", "0x0", ios::hex | ios::showbase },
    { "0", "0X0", ios::hex | ios::showbase | ios::uppercase },

    { "1", "****1", ios::dec, 5, 0, '*' },

    { "-1", "   -1",  ios::dec | ios::right,    5 },
    { "-1", "-   1",  ios::dec | ios::internal, 5 },
    { "-1", "-1   ",  ios::dec | ios::left,     5 },

    { "1", "   0x1", ios::hex | ios::showbase | ios::right,    6 },
    { "1", "0x   1", ios::hex | ios::showbase | ios::internal, 6 },
    { "1", "0x1   ", ios::hex | ios::showbase | ios::left,     6 },

    { "1", "   +0x1", ios::hex | ios::showbase | ios::showpos | ios::right,    7 },
    { "1", "+0x   1", ios::hex | ios::showbase | ios::showpos | ios::internal, 7 },
    { "1", "+0x1   ", ios::hex | ios::showbase | ios::showpos | ios::left,     7 },

    {  "123",    "7b", ios::hex },
    {  "123",    "7B", ios::hex | ios::uppercase },
    {  "123",  "0x7b", ios::hex | ios::showbase },
    {  "123",  "0X7B", ios::hex | ios::showbase | ios::uppercase },
    { "-123", "-0x7b", ios::hex | ios::showbase },
    { "-123", "-0X7B", ios::hex | ios::showbase | ios::uppercase },

    {  "123",   "173", ios::oct },
    {  "123",   "173", ios::oct | ios::uppercase },
    {  "123",  "0173", ios::oct | ios::showbase },
    {  "123",  "0173", ios::oct | ios::showbase | ios::uppercase },
    { "-123", "-0173", ios::oct | ios::showbase },
    { "-123", "-0173", ios::oct | ios::showbase | ios::uppercase },

  };

  size_t  i;
  mpz_t   z;

  mpz_init (z);

  for (i = 0; i < numberof (data); i++)
    {
      mpz_set_str_or_abort (z, data[i].z, 0);

      if (option_check_standard
          && mpz_fits_slong_p (z)

          /* no negatives or showpos in hex or oct */
          && (((data[i].flags & ios::basefield) == ios::hex
               || (data[i].flags & ios::basefield) == ios::oct)
              ? (mpz_sgn (z) >= 0
                 && ! (data[i].flags & ios::showpos))
              : 1)
          )
        {
          ostrstream  got;
          long  n = mpz_get_si (z);
          CALL (got << n << '\0');
          if (strcmp (got.str(), data[i].want) != 0)
            {
              printf ("check_mpz data[%d] doesn't match standard ostream output\n", i);
              printf ("  z:     %s\n", data[i].z);
              printf ("  n:     %ld\n", n);
              DUMP ();
            }
        }

      {
        ostrstream  got;
        CALL (operator<< (got, z) << '\0');
        if (strcmp (got.str(), data[i].want) != 0)
          {
            printf ("mpz operator<< wrong, data[%d]\n", i);
            printf ("  z:     %s\n", data[i].z);
            mpz_trace ("  z", z);
            ABORT ();
          }
      }
    }

  mpz_clear (z);
}

void
check_mpq (void)
{
  static const struct {
    const char     *q;
    const char     *want;
    ios::fmtflags  flags;
    int            width;
    int            precision;
    char           fill;

  } data[] = {

    { "0", "0", ios::dec },
    { "0", "0", ios::hex },
    { "0", "0x0", ios::hex | ios::showbase },
    { "0", "0X0", ios::hex | ios::showbase | ios::uppercase },

    { "5/8", "5/8", ios::dec },
    { "5/8", "0X5/0X8", ios::hex | ios::showbase | ios::uppercase },

    /* zero denominator with showbase */
    { "0/0",   "       0/0", ios::oct | ios::showbase, 10 },
    { "0/0",   "       0/0", ios::dec | ios::showbase, 10 },
    { "0/0",   "   0x0/0x0", ios::hex | ios::showbase, 10 },
    { "123/0", "    0173/0", ios::oct | ios::showbase, 10 },
    { "123/0", "     123/0", ios::dec | ios::showbase, 10 },
    { "123/0", "  0x7b/0x0", ios::hex | ios::showbase, 10 },
    { "123/0", "  0X7B/0X0", ios::hex | ios::showbase | ios::uppercase, 10 },
    { "0/123", "    0/0173", ios::oct | ios::showbase, 10 },
    { "0/123", "     0/123", ios::dec | ios::showbase, 10 },
    { "0/123", "  0x0/0x7b", ios::hex | ios::showbase, 10 },
    { "0/123", "  0X0/0X7B", ios::hex | ios::showbase | ios::uppercase, 10 },
  };

  size_t  i;
  mpq_t   q;

  mpq_init (q);

#define mpq_integer_p(q)  (mpz_cmp_ui (mpq_denref(q), 1L) == 0)

  for (i = 0; i < numberof (data); i++)
    {
      mpq_set_str_or_abort (q, data[i].q, 0);