541 lines
16 KiB
C++
541 lines
16 KiB
C++
/* Test istream formatted input.
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Copyright 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <iostream>
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#include <cstdlib>
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#include <cstring>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "tests.h"
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using namespace std;
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// Under option_check_standard, the various test cases for mpz operator>>
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// are put through the standard operator>> for long, and likewise mpf
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// operator>> is put through double.
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//
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// In g++ 3.3 this results in some printouts about the final position
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// indicated for something like ".e123". Our mpf code stops at the "e"
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// since there's no mantissa digits, but g++ reads the whole thing and only
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// then decides it's bad.
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int option_check_standard = 0;
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// On some versions of g++ 2.96 it's been observed that putback() may leave
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// tellg() unchanged. We believe this is incorrect and presumably the
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// result of a bug, since for instance it's ok in g++ 2.95 and g++ 3.3. We
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// detect the problem at runtime and disable affected checks.
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int putback_tellg_works = 1;
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void
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check_putback_tellg (void)
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{
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istringstream input ("hello");
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streampos old_pos, new_pos;
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char c;
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input.get(c);
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old_pos = input.tellg();
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input.putback(c);
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new_pos = input.tellg();
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if (old_pos == new_pos)
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{
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cout << "Warning, istringstream has a bug: putback() doesn't update tellg().\n";;
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cout << "Tests on tellg() will be skipped.\n";
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putback_tellg_works = 0;
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}
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}
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#define WRONG(str) \
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do { \
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cout << str ", data[" << i << "]\n"; \
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cout << " input: \"" << data[i].input << "\"\n"; \
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cout << " flags: " << hex << input.flags() << dec << "\n"; \
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} while (0)
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void
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check_mpz (void)
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{
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static const struct {
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const char *input;
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int want_pos;
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const char *want;
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ios::fmtflags flags;
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} data[] = {
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{ "0", -1, "0", (ios::fmtflags) 0 },
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{ "123", -1, "123", (ios::fmtflags) 0 },
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{ "0123", -1, "83", (ios::fmtflags) 0 },
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{ "0x123", -1, "291", (ios::fmtflags) 0 },
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{ "-123", -1, "-123", (ios::fmtflags) 0 },
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{ "-0123", -1, "-83", (ios::fmtflags) 0 },
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{ "-0x123", -1, "-291", (ios::fmtflags) 0 },
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{ "+123", -1, "123", (ios::fmtflags) 0 },
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{ "+0123", -1, "83", (ios::fmtflags) 0 },
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{ "+0x123", -1, "291", (ios::fmtflags) 0 },
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{ "0", -1, "0", ios::dec },
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{ "1f", 1, "1", ios::dec },
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{ "011f", 3, "11", ios::dec },
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{ "123", -1, "123", ios::dec },
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{ "-1f", 2, "-1", ios::dec },
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{ "-011f", 4, "-11", ios::dec },
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{ "-123", -1, "-123", ios::dec },
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{ "+1f", 2, "1", ios::dec },
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{ "+011f", 4, "11", ios::dec },
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{ "+123", -1, "123", ios::dec },
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{ "0", -1, "0", ios::oct },
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{ "123", -1, "83", ios::oct },
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{ "-123", -1, "-83", ios::oct },
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{ "+123", -1, "83", ios::oct },
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{ "0", -1, "0", ios::hex },
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{ "123", -1, "291", ios::hex },
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{ "ff", -1, "255", ios::hex },
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{ "FF", -1, "255", ios::hex },
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{ "-123", -1, "-291", ios::hex },
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{ "-ff", -1, "-255", ios::hex },
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{ "-FF", -1, "-255", ios::hex },
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{ "+123", -1, "291", ios::hex },
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{ "+ff", -1, "255", ios::hex },
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{ "+FF", -1, "255", ios::hex },
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{ "ab", -1, "171", ios::hex },
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{ "cd", -1, "205", ios::hex },
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{ "ef", -1, "239", ios::hex },
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{ " 123", 0, NULL, (ios::fmtflags) 0 }, // not without skipws
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{ " 123", -1, "123", ios::skipws },
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};
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mpz_t got, want;
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int got_ok, want_ok;
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long got_si, want_si;
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streampos init_tellg, got_pos, want_pos;
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mpz_init (got);
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mpz_init (want);
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for (size_t i = 0; i < numberof (data); i++)
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{
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want_pos = (data[i].want_pos == -1
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? strlen (data[i].input) : data[i].want_pos);
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want_ok = (data[i].want != NULL);
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if (data[i].want != NULL)
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mpz_set_str_or_abort (want, data[i].want, 0);
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else
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mpz_set_ui (want, 0L);
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if (option_check_standard && mpz_fits_slong_p (want))
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{
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istringstream input (data[i].input);
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input.flags (data[i].flags);
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init_tellg = input.tellg();
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want_si = mpz_get_si (want);
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input >> got_si;
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got_ok = (input ? 1 : 0);
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input.clear();
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got_pos = input.tellg() - init_tellg;
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if (got_ok != want_ok)
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{
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WRONG ("stdc++ operator>> wrong status, check_mpz");
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cout << " want_ok: " << want_ok << "\n";
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cout << " got_ok: " << got_ok << "\n";
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}
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if (want_ok && got_si != want_si)
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{
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WRONG ("stdc++ operator>> wrong result, check_mpz");
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cout << " got_si: " << got_si << "\n";
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cout << " want_si: " << want_si << "\n";
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}
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if (putback_tellg_works && got_pos != want_pos)
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{
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WRONG ("stdc++ operator>> wrong position, check_mpz");
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cout << " want_pos: " << want_pos << "\n";
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cout << " got_pos: " << got_pos << "\n";
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}
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}
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{
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istringstream input (data[i].input);
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input.flags (data[i].flags);
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init_tellg = input.tellg();
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mpz_set_ui (got, 0xDEAD);
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input >> got;
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got_ok = (input ? 1 : 0);
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input.clear();
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got_pos = input.tellg() - init_tellg;
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if (got_ok != want_ok)
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{
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WRONG ("mpz operator>> wrong status");
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cout << " want_ok: " << want_ok << "\n";
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cout << " got_ok: " << got_ok << "\n";
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abort ();
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}
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if (want_ok && mpz_cmp (got, want) != 0)
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{
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WRONG ("mpz operator>> wrong result");
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mpz_trace (" got ", got);
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mpz_trace (" want", want);
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abort ();
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}
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if (putback_tellg_works && got_pos != want_pos)
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{
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WRONG ("mpz operator>> wrong position");
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cout << " want_pos: " << want_pos << "\n";
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cout << " got_pos: " << got_pos << "\n";
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abort ();
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}
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}
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}
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mpz_clear (got);
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mpz_clear (want);
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}
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void
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check_mpq (void)
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{
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static const struct {
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const char *input;
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int want_pos;
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const char *want;
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ios::fmtflags flags;
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} data[] = {
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{ "0", -1, "0", (ios::fmtflags) 0 },
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{ "00", -1, "0", (ios::fmtflags) 0 },
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{ "0x0", -1, "0", (ios::fmtflags) 0 },
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{ "123/456", -1, "123/456", ios::dec },
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{ "0123/456", -1, "123/456", ios::dec },
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{ "123/0456", -1, "123/456", ios::dec },
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{ "0123/0456", -1, "123/456", ios::dec },
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{ "123/456", -1, "83/302", ios::oct },
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{ "0123/456", -1, "83/302", ios::oct },
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{ "123/0456", -1, "83/302", ios::oct },
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{ "0123/0456", -1, "83/302", ios::oct },
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{ "ab", -1, "171", ios::hex },
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{ "cd", -1, "205", ios::hex },
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{ "ef", -1, "239", ios::hex },
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{ "0/0", -1, "0/0", (ios::fmtflags) 0 },
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{ "5/8", -1, "5/8", (ios::fmtflags) 0 },
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{ "0x5/0x8", -1, "5/8", (ios::fmtflags) 0 },
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{ "123/456", -1, "123/456", (ios::fmtflags) 0 },
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{ "123/0456", -1, "123/302", (ios::fmtflags) 0 },
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{ "123/0x456", -1, "123/1110", (ios::fmtflags) 0 },
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{ "123/0X456", -1, "123/1110", (ios::fmtflags) 0 },
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{ "0123/123", -1, "83/123", (ios::fmtflags) 0 },
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{ "0123/0123", -1, "83/83", (ios::fmtflags) 0 },
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{ "0123/0x123", -1, "83/291", (ios::fmtflags) 0 },
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{ "0123/0X123", -1, "83/291", (ios::fmtflags) 0 },
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{ "0x123/123", -1, "291/123", (ios::fmtflags) 0 },
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{ "0X123/0123", -1, "291/83", (ios::fmtflags) 0 },
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{ "0x123/0x123", -1, "291/291", (ios::fmtflags) 0 },
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{ " 123", 0, NULL, (ios::fmtflags) 0 }, // not without skipws
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{ " 123", -1, "123", ios::skipws },
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};
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mpq_t got, want;
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int got_ok, want_ok;
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long got_si, want_si;
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streampos init_tellg, got_pos, want_pos;
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mpq_init (got);
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mpq_init (want);
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for (size_t i = 0; i < numberof (data); i++)
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{
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want_pos = (data[i].want_pos == -1
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? strlen (data[i].input) : data[i].want_pos);
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want_ok = (data[i].want != NULL);
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if (data[i].want != NULL)
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mpq_set_str_or_abort (want, data[i].want, 0);
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else
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mpq_set_ui (want, 0L, 1L);
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if (option_check_standard
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&& mpz_fits_slong_p (mpq_numref(want))
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&& mpz_cmp_ui (mpq_denref(want), 1L) == 0)
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{
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istringstream input (data[i].input);
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input.flags (data[i].flags);
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init_tellg = input.tellg();
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want_si = mpz_get_si (mpq_numref(want));
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input >> got_si;
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got_ok = (input ? 1 : 0);
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input.clear();
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got_pos = input.tellg() - init_tellg;
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if (got_ok != want_ok)
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{
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WRONG ("stdc++ operator>> wrong status, check_mpq");
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cout << " want_ok: " << want_ok << "\n";
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cout << " got_ok: " << got_ok << "\n";
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}
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if (want_ok && want_si != got_si)
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{
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WRONG ("stdc++ operator>> wrong result, check_mpq");
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cout << " got_si: " << got_si << "\n";
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cout << " want_si: " << want_si << "\n";
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}
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if (putback_tellg_works && got_pos != want_pos)
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{
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WRONG ("stdc++ operator>> wrong position, check_mpq");
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cout << " want_pos: " << want_pos << "\n";
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cout << " got_pos: " << got_pos << "\n";
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}
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}
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{
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istringstream input (data[i].input);
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input.flags (data[i].flags);
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init_tellg = input.tellg();
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mpq_set_si (got, 0xDEAD, 0xBEEF);
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input >> got;
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got_ok = (input ? 1 : 0);
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input.clear();
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got_pos = input.tellg() - init_tellg;
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if (got_ok != want_ok)
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{
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WRONG ("mpq operator>> wrong status");
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cout << " want_ok: " << want_ok << "\n";
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cout << " got_ok: " << got_ok << "\n";
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abort ();
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}
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// don't use mpq_equal, since we allow non-normalized values to be
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// read, which can trigger ASSERTs in mpq_equal
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if (want_ok && (mpz_cmp (mpq_numref (got), mpq_numref(want)) != 0
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|| mpz_cmp (mpq_denref (got), mpq_denref(want)) != 0))
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{
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WRONG ("mpq operator>> wrong result");
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mpq_trace (" got ", got);
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mpq_trace (" want", want);
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abort ();
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}
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if (putback_tellg_works && got_pos != want_pos)
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{
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WRONG ("mpq operator>> wrong position");
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cout << " want_pos: " << want_pos << "\n";
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cout << " got_pos: " << got_pos << "\n";
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abort ();
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}
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}
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}
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mpq_clear (got);
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mpq_clear (want);
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}
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void
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check_mpf (void)
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{
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static const struct {
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const char *input;
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int want_pos;
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const char *want;
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ios::fmtflags flags;
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} data[] = {
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{ "0", -1, "0", (ios::fmtflags) 0 },
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{ "+0", -1, "0", (ios::fmtflags) 0 },
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{ "-0", -1, "0", (ios::fmtflags) 0 },
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{ "0.0", -1, "0", (ios::fmtflags) 0 },
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{ "0.", -1, "0", (ios::fmtflags) 0 },
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{ ".0", -1, "0", (ios::fmtflags) 0 },
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{ "+.0", -1, "0", (ios::fmtflags) 0 },
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{ "-.0", -1, "0", (ios::fmtflags) 0 },
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{ "+0.00", -1, "0", (ios::fmtflags) 0 },
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{ "-0.000", -1, "0", (ios::fmtflags) 0 },
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{ "+0.00", -1, "0", (ios::fmtflags) 0 },
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{ "-0.000", -1, "0", (ios::fmtflags) 0 },
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{ "0.0e0", -1, "0", (ios::fmtflags) 0 },
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{ "0.e0", -1, "0", (ios::fmtflags) 0 },
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{ ".0e0", -1, "0", (ios::fmtflags) 0 },
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{ "0.0e-0", -1, "0", (ios::fmtflags) 0 },
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{ "0.e-0", -1, "0", (ios::fmtflags) 0 },
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{ ".0e-0", -1, "0", (ios::fmtflags) 0 },
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{ "0.0e+0", -1, "0", (ios::fmtflags) 0 },
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{ "0.e+0", -1, "0", (ios::fmtflags) 0 },
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{ ".0e+0", -1, "0", (ios::fmtflags) 0 },
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{ "1", -1, "1", (ios::fmtflags) 0 },
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{ "+1", -1, "1", (ios::fmtflags) 0 },
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{ "-1", -1, "-1", (ios::fmtflags) 0 },
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{ " 0", 0, NULL, (ios::fmtflags) 0 }, // not without skipws
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{ " 0", -1, "0", ios::skipws },
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{ " +0", -1, "0", ios::skipws },
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{ " -0", -1, "0", ios::skipws },
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{ "+-123", 1, NULL, (ios::fmtflags) 0 },
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{ "-+123", 1, NULL, (ios::fmtflags) 0 },
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{ "1e+-123", 3, NULL, (ios::fmtflags) 0 },
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{ "1e-+123", 3, NULL, (ios::fmtflags) 0 },
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{ "e123", 0, NULL, (ios::fmtflags) 0 }, // at least one mantissa digit
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{ ".e123", 1, NULL, (ios::fmtflags) 0 },
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{ "+.e123", 2, NULL, (ios::fmtflags) 0 },
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{ "-.e123", 2, NULL, (ios::fmtflags) 0 },
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{ "123e", 4, NULL, (ios::fmtflags) 0 }, // at least one exponent digit
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{ "123e-", 5, NULL, (ios::fmtflags) 0 },
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{ "123e+", 5, NULL, (ios::fmtflags) 0 },
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};
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mpf_t got, want;
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int got_ok, want_ok;
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double got_d, want_d;
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streampos init_tellg, got_pos, want_pos;
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mpf_init (got);
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mpf_init (want);
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for (size_t i = 0; i < numberof (data); i++)
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{
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want_pos = (data[i].want_pos == -1
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? strlen (data[i].input) : data[i].want_pos);
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want_ok = (data[i].want != NULL);
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if (data[i].want != NULL)
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mpf_set_str_or_abort (want, data[i].want, 0);
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else
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mpf_set_ui (want, 0L);
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want_d = mpf_get_d (want);
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if (option_check_standard && mpf_cmp_d (want, want_d) == 0)
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{
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istringstream input (data[i].input);
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input.flags (data[i].flags);
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init_tellg = input.tellg();
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input >> got_d;
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got_ok = (input ? 1 : 0);
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input.clear();
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got_pos = input.tellg() - init_tellg;
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if (got_ok != want_ok)
|
|
{
|
|
WRONG ("stdc++ operator>> wrong status, check_mpf");
|
|
cout << " want_ok: " << want_ok << "\n";
|
|
cout << " got_ok: " << got_ok << "\n";
|
|
}
|
|
if (want_ok && want_d != got_d)
|
|
{
|
|
WRONG ("stdc++ operator>> wrong result, check_mpf");
|
|
cout << " got: " << got_d << "\n";
|
|
cout << " want: " << want_d << "\n";
|
|
}
|
|
if (putback_tellg_works && got_pos != want_pos)
|
|
{
|
|
WRONG ("stdc++ operator>> wrong position, check_mpf");
|
|
cout << " want_pos: " << want_pos << "\n";
|
|
cout << " got_pos: " << got_pos << "\n";
|
|
}
|
|
}
|
|
|
|
{
|
|
istringstream input (data[i].input);
|
|
input.flags (data[i].flags);
|
|
init_tellg = input.tellg();
|
|
|
|
mpf_set_ui (got, 0xDEAD);
|
|
input >> got;
|
|
got_ok = (input ? 1 : 0);
|
|
input.clear();
|
|
got_pos = input.tellg() - init_tellg;
|
|
|
|
if (got_ok != want_ok)
|
|
{
|
|
WRONG ("mpf operator>> wrong status");
|
|
cout << " want_ok: " << want_ok << "\n";
|
|
cout << " got_ok: " << got_ok << "\n";
|
|
abort ();
|
|
}
|
|
if (want_ok && mpf_cmp (got, want) != 0)
|
|
{
|
|
WRONG ("mpf operator>> wrong result");
|
|
mpf_trace (" got ", got);
|
|
mpf_trace (" want", want);
|
|
abort ();
|
|
}
|
|
if (putback_tellg_works && got_pos != want_pos)
|
|
{
|
|
WRONG ("mpf operator>> wrong position");
|
|
cout << " want_pos: " << want_pos << "\n";
|
|
cout << " got_pos: " << got_pos << "\n";
|
|
abort ();
|
|
}
|
|
}
|
|
}
|
|
|
|
mpf_clear (got);
|
|
mpf_clear (want);
|
|
}
|
|
|
|
|
|
|
|
int
|
|
main (int argc, char *argv[])
|
|
{
|
|
if (argc > 1 && strcmp (argv[1], "-s") == 0)
|
|
option_check_standard = 1;
|
|
|
|
tests_start ();
|
|
|
|
check_putback_tellg ();
|
|
check_mpz ();
|
|
check_mpq ();
|
|
check_mpf ();
|
|
|
|
tests_end ();
|
|
return 0;
|
|
}
|