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/* Test locale support in C++ functions.
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 "gmp.h"
#include "gmp-impl.h"
#include "tests.h"
using namespace std;
char point_string[2];
#if HAVE_STD__LOCALE
// Like std::numpunct, but with decimal_point coming from point_string[].
class my_numpunct : public numpunct<char> {
public:
explicit my_numpunct (size_t r = 0) : numpunct<char>(r) { }
protected:
char do_decimal_point() const { return point_string[0]; }
};
#endif
void
set_point (char c)
{
point_string[0] = c;
#if HAVE_STD__LOCALE
locale loc (locale::classic(), new my_numpunct ());
locale::global (loc);
#endif
}
void
check_input (void)
{
static const struct {
const char *str1;
const char *str2;
double want;
} data[] = {
{ "1","", 1.0 },
{ "1","0", 1.0 },
{ "1","00", 1.0 },
{ "","5", 0.5 },
{ "0","5", 0.5 },
{ "00","5", 0.5 },
{ "00","50", 0.5 },
{ "1","5", 1.5 },
{ "1","5e1", 15.0 },
};
static char point[] = {
'.', ',', 'x', '\xFF'
};
mpf_t got;
mpf_init (got);
for (size_t i = 0; i < numberof (point); i++)
{
set_point (point[i]);
for (int neg = 0; neg <= 1; neg++)
{
for (size_t j = 0; j < numberof (data); j++)
{
string str = string(data[j].str1)+point[i]+string(data[j].str2);
if (neg)
str = "-" + str;
istringstream is (str.c_str());
// dummy initial value
mpf_set_d (got, 123.0);
if (! (is >> got))
{
cout << "istream mpf_t operator>> error\n";
cout << " point " << point[i] << "\n";
cout << " str \"" << str << "\"\n";
abort ();
}
double want = data[j].want;
if (neg)
want = -want;
if (mpf_cmp_d (got, want) != 0)
{
cout << "istream mpf_t operator>> wrong\n";
cout << " point " << point[i] << "\n";
cout << " str \"" << str << "\"\n";
cout << " got " << got << "\n";
cout << " want " << want << "\n";
abort ();
}
}
}
}
mpf_clear (got);
}
void
check_output (void)
{
static char point[] = {
'.', ',', 'x', '\xFF'
};
for (size_t i = 0; i < numberof (point); i++)
{
set_point (point[i]);
ostringstream got;
mpf_t f;
mpf_init (f);
mpf_set_d (f, 1.5);
got << f;
mpf_clear (f);
string want = string("1") + point[i] + string("5");
if (want.compare (got.str()) != 0)
{
cout << "ostream mpf_t operator<< doesn't respect locale\n";
cout << " point " << point[i] << "\n";
cout << " got \"" << got.str() << "\"\n";
cout << " want \"" << want << "\"\n";
abort ();
}
}
}
int
replacement_works (void)
{
set_point ('x');
mpf_t f;
mpf_init (f);
mpf_set_d (f, 1.5);
ostringstream s;
s << f;
mpf_clear (f);
return (s.str().compare("1x5") == 0);
}
int
main (void)
{
tests_start ();
if (replacement_works())
{
// not yet supported
// check_input ();
check_output ();
}
else
{
cout << "Replacing decimal point didn't work, tests skipped\n";
}
tests_end ();
return 0;
}
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