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/* Test locale support in C++ functions.
Copyright 2001-2003, 2007 Free Software Foundation, Inc.
This file is part of the GNU MP Library test suite.
The GNU MP Library test suite is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
The GNU MP Library test suite 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 General
Public License for more details.
You should have received a copy of the GNU General Public License along with
the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
#include <clocale>
#include <iostream>
#include <cstdlib>
#include "gmp.h"
#include "gmp-impl.h"
#include "tests.h"
using namespace std;
extern "C" {
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());
mpf_set_ui (got, 123); // dummy initial value
if (! (is >> got))
{
cout << "istream mpf_t operator>> error\n";
cout << " point " << point[i] << "\n";
cout << " str \"" << str << "\"\n";
cout << " localeconv point \""
<< GMP_DECIMAL_POINT << "\"\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";
cout << " localeconv point \""
<< GMP_DECIMAL_POINT << "\"\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())
{
check_input ();
check_output ();
}
else
{
cout << "Replacing decimal point didn't work, tests skipped\n";
}
tests_end ();
return 0;
}
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