/* 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-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 ;
}
Messung V0.5 in Prozent C=96 H=96 G=95
¤ Dauer der Verarbeitung: 0.3 Sekunden
¤
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