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// 1999-11-15 Kevin Ediger <kediger@licor.com>
// test the floating point inserters (facet num_put)
// Copyright (C) 1999, 2002 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library 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 2, or (at your option)
// any later version.
// This 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 General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
#include <cstdio> // for sprintf
#include <cmath> // for abs
#include <cfloat> // for DBL_EPSILON
#include <iostream>
#include <iomanip>
#include <locale>
#include <sstream>
#include <limits>
#include <testsuite_hooks.h>
using namespace std;
#ifndef DEBUG_ASSERT
# define TEST_NUMPUT_VERBOSE 1
#endif
struct _TestCase
{
double val;
int precision;
int width;
char decimal;
char fill;
bool fixed;
bool scientific;
bool showpos;
bool showpoint;
bool uppercase;
bool internal;
bool left;
bool right;
const char* result;
#if _GLIBCPP_USE_WCHAR_T
const wchar_t* wresult;
#endif
};
static bool T=true;
static bool F=false;
static _TestCase testcases[] =
{
#if _GLIBCPP_USE_WCHAR_T
// standard output (no formatting applied) 1-4
{ 1.2, 6,0,'.',' ', F,F,F,F,F,F,F,F, "1.2",L"1.2" },
{ 54, 6,0,'.',' ', F,F,F,F,F,F,F,F, "54",L"54" },
{ -.012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-0.012",L"-0.012" },
{ -.00000012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-1.2e-07",L"-1.2e-07" },
// fixed formatting 5-11
{ 10.2345, 0,0,'.',' ', T,F,F,F,F,F,F,F, "10",L"10" },
{ 10.2345, 0,0,'.',' ', T,F,F,T,F,F,F,F, "10.",L"10." },
{ 10.2345, 1,0,'.',' ', T,F,F,F,F,F,F,F, "10.2",L"10.2" },
{ 10.2345, 4,0,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
{ 10.2345, 6,0,'.',' ', T,F,T,F,F,F,F,F, "+10.234500",L"+10.234500" },
{ -10.2345, 6,0,'.',' ', T,F,F,F,F,F,F,F, "-10.234500",L"-10.234500" },
{ -10.2345, 6,0,',',' ', T,F,F,F,F,F,F,F, "-10,234500",L"-10,234500" },
// fixed formatting with width 12-22
{ 10.2345, 4,5,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
{ 10.2345, 4,6,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
{ 10.2345, 4,7,'.',' ', T,F,F,F,F,F,F,F, "10.2345",L"10.2345" },
{ 10.2345, 4,8,'.',' ', T,F,F,F,F,F,F,F, " 10.2345",L" 10.2345" },
{ 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,F, " 10.2345",L" 10.2345" },
{ 10.2345, 4,10,'.',' ', T,F,F,F,F,F,T,F, "10.2345 ",L"10.2345 " },
{ 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,T, " 10.2345",L" 10.2345" },
{ 10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, " 10.2345",L" 10.2345" },
{ -10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, "- 10.2345",L"- 10.2345" },
{ -10.2345, 4,10,'.','A', T,F,F,F,F,T,F,F, "-AA10.2345",L"-AA10.2345" },
{ 10.2345, 4,10,'.','#', T,F,T,F,F,T,F,F, "+##10.2345",L"+##10.2345" },
// scientific formatting 23-29
{ 1.23e+12, 1,0,'.',' ', F,T,F,F,F,F,F,F, "1.2e+12",L"1.2e+12" },
{ 1.23e+12, 1,0,'.',' ', F,T,F,F,T,F,F,F, "1.2E+12",L"1.2E+12" },
{ 1.23e+12, 2,0,'.',' ', F,T,F,F,F,F,F,F, "1.23e+12",L"1.23e+12" },
{ 1.23e+12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "1.230e+12",L"1.230e+12" },
{ 1.23e+12, 3,0,'.',' ', F,T,T,F,F,F,F,F, "+1.230e+12",L"+1.230e+12" },
{ -1.23e-12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "-1.230e-12",L"-1.230e-12" },
{ 1.23e+12, 3,0,',',' ', F,T,F,F,F,F,F,F, "1,230e+12",L"1,230e+12" },
#else
// standard output (no formatting applied)
{ 1.2, 6,0,'.',' ', F,F,F,F,F,F,F,F, "1.2" },
{ 54, 6,0,'.',' ', F,F,F,F,F,F,F,F, "54" },
{ -.012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-0.012" },
{ -.00000012, 6,0,'.',' ', F,F,F,F,F,F,F,F, "-1.2e-07" },
// fixed formatting
{ 10.2345, 0,0,'.',' ', T,F,F,F,F,F,F,F, "10" },
{ 10.2345, 0,0,'.',' ', T,F,F,T,F,F,F,F, "10." },
{ 10.2345, 1,0,'.',' ', T,F,F,F,F,F,F,F, "10.2" },
{ 10.2345, 4,0,'.',' ', T,F,F,F,F,F,F,F, "10.2345" },
{ 10.2345, 6,0,'.',' ', T,F,T,F,F,F,F,F, "+10.234500" },
{ -10.2345, 6,0,'.',' ', T,F,F,F,F,F,F,F, "-10.234500" },
{ -10.2345, 6,0,',',' ', T,F,F,F,F,F,F,F, "-10,234500" },
// fixed formatting with width
{ 10.2345, 4,5,'.',' ', T,F,F,F,F,F,F,F, "10.2345" },
{ 10.2345, 4,6,'.',' ', T,F,F,F,F,F,F,F, "10.2345" },
{ 10.2345, 4,7,'.',' ', T,F,F,F,F,F,F,F, "10.2345" },
{ 10.2345, 4,8,'.',' ', T,F,F,F,F,F,F,F, " 10.2345" },
{ 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,F, " 10.2345" },
{ 10.2345, 4,10,'.',' ', T,F,F,F,F,F,T,F, "10.2345 " },
{ 10.2345, 4,10,'.',' ', T,F,F,F,F,F,F,T, " 10.2345" },
{ 10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, " 10.2345" },
{ -10.2345, 4,10,'.',' ', T,F,F,F,F,T,F,F, "- 10.2345" },
{ -10.2345, 4,10,'.','A', T,F,F,F,F,T,F,F, "-AA10.2345" },
{ 10.2345, 4,10,'.','#', T,F,T,F,F,T,F,F, "+##10.2345" },
// scientific formatting
{ 1.23e+12, 1,0,'.',' ', F,T,F,F,F,F,F,F, "1.2e+12" },
{ 1.23e+12, 1,0,'.',' ', F,T,F,F,T,F,F,F, "1.2E+12" },
{ 1.23e+12, 2,0,'.',' ', F,T,F,F,F,F,F,F, "1.23e+12" },
{ 1.23e+12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "1.230e+12" },
{ 1.23e+12, 3,0,'.',' ', F,T,T,F,F,F,F,F, "+1.230e+12" },
{ -1.23e-12, 3,0,'.',' ', F,T,F,F,F,F,F,F, "-1.230e-12" },
{ 1.23e+12, 3,0,',',' ', F,T,F,F,F,F,F,F, "1,230e+12" },
#endif
};
template<typename _CharT>
class testpunct : public numpunct<_CharT>
{
public:
typedef _CharT char_type;
const char_type dchar;
explicit
testpunct(char_type decimal_char) : numpunct<_CharT>(), dchar(decimal_char)
{ }
protected:
char_type
do_decimal_point() const
{ return dchar; }
char_type
do_thousands_sep() const
{ return ','; }
string
do_grouping() const
{ return string(); }
};
template<typename _CharT>
void apply_formatting(const _TestCase & tc, basic_ostream<_CharT> & os)
{
os.precision(tc.precision);
os.width(tc.width);
os.fill(static_cast<_CharT>(tc.fill));
if (tc.fixed)
os.setf(ios::fixed);
if (tc.scientific)
os.setf(ios::scientific);
if (tc.showpos)
os.setf(ios::showpos);
if (tc.showpoint)
os.setf(ios::showpoint);
if (tc.uppercase)
os.setf(ios::uppercase);
if (tc.internal)
os.setf(ios::internal);
if (tc.left)
os.setf(ios::left);
if (tc.right)
os.setf(ios::right);
}
int
test01()
{
bool test = true;
for (int j=0; j<sizeof(testcases)/sizeof(testcases[0]); j++)
{
_TestCase & tc = testcases[j];
#ifdef TEST_NUMPUT_VERBOSE
cout << "expect: " << tc.result << endl;
#endif
// test double with char type
{
testpunct<char>* __tp = new testpunct<char>(tc.decimal);
ostringstream os;
locale __loc(os.getloc(), __tp);
os.imbue(__loc);
apply_formatting(tc, os);
os << tc.val;
#ifdef TEST_NUMPUT_VERBOSE
cout << j << "result 1: " << os.str() << endl;
#endif
VERIFY( os && os.str() == tc.result );
}
// test long double with char type
{
testpunct<char>* __tp = new testpunct<char>(tc.decimal);
ostringstream os;
locale __loc(os.getloc(), __tp);
os.imbue(__loc);
apply_formatting(tc, os);
os << (long double)tc.val;
#ifdef TEST_NUMPUT_VERBOSE
cout << j << "result 2: " << os.str() << endl;
#endif
VERIFY( os && os.str() == tc.result );
}
#if _GLIBCPP_USE_WCHAR_T
// test double with wchar_t type
{
testpunct<wchar_t>* __tp = new testpunct<wchar_t>(tc.decimal);
wostringstream os;
locale __loc(os.getloc(), __tp);
os.imbue(__loc);
apply_formatting(tc, os);
os << tc.val;
VERIFY( os && os.str() == tc.wresult );
}
// test long double with wchar_t type
{
testpunct<wchar_t>* __tp = new testpunct<wchar_t>(tc.decimal);
wostringstream os;
locale __loc(os.getloc(), __tp);
os.imbue(__loc);
apply_formatting(tc, os);
os << (long double)tc.val;
VERIFY( os && os.str() == tc.wresult );
}
#endif
}
return 0;
}
int
test02()
{
bool test = true;
// make sure we can output a very long float
long double val = 1.2345678901234567890123456789e+1000L;
int prec = numeric_limits<long double>::digits10;
ostringstream os;
os.precision(prec);
os.setf(ios::scientific);
os << val;
char largebuf[512];
sprintf(largebuf, "%.*Le", prec, val);
#ifdef TEST_NUMPUT_VERBOSE
cout << "expect: " << largebuf << endl;
cout << "result: " << os.str() << endl;
#endif
VERIFY(os && os.str() == largebuf);
// Make sure we can output a long float in fixed format
// without seg-faulting (libstdc++/4402)
double val2 = 3.5e230;
ostringstream os2;
os2.precision(3);
os2.setf(ios::fixed);
os2 << val2;
sprintf(largebuf, "%.*f", 3, val2);
#ifdef TEST_NUMPUT_VERBOSE
cout << "expect: " << largebuf << endl;
cout << "result: " << os2.str() << endl;
#endif
VERIFY(os2 && os2.str() == largebuf);
// Check it can be done in a locale with grouping on.
locale loc2("de_DE");
os2.imbue(loc2);
os2 << fixed << setprecision(3) << val2 << endl;
os2 << endl;
os2 << fixed << setprecision(1) << val2 << endl;
return 0;
}
template<typename T>
bool
test03_check(T n)
{
stringbuf strbuf;
ostream o(&strbuf);
const char *expect;
bool test = true;
if (numeric_limits<T>::digits + 1 == 16)
expect = "177777 ffff";
else if (numeric_limits<T>::digits + 1 == 32)
expect = "37777777777 ffffffff";
else if (numeric_limits<T>::digits + 1 == 64)
expect = "1777777777777777777777 ffffffffffffffff";
else
expect = "wow, you've got some big numbers here";
o << oct << n << ' ' << hex << n;
VERIFY ( strbuf.str() == expect );
return test;
}
int
test03()
{
short s = -1;
int i = -1;
long l = -1;
bool test = true;
test &= test03_check (s);
test &= test03_check (i);
test &= test03_check (l);
return 0;
}
// libstdc++/3655
int
test04()
{
stringbuf strbuf1, strbuf2;
ostream o1(&strbuf1), o2(&strbuf2);
bool test = true;
o1 << hex << showbase << setw(6) << internal << 0xff;
VERIFY( strbuf1.str() == "0x ff" );
// ... vs internal-adjusted const char*-type objects
o2 << hex << showbase << setw(6) << internal << "0xff";
VERIFY( strbuf2.str() == " 0xff" );
return 0;
}
int
test05()
{
double pi = 3.14159265358979323846;
ostringstream ostr;
ostr.precision(20);
ostr << pi;
string sval = ostr.str();
istringstream istr (sval);
double d;
istr >> d;
VERIFY( abs(pi-d)/pi < DBL_EPSILON );
return 0;
}
// libstdc++/9151
int
test06()
{
int prec = numeric_limits<double>::digits10 + 2;
double oval = numeric_limits<double>::min();
stringstream ostr;
ostr.precision(prec);
ostr << oval;
string sval = ostr.str();
istringstream istr (sval);
double ival;
istr >> ival;
VERIFY( abs(oval-ival)/oval < DBL_EPSILON );
return 0;
}
int
main()
{
test01();
test02();
test03();
test04();
test05();
test06();
#ifdef TEST_NUMPUT_VERBOSE
cout << "Test passed!" << endl;
#endif
return 0;
}
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