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wxWidgets/tests/longlong/longlongtest.cpp
Michael Wetherell 1d805c1468 Fix for 64-bit systems 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37596 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2006-02-15 12:59:37 +00:00

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///////////////////////////////////////////////////////////////////////////////
// Name: tests/longlong/longlong.cpp
// Purpose: wxLongLong unit test
// Author: Vadim Zeitlin, Wlodzimierz ABX Skiba
// Created: 2004-04-01
// RCS-ID: $Id$
// Copyright: (c) 2004 Vadim Zeitlin, Wlodzimierz Skiba
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "testprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif // WX_PRECOMP
#include "wx/longlong.h"
#include "wx/timer.h"
#if wxUSE_LONGLONG
// ----------------------------------------------------------------------------
// helpers for testing
// ----------------------------------------------------------------------------
// number of iterations in loops
#define ITEMS 1000
// make a 64 bit number from 4 16 bit ones
#define MAKE_LL(x1, x2, x3, x4) wxLongLong((x1 << 16) | x2, (x3 << 16) | x3)
// get a random 64 bit number
#define RAND_LL() MAKE_LL(rand(), rand(), rand(), rand())
static const long testLongs[] =
{
0,
1,
-1,
LONG_MAX,
LONG_MIN,
0x1234,
-0x1234
};
// ----------------------------------------------------------------------------
// test class
// ----------------------------------------------------------------------------
class LongLongTestCase : public CppUnit::TestCase
{
public:
LongLongTestCase();
private:
CPPUNIT_TEST_SUITE( LongLongTestCase );
CPPUNIT_TEST( Conversion );
CPPUNIT_TEST( Comparison );
CPPUNIT_TEST( Addition );
CPPUNIT_TEST( Multiplication );
CPPUNIT_TEST( Division );
CPPUNIT_TEST( BitOperations );
CPPUNIT_TEST( ToString );
CPPUNIT_TEST_SUITE_END();
void Conversion();
void Comparison();
void Addition();
void Multiplication();
void Division();
void BitOperations();
void ToString();
DECLARE_NO_COPY_CLASS(LongLongTestCase)
};
// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( LongLongTestCase );
// also include in it's own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( LongLongTestCase, "LongLongTestCase" );
LongLongTestCase::LongLongTestCase()
{
srand((unsigned)time(NULL));
}
void LongLongTestCase::Conversion()
{
for ( size_t n = 0; n < ITEMS; n++ )
{
wxLongLong a = RAND_LL();
wxLongLong b(a.GetHi(), a.GetLo());
CPPUNIT_ASSERT( a == b );
#if wxUSE_LONGLONG_WX
wxLongLongWx c(a.GetHi(), a.GetLo());
CPPUNIT_ASSERT( a == c );
#endif
#if wxUSE_LONGLONG_NATIVE
wxLongLongNative d(a.GetHi(), a.GetLo());
CPPUNIT_ASSERT( a == d );
#endif
}
}
void LongLongTestCase::Comparison()
{
static const long ls[2] =
{
0x1234,
-0x1234,
};
wxLongLong lls[2];
lls[0] = ls[0];
lls[1] = ls[1];
for ( size_t n = 0; n < WXSIZEOF(testLongs); n++ )
{
for ( size_t m = 0; m < WXSIZEOF(lls); m++ )
{
CPPUNIT_ASSERT( (lls[m] < testLongs[n]) == (ls[m] < testLongs[n]) );
CPPUNIT_ASSERT( (lls[m] > testLongs[n]) == (ls[m] > testLongs[n]) );
CPPUNIT_ASSERT( (lls[m] <= testLongs[n]) == (ls[m] <= testLongs[n]) );
CPPUNIT_ASSERT( (lls[m] >= testLongs[n]) == (ls[m] >= testLongs[n]) );
CPPUNIT_ASSERT( (lls[m] != testLongs[n]) == (ls[m] != testLongs[n]) );
CPPUNIT_ASSERT( (lls[m] == testLongs[n]) == (ls[m] == testLongs[n]) );
}
}
}
void LongLongTestCase::Addition()
{
for ( size_t n = 0; n < ITEMS; n++ )
{
wxLongLong a = RAND_LL();
wxLongLong b = RAND_LL();
wxLongLong c = a + b;
#if wxUSE_LONGLONG_NATIVE
wxLongLongNative a1 = a;
wxLongLongNative b1 = b;
wxLongLongNative c1 = a1 + b1;
CPPUNIT_ASSERT( c == c1 );
#endif
#if wxUSE_LONGLONG_WX
wxLongLongWx a2 = a;
wxLongLongWx b2 = b;
wxLongLongWx c2 = a2 + b2;
CPPUNIT_ASSERT( c == c2 );
#endif
}
}
void LongLongTestCase::Multiplication()
{
for ( size_t n = 0; n < ITEMS; n++ )
{
wxLongLong a = RAND_LL();
wxLongLong b = RAND_LL();
wxLongLong c = a*b;
wxLongLong a1(a.GetHi(), a.GetLo());
wxLongLong b1(b.GetHi(), b.GetLo());
wxLongLong c1 = a1*b1;
CPPUNIT_ASSERT( c1 == c );
#if wxUSE_LONGLONG_WX
wxLongLongWx a2(a.GetHi(), a.GetLo());
wxLongLongWx b2(b.GetHi(), b.GetLo());
wxLongLongWx c2 = a2*b2;
CPPUNIT_ASSERT( c2 == c );
#endif
#if wxUSE_LONGLONG_NATIVE
wxLongLongNative a3(a.GetHi(), a.GetLo());
wxLongLongNative b3(b.GetHi(), b.GetLo());
wxLongLongNative c3 = a3*b3;
CPPUNIT_ASSERT( c3 == c );
#endif
}
}
void LongLongTestCase::Division()
{
for ( size_t n = 0; n < ITEMS; n++ )
{
// get a random wxLongLong (shifting by 12 the MSB ensures that the
// multiplication will not overflow)
wxLongLong a = MAKE_LL((rand() >> 12), rand(), rand(), rand());
// get a random (but non null) long (not wxLongLong for now) divider
long l;
do
{
l = rand();
}
while ( !l );
wxLongLong q = a / l;
wxLongLong r = a % l;
CPPUNIT_ASSERT( a == ( q * l + r ) );
#if wxUSE_LONGLONG_WX
wxLongLongWx a1(a.GetHi(), a.GetLo());
wxLongLongWx q1 = a1 / l;
wxLongLongWx r1 = a1 % l;
CPPUNIT_ASSERT( q == q1 );
CPPUNIT_ASSERT( r == r1 );
CPPUNIT_ASSERT( a1 == ( q1 * l + r1 ) );
#endif
#if wxUSE_LONGLONG_NATIVE
wxLongLongNative a2(a.GetHi(), a.GetLo());
wxLongLongNative q2 = a2 / l;
wxLongLongNative r2 = a2 % l;
CPPUNIT_ASSERT( q == q2 );
CPPUNIT_ASSERT( r == r2 );
CPPUNIT_ASSERT( a2 == ( q2 * l + r2 ) );
#endif
}
}
void LongLongTestCase::BitOperations()
{
for ( size_t n = 0; n < ITEMS; n++ )
{
wxLongLong a = RAND_LL();
for ( size_t n = 0; n < 33; n++ )
{
wxLongLong b(a.GetHi(), a.GetLo()), c, d = b, e;
d >>= n;
c = b >> n;
CPPUNIT_ASSERT( c == d );
d <<= n;
e = c << n;
CPPUNIT_ASSERT( d == e );
#if wxUSE_LONGLONG_WX
wxLongLongWx b1(a.GetHi(), a.GetLo()), c1, d1 = b1, e1;
d1 >>= n;
c1 = b1 >> n;
CPPUNIT_ASSERT( c1 == d1 );
d1 <<= n;
e1 = c1 << n;
CPPUNIT_ASSERT( d1 == e1 );
#endif
#if wxUSE_LONGLONG_NATIVE
wxLongLongNative b2(a.GetHi(), a.GetLo()), c2, d2 = b2, e2;
d2 >>= n;
c2 = b2 >> n;
CPPUNIT_ASSERT( c2 == d2 );
d2 <<= n;
e2 = c2 << n;
CPPUNIT_ASSERT( d2 == e2 );
#endif
}
}
}
void LongLongTestCase::ToString()
{
wxString s1, s2;
for ( size_t n = 0; n < WXSIZEOF(testLongs); n++ )
{
wxLongLong a = testLongs[n];
s1 = wxString::Format(_T("%ld"), testLongs[n]);
s2 = a.ToString();
CPPUNIT_ASSERT( s1 == s2 );
s2 = wxEmptyString;
s2 << a;
CPPUNIT_ASSERT( s1 == s2 );
#if wxUSE_LONGLONG_WX
wxLongLongWx a1 = testLongs[n];
s2 = a1.ToString();
CPPUNIT_ASSERT( s1 == s2 );
#endif
#if wxUSE_LONGLONG_NATIVE
wxLongLongNative a2 = testLongs[n];
s2 = a2.ToString();
CPPUNIT_ASSERT( s1 == s2 );
#endif
}
wxLongLong a(0x12345678, 0x87654321);
CPPUNIT_ASSERT( a.ToString() == _T("1311768467139281697") );
a.Negate();
CPPUNIT_ASSERT( a.ToString() == _T("-1311768467139281697") );
wxLongLong llMin(-2147483647L - 1L, 0);
CPPUNIT_ASSERT( llMin.ToString() == _T("-9223372036854775808") );
#if wxUSE_LONGLONG_WX
wxLongLongWx a1(a.GetHi(), a.GetLo());
CPPUNIT_ASSERT( a1.ToString() == _T("-1311768467139281697") );
a1.Negate();
CPPUNIT_ASSERT( a1.ToString() == _T("1311768467139281697") );
#endif
#if wxUSE_LONGLONG_NATIVE
wxLongLongNative a2(a.GetHi(), a.GetLo());
CPPUNIT_ASSERT( a2.ToString() == _T("-1311768467139281697") );
a2.Negate();
CPPUNIT_ASSERT( a2.ToString() == _T("1311768467139281697") );
#endif
}
#endif // wxUSE_LONGLONG
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