// ------------------------------- //
// -------- Start of File -------- //
// ------------------------------- //
// ----------------------------------------------------------- //
// C++ Source Code File Name: testprog.cpp
// Compiler Used: MSVC, BCC32, GCC, HPUX aCC, SOLARIS CC
// Produced By: glNET Software
// File Creation Date: 09/05/1997
// Date Last Modified: 05/25/2001
// Copyright (c) 2001 glNET Software
// ----------------------------------------------------------- //
// ------------- Program Description and Details ------------- //
// ----------------------------------------------------------- //
/*
This 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.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
This is a test program for the FLOAT64 class.
*/
// ----------------------------------------------------------- //
#include <iostream.h>
#include <stdio.h>
#include "gxfloat.h"
const __DPFLOAT__ DPFLOATPositiveLimit = 1.7E+308; // (15 digit precision)
const __DPFLOAT__ DPFLOATNegitiveLimit = 1.7E-308; // (15 digit precision)
void PausePrg()
{
cout << endl;
cout << "Press enter to continue..." << endl;
cin.get();
}
void SkipToEol(istream &s)
// Used to clear istream
{
char c;
s.clear();
while(s.get(c) && c != '\n') { ; }
}
void FWrite(char *fname)
{
gxFLOAT64 aa = 3.141592653589793; // Arc cosine of -1 equals pi
cout.precision(15); // Show 15 places after the decimal point
cout.setf(ios::fixed | ios::right); // Normal FP notation right justified
cout << "Writing a gxFLOAT64 value " << aa << " to a file..." << endl;
#ifndef __BCC_BUILDER_40__
// Do not synchronize with stdio under BCC32
ios::sync_with_stdio();
#endif
FILE *stream;
int numwritten;
/* Open file in binary mode: */
if((stream = fopen( fname, "w+b" )) != NULL )
{
numwritten = fwrite((char *)&aa, 1, sizeof(gxFLOAT64), stream );
printf( "Wrote %d items\n", numwritten );
fclose( stream );
}
else
printf( "Problem opening the file\n" );
}
void FRead(char *fname)
{
gxFLOAT64 bb = 0;
#ifndef __BCC_BUILDER_40__
// Do not synchronize with stdio under BCC32
ios::sync_with_stdio();
#endif
FILE *stream;
int numread;
cout.precision(15); // Show 15 places after the decimal point
cout.setf(ios::fixed | ios::right); // Normal FP notation right justified
cout << "Reading back gxFLOAT64 value from the file..." << endl;
if( (stream = fopen( fname, "r+b" )) != NULL )
{
numread = fread((char *)&bb, 1, sizeof(gxFLOAT64), stream );
printf( "Number of items read = %d\n", numread );
fclose( stream );
}
else
printf( "File could not be opened\n" );
cout << "Value read from file = " << bb << endl;
}
template<class TYPEX, class TYPEY>
inline void OperatorTest(TYPEX x, TYPEY y)
{
char *tf[2] = {"FALSE", "TRUE"};
cout << endl;
cout << "Value x = " << x << ", Value y = " << y << endl;
TYPEX z;
cout << x << " += " << y << " = "; z = x; z += y; cout << z << endl;
cout << x << " -= " << y << " = "; z = x; z -= y; cout << z << endl;
cout << x << " *= " << y << " = "; z = x; z *= y; cout << z << endl;
cout << x << " /= " << y << " = "; z = x; z /= y; cout << z << endl;
cout << x << " * " << y << " = " ; z = (x * y); cout << z << endl;
cout << x << " / " << y << " = " ; z = (x / y); cout << z << endl;
cout << x << " + " << y << " = " ; z = (x + y); cout << z << endl;
cout << x << " - " << y << " = " ; z = (x - y); cout << z << endl;
cout << x << " == " << y << " = " << tf[(x == y)] << endl;
cout << x << " != " << y << " = " << tf[(x != y)] << endl;
cout << x << " <= " << y << " = " << tf[(x <= y)] << endl;
cout << x << " >= " << y << " = " << tf[(x >= y)] << endl;
cout << x << " < " << y << " = " << tf[(x < y)] << endl;
cout << x << " > " << y << " = " << tf[(x > y)] << endl;
cout << x << "++ = "; z = x; z++; cout << z << endl;
cout << x << "-- = "; z = x; z--; cout << z << endl;
cout << "++" << x << " = "; z = x; ++z; cout << z << endl;
cout << "--" << x << " = "; z = x; --z; cout << z << endl;
}
int main()
{
gxFLOAT64 a = DPFLOATPositiveLimit;
cout << "gxFLOAT64 positive limit = " << a << endl;
gxFLOAT64 b(DPFLOATNegitiveLimit);
cout << "gxFLOAT64 negitive limit = " << b << endl;
PausePrg();
cout << "Testing gxFLOAT64 copy consturctor..." << endl;
gxFLOAT64 c(a);
cout << c << endl;
cout << endl;
cout << "Testing gxFLOAT64 assignment operator..." << endl;
gxFLOAT64 d;
d = a;
cout << d << endl;
PausePrg();
// Reading and writing a gxFLOAT64 value to a file
char fname[255] = "testf64.out";
FILE *tmp; // Temporary file pointer
tmp = ::fopen(fname, "rb");
if(tmp) FRead(fname); else FWrite(fname);
PausePrg();
cout.precision(10); // Show 10 places after the decimal point
cout.setf(ios::fixed | ios::right); // Normal FP notation right justified
cout << "Testing overloaded operators (gxFLOAT64, gxFLOAT64)..." << endl;
__DPFLOAT__ buf1, buf2, af, bf;
cout << "Enter first floating point value: ";
cin >> buf1;
if(cin) {
a = buf1;
af = buf1;
cout << "Enter second floating point value: ";
cin >> buf2;
}
else {
cout << "Input stream broken. Exiting..." << endl;
return 0;
}
if(cin) {
b = buf2;
bf = buf2;
}
else {
cout << "Input stream broken. Exiting..." << endl;
return 0;
}
SkipToEol(cin);
cout << endl;
OperatorTest(a, b);
PausePrg();
cout << "Testing overloaded operators (gxFLOAT64, __DPFLOAT__)..." << endl;
OperatorTest(a, bf);
PausePrg();
cout << "Testing overloaded operators (__DPFLOAT__, gxFLOAT64)..." << endl;
OperatorTest(af, b);
PausePrg();
cout << "Testing overloaded operators (gxFLOAT64, __LWORD__)..." << endl;
OperatorTest(a, (__LWORD__)bf);
PausePrg();
cout << "Testing overloaded operators (__LWORD__, gxFLOAT64)..." << endl;
OperatorTest((__LWORD__)af, b);
PausePrg();
cout << "Testing overloaded operators (gxFLOAT64, __WORD__)..." << endl;
OperatorTest(a, (__WORD__)bf);
PausePrg();
cout << "Testing overloaded operators (__WORD__, gxFLOAT64)..." << endl;
OperatorTest((__WORD__)af, b);
PausePrg();
cout << "Testing overloaded operators (gxFLOAT64, __SWORD__)..." << endl;
OperatorTest(a, (__SWORD__)bf);
PausePrg();
cout << "Testing overloaded operators (__SWORD__, gxFLOAT64)..." << endl;
OperatorTest((__SWORD__)af, b);
PausePrg();
cout << "Testing overloaded operators (gxFLOAT64, __UWORD__)..." << endl;
OperatorTest(a, (__UWORD__)bf);
PausePrg();
cout << "Testing overloaded operators (__UWORD__, gxFLOAT64)..." << endl;
OperatorTest((__UWORD__)af, b);
PausePrg();
cout << "Testing overloaded operators (gxFLOAT64, __USWORD__)..." << endl;
OperatorTest(a, (__USWORD__)bf);
PausePrg();
cout << "Testing overloaded operators (__USWORD__, gxFLOAT64)..." << endl;
OperatorTest((__USWORD__)af, b);
PausePrg();
cout << "Testing overloaded operators (gxFLOAT64, __SBYTE__)..." << endl;
OperatorTest(a, 'B');
PausePrg();
cout << "Testing overloaded operators (__SBYTE__, gxFLOAT64)..." << endl;
OperatorTest('A', b);
return 0;
}
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