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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkMath.h"
#include <iostream>
#include <iostream>
#include "itkMath.h"
namespace
{
// we validate the results against just converting the numbers to
// doubles. This will work for all integers less then 32-bit but is
// not always exact with larger integers.
template < typename T1, typename T2 >
bool DoCastWithRangeCheckTestVerify( const T2 value, const T1 = 0 )
{
T1 ret;
// tying to convert T2 to T1
try
{
ret = itk::Math::CastWithRangeCheck<T1>( value );
// value should match
if ( itk::Math::NotExactlyEquals(double(ret), double(value)) )
{
std::cout << "casting error with input value: "
<< static_cast<typename itk::NumericTraits<T2>::PrintType>(value)
<< " output value: "
<< static_cast<typename itk::NumericTraits<T1>::PrintType>(ret) << std::endl;
return false;
}
}
catch(...)
{
// conversion should result in some overflow problem
T1 retCheck = static_cast<T1>( value );
if ( itk::Math::ExactlyEquals(double(retCheck), double(value)) )
{
std::cout << "unexpected exception with value: " << value << std::endl;
return false;
}
}
return true;
}
template < typename T1, typename T2 >
bool DoCastWithRangeCheckTestExulstive( const T1* = 0, const T2* = 0 )
{
// test convert T2 to T1
bool pass = true;
for (T2 i = itk::NumericTraits<T2>::NonpositiveMin(); i != itk::NumericTraits<T2>::max(); ++i )
{
pass &= DoCastWithRangeCheckTestVerify<T1, T2>( i );
}
return pass;
}
template < typename T1, typename T2 >
bool DoCastWithRangeCheckTest( const T1* = 0, const T2* = 0 )
{
int minus_one = -1;
// test convert T2 to T1
bool pass = true;
pass &= DoCastWithRangeCheckTestVerify<T1, T2>( itk::NumericTraits<T2>::NonpositiveMin() );
pass &= DoCastWithRangeCheckTestVerify<T1, T2>( itk::NumericTraits<T2>::max() );
pass &= DoCastWithRangeCheckTestVerify<T1, T2>( itk::NumericTraits<T2>::ZeroValue() );
pass &= DoCastWithRangeCheckTestVerify<T1, T2>( itk::NumericTraits<T2>::OneValue() );
pass &= DoCastWithRangeCheckTestVerify<T1, T2>( static_cast<T2>(itk::NumericTraits<T2>::OneValue()*minus_one) );
return pass;
}
template < typename T1 >
bool DoCastWithRangeCheckTestForTypes( const T1* = 0 )
{
// call method for all type to be converted to type T1
bool pass = true;
pass &= DoCastWithRangeCheckTest<T1, unsigned char>();
pass &= DoCastWithRangeCheckTest<T1, signed char>();
pass &= DoCastWithRangeCheckTest<T1, unsigned short>();
pass &= DoCastWithRangeCheckTest<T1, signed short>();
pass &= DoCastWithRangeCheckTest<T1, unsigned int>();
pass &= DoCastWithRangeCheckTest<T1, signed int>();
pass &= DoCastWithRangeCheckTest<T1, unsigned long>();
pass &= DoCastWithRangeCheckTest<T1, signed long>();
#ifdef ITK_USE_LONG_LONG
pass &= DoCastWithRangeCheckTest<T1, unsigned long long>();
pass &= DoCastWithRangeCheckTest<T1, signed long long>();
#endif
return pass;
}
} // end namespace
int itkMathCastWithRangeCheckTest( int, char *[] )
{
bool pass = true;
try
{
itk::Math::CastWithRangeCheck<short, int>( int(itk::NumericTraits<short>::max())+10 );
pass = false;
std::cout << "failed to through exception with " << int(itk::NumericTraits<short>::max())+10 << " to int ";
}
catch( ... )
{
std::cout << "caught exception as expected" << std::endl;
}
DoCastWithRangeCheckTestExulstive<signed char, unsigned char>();
DoCastWithRangeCheckTestExulstive<unsigned char, signed char>();
DoCastWithRangeCheckTestExulstive<unsigned char, signed short>();
DoCastWithRangeCheckTestExulstive<signed char, signed short>();
DoCastWithRangeCheckTestExulstive<unsigned int, signed char>();
pass &= DoCastWithRangeCheckTestForTypes<unsigned char>();
pass &= DoCastWithRangeCheckTestForTypes<signed char>();
pass &= DoCastWithRangeCheckTestForTypes<unsigned short>();
pass &= DoCastWithRangeCheckTestForTypes<signed short>();
pass &= DoCastWithRangeCheckTestForTypes<unsigned int>();
pass &= DoCastWithRangeCheckTestForTypes<signed int>();
pass &= DoCastWithRangeCheckTestForTypes<unsigned long>();
pass &= DoCastWithRangeCheckTestForTypes<signed long>();
#ifdef ITK_USE_LONG_LONG
pass &= DoCastWithRangeCheckTestForTypes<unsigned long long>();
pass &= DoCastWithRangeCheckTestForTypes<signed long long>();
#endif
if (pass)
return EXIT_SUCCESS;
else
return EXIT_FAILURE;
}
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