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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 <iostream>
#include "itkArray.h"
#include "itkNumericTraits.h"
int
itkArrayTest(int, char *[])
{
using FloatArrayType = itk::Array<float>;
using DoubleArrayType = itk::Array<double>;
FloatArrayType fa(10);
DoubleArrayType da(10);
/**
* The following section tests the functionality of the Array's
* memory management.
*/
//
// Create an itk::Array which manages its own memory
//
FloatArrayType myOwnBoss;
myOwnBoss.SetSize(5);
myOwnBoss.Fill(2.0 + 1.0f / 3.0f);
myOwnBoss[0] = 2.0f / 3.0f;
myOwnBoss[1] = itk::NumericTraits<float>::max();
myOwnBoss[2] = itk::NumericTraits<float>::min();
myOwnBoss[3] = 1.0f;
//
// Create an itk::Array which does not manage its own memory
//
constexpr unsigned int n = 7;
float buffer[n];
FloatArrayType notMyOwnBoss;
notMyOwnBoss.SetSize(n);
notMyOwnBoss.SetData(buffer, false);
notMyOwnBoss.Fill(4.0);
FloatArrayType notMyOwnBossToo;
notMyOwnBossToo.SetSize(n);
notMyOwnBossToo.SetData(buffer, false);
//
// Copy an itk::Array which manages its own memory
//
FloatArrayType test1;
test1 = myOwnBoss;
std::cout << test1 << std::endl;
//
// Copy an itk::Array which does not manage its own memory
//
FloatArrayType test2;
test2 = notMyOwnBoss;
std::cout << test2 << std::endl;
//
// Testing itk::Array
// which does not manage its own memory copying an itk::Array
// which does.
//
notMyOwnBoss = myOwnBoss;
std::cout << notMyOwnBoss << std::endl;
//
// Calling SetSize with an argument same as the current
// size
//
notMyOwnBossToo.SetSize(notMyOwnBossToo.GetSize());
//
// Calling SetSize with an argument different to the current
// size
//
notMyOwnBossToo.SetSize(notMyOwnBossToo.GetSize() + 1);
notMyOwnBossToo.Fill(6.0);
std::cout << notMyOwnBossToo << std::endl;
// Exercise operator=( VnlVectorType& )
test2 = test1;
// Test the case where we construct an array that points
// to a user allocated buffer where the user wants to
// maintain responsibility for deleting the array.
constexpr size_t testSizeForArraySetDataSameSize = 10;
FloatArrayType objectToCopy(testSizeForArraySetDataSameSize);
auto * data = new float[testSizeForArraySetDataSameSize];
objectToCopy.SetDataSameSize(data); // This implicitly means LetArrayManageMemory=false
// Make a copy of the array which is not managing its own memory.
FloatArrayType copy(objectToCopy);
// DO a double
//
// Create an itk::Array which manages its own memory
//
DoubleArrayType myOwnDouble;
myOwnDouble.SetSize(5);
myOwnDouble.Fill(2.0 + 1.0 / 3.0);
myOwnDouble[0] = 2.0 / 3.0;
myOwnDouble[1] = itk::NumericTraits<double>::max();
myOwnDouble[2] = itk::NumericTraits<double>::min();
myOwnDouble[3] = 1.0;
std::cout << myOwnDouble << std::endl;
delete[] data;
return EXIT_SUCCESS;
}
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