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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 "itkMath.h"
#include <iostream>
#define RoundTestHelperMacro(rndname, input, output) \
if (rndname((input)) != (output)) \
{ \
std::cout << "Failure! " << #rndname << '(' << static_cast<int>(input) << ") expected " \
<< static_cast<int>(output) << " but got " << static_cast<int>(rndname((input))) << std::endl; \
ok = false; \
} \
ITK_MACROEND_NOOP_STATEMENT
namespace
{
template <typename T>
bool
TemplatedRoundTest()
{
bool ok = true;
constexpr unsigned int numberOfElements = 15;
// input data for rounding methods
float input[] = { -8.4999f, -8.50f, -8.5001f, 8.4999f, 8.50f, 8.5001f, -9.4999f, -9.50f,
-9.5001f, 9.4999f, 9.50f, 9.5001f, -0.4999f, -.50f, -.5001f };
T roundOutput[] = { -8, -8, -9, 8, 9, 9, -9, -9, -10, 9, 10, 10, 0, 0, -1 };
T halftoevenOutput[] = { -8, -8, -9, 8, 8, 9, -9, -10, -10, 9, 10, 10, 0, 0, -1 };
T * halfupOutput = roundOutput;
////////
// input data for floor and ceil methods
float fcinput[] = { 8.0f, 8.9999f, 8.0001f, -8.0f, -8.9999f, -8.0001f, 9.0f, 9.9999f,
9.0001f, -9.0f, -9.9999f, -9.0001f, -1.0f, -0.9999f, -1.0001f };
T floorOutput[] = { 8, 8, 8, -8, -9, -9, 9, 9, 9, -9, -10, -10, -1, -1, -2 };
T ceilOutput[] = { 8, 9, 9, -8, -8, -8, 9, 10, 10, -9, -9, -9, -1, 0, -1 };
// Round
for (unsigned int i = 0; i < numberOfElements; ++i)
{
RoundTestHelperMacro(itk::Math::Round<T>, static_cast<float>(input[i]), roundOutput[i]);
RoundTestHelperMacro(itk::Math::Round<T>, static_cast<double>(input[i]), roundOutput[i]);
}
// RoundHalfIntegerToEven
for (unsigned int i = 0; i < numberOfElements; ++i)
{
RoundTestHelperMacro(itk::Math::RoundHalfIntegerToEven<T>, static_cast<float>(input[i]), halftoevenOutput[i]);
RoundTestHelperMacro(itk::Math::RoundHalfIntegerToEven<T>, static_cast<double>(input[i]), halftoevenOutput[i]);
}
// RoundHalfIntegerUp
for (unsigned int i = 0; i < numberOfElements; ++i)
{
RoundTestHelperMacro(itk::Math::RoundHalfIntegerUp<T>, static_cast<float>(input[i]), halfupOutput[i]);
RoundTestHelperMacro(itk::Math::RoundHalfIntegerUp<T>, static_cast<double>(input[i]), halfupOutput[i]);
}
// Floor
for (unsigned int i = 0; i < numberOfElements; ++i)
{
RoundTestHelperMacro(itk::Math::Floor<T>, static_cast<float>(fcinput[i]), floorOutput[i]);
RoundTestHelperMacro(itk::Math::Floor<T>, static_cast<double>(fcinput[i]), floorOutput[i]);
}
// Ceil
for (unsigned int i = 0; i < numberOfElements; ++i)
{
RoundTestHelperMacro(itk::Math::Ceil<T>, static_cast<float>(fcinput[i]), ceilOutput[i]);
RoundTestHelperMacro(itk::Math::Ceil<T>, static_cast<double>(fcinput[i]), ceilOutput[i]);
}
return ok;
}
} // namespace
int
itkMathRoundTest2(int, char *[])
{
bool ok = true;
std::cout << "Testing char type" << std::endl;
ok &= TemplatedRoundTest<signed char>();
std::cout << "Testing short type" << std::endl;
ok &= TemplatedRoundTest<short>();
std::cout << "Testing int type" << std::endl;
ok &= TemplatedRoundTest<int>();
std::cout << "Testing long type" << std::endl;
ok &= TemplatedRoundTest<long>();
std::cout << "Testing vxl_int_64 type" << std::endl;
ok &= TemplatedRoundTest<vxl_int_64>();
if (!ok)
{
return EXIT_FAILURE;
}
else
{
std::cout << "Test passed" << std::endl;
return EXIT_SUCCESS;
}
}
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