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/*******************************************************
* Copyright (c) 2015, ArrayFire
* All rights reserved.
*
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
********************************************************/
#include <gtest/gtest.h>
#include <arrayfire.h>
#include <af/dim4.hpp>
#include <af/traits.hpp>
#include <string>
#include <vector>
#include <ctime>
#include <iostream>
#include <algorithm>
#include <testHelpers.hpp>
using namespace std;
using namespace af;
template<typename T>
class StandardDev : public ::testing::Test
{
public:
virtual void SetUp() {}
};
// create a list of types to be tested
typedef ::testing::Types<float, double, int, uint, intl, uintl, char, uchar> TestTypes;
// register the type list
TYPED_TEST_CASE(StandardDev, TestTypes);
template<typename T>
struct f32HelperType {
typedef typename cond_type<is_same_type<T, double>::value,
double,
float>::type type;
};
template<typename T>
struct c32HelperType {
typedef typename cond_type<is_same_type<T, cfloat>::value,
cfloat,
typename f32HelperType<T>::type >::type type;
};
template<typename T>
struct elseType {
typedef typename cond_type< is_same_type<T, uintl>::value ||
is_same_type<T, intl> ::value,
double,
T>::type type;
};
template<typename T>
struct sdOutType {
typedef typename cond_type< is_same_type<T, float> ::value ||
is_same_type<T, int> ::value ||
is_same_type<T, uint> ::value ||
is_same_type<T, uchar> ::value ||
is_same_type<T, short> ::value ||
is_same_type<T, ushort> ::value ||
is_same_type<T, char> ::value,
float,
typename elseType<T>::type>::type type;
};
template<typename T>
void stdevDimTest(string pFileName, dim_t dim=-1)
{
typedef typename sdOutType<T>::type outType;
if (noDoubleTests<T>()) return;
if (noDoubleTests<outType>()) return;
vector<af::dim4> numDims;
vector<vector<int> > in;
vector<vector<float> > tests;
readTestsFromFile<int,float>(pFileName, numDims, in, tests);
af::dim4 dims = numDims[0];
vector<T> input(in[0].begin(), in[0].end());
af::array a(dims, &(input.front()));
af::array b = stdev(a, dim);
vector<outType> currGoldBar(tests[0].begin(), tests[0].end());
size_t nElems = currGoldBar.size();
outType *outData = new outType[nElems];
b.host((void*)outData);
for (size_t elIter=0; elIter<nElems; ++elIter) {
ASSERT_NEAR(::real(currGoldBar[elIter]), ::real(outData[elIter]), 1.0e-3)<< "at: " << elIter<< std::endl;
ASSERT_NEAR(::imag(currGoldBar[elIter]), ::imag(outData[elIter]), 1.0e-3)<< "at: " << elIter<< std::endl;
}
// cleanup
delete[] outData;
}
TYPED_TEST(StandardDev, Dim0)
{
stdevDimTest<TypeParam>(string(TEST_DIR "/stdev/mat_10x10_dim0.test"), 0);
}
TYPED_TEST(StandardDev, Dim1)
{
stdevDimTest<TypeParam>(string(TEST_DIR "/stdev/mat_10x10_dim1.test"), 1);
}
TYPED_TEST(StandardDev, Dim2)
{
stdevDimTest<TypeParam>(string(TEST_DIR "/stdev/hypercube_10x10x5x5_dim2.test"), 2);
}
TYPED_TEST(StandardDev, Dim3)
{
stdevDimTest<TypeParam>(string(TEST_DIR "/stdev/hypercube_10x10x5x5_dim3.test"), 3);
}
TEST(StandardDev, InvalidDim)
{
ASSERT_THROW(af::stdev(af::array(), 5), af::exception);
}
TEST(StandardDev, InvalidType)
{
ASSERT_THROW(af::stdev(constant(cdouble(1.0, -1.0), 10)), af::exception);
}
template<typename T>
void stdevDimIndexTest(string pFileName, dim_t dim=-1)
{
typedef typename sdOutType<T>::type outType;
if (noDoubleTests<T>()) return;
if (noDoubleTests<outType>()) return;
vector<af::dim4> numDims;
vector<vector<int> > in;
vector<vector<float> > tests;
readTestsFromFile<int,float>(pFileName, numDims, in, tests);
af::dim4 dims = numDims[0];
vector<T> input(in[0].begin(), in[0].end());
af::array a(dims, &(input.front()));
af::array b = a(seq(2,6), seq(1,7));
af::array c = stdev(b, dim);
vector<outType> currGoldBar(tests[0].begin(), tests[0].end());
size_t nElems = currGoldBar.size();
outType *outData = new outType[nElems];
c.host((void*)outData);
for (size_t elIter=0; elIter<nElems; ++elIter) {
ASSERT_NEAR(::real(currGoldBar[elIter]), ::real(outData[elIter]), 1.0e-3)<< "at: " << elIter<< std::endl;
ASSERT_NEAR(::imag(currGoldBar[elIter]), ::imag(outData[elIter]), 1.0e-3)<< "at: " << elIter<< std::endl;
}
// cleanup
delete[] outData;
}
TYPED_TEST(StandardDev, IndexedArrayDim0)
{
stdevDimIndexTest<TypeParam>(string(TEST_DIR "/stdev/mat_10x10_seq2_6x1_7_dim0.test"), 0);
}
TYPED_TEST(StandardDev, IndexedArrayDim1)
{
stdevDimIndexTest<TypeParam>(string(TEST_DIR "/stdev/mat_10x10_seq2_6x1_7_dim1.test"), 1);
}
TYPED_TEST(StandardDev, All)
{
typedef typename sdOutType<TypeParam>::type outType;
if (noDoubleTests<TypeParam>()) return;
if (noDoubleTests<outType>()) return;
vector<af::dim4> numDims;
vector<vector<int> > in;
vector<vector<float> > tests;
readTestsFromFile<int,float>(string(TEST_DIR "/stdev/mat_10x10_scalar.test"),
numDims, in, tests);
af::dim4 dims = numDims[0];
vector<TypeParam> input(in[0].begin(), in[0].end());
af::array a(dims, &(input.front()));
outType b = stdev<outType>(a);
vector<outType> currGoldBar(tests[0].begin(), tests[0].end());
ASSERT_NEAR(::real(currGoldBar[0]), ::real(b), 1.0e-3);
ASSERT_NEAR(::imag(currGoldBar[0]), ::imag(b), 1.0e-3);
}
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