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/***************************************************************************
* Copyright (c) Johan Mabille, Sylvain Corlay and Wolf Vollprecht *
* Copyright (c) QuantStack *
* *
* Distributed under the terms of the BSD 3-Clause License. *
* *
* The full license is in the file LICENSE, distributed with this software. *
****************************************************************************/
#include <complex>
#include <initializer_list>
#include <tuple>
#include <type_traits>
#include "xtensor/xarray.hpp"
#include "xtensor/xfixed.hpp"
#include "xtensor/xshape.hpp"
#include "xtensor/xstrided_view.hpp"
#include "xtensor/xtensor.hpp"
#include "xtensor/xutils.hpp"
#include "xtensor/xview.hpp"
#include "test_common_macros.hpp"
namespace xt
{
using std::size_t;
struct for_each_fn
{
short a;
int b;
float c;
double d;
template <class T>
void operator()(T t)
{
if (std::is_same<T, short>::value)
{
a = static_cast<short>(t);
}
else if (std::is_same<T, int>::value)
{
b = static_cast<int>(t);
}
else if (std::is_same<T, float>::value)
{
c = static_cast<float>(t);
}
else if (std::is_same<T, double>::value)
{
d = static_cast<double>(t);
}
}
};
TEST(utils, for_each)
{
for_each_fn fn;
short a = 1;
int b = 4;
float c = float(1.2);
double d = 2.3;
auto t = std::make_tuple(a, b, c, d);
for_each(fn, t);
ASSERT_TRUE(a == fn.a && b == fn.b && c == fn.c && d == fn.d);
EXPECT_FALSE(noexcept(for_each(fn, t)));
}
TEST(utils, accumulate)
{
auto func = [](int i, int j)
{
return i + j;
};
const std::tuple<int, int, int> t(3, 4, 1);
EXPECT_EQ(8, accumulate(func, 0, t));
EXPECT_FALSE(noexcept(accumulate(func, 0, t)));
auto func_ne = [](int i, int j) noexcept
{
return i + j;
};
EXPECT_EQ(8, accumulate(func_ne, 0, t));
EXPECT_TRUE(noexcept(accumulate(func_ne, 0, t)));
}
template <class... T>
auto foo(const std::tuple<T...>& t)
{
auto func = [](int i)
{
return i;
};
return apply<int>(1, func, t);
}
int fun(int i) noexcept
{
return 2 * i;
}
TEST(utils, apply)
{
ASSERT_TRUE(foo(std::make_tuple(1, 2, 3)) == 2);
EXPECT_FALSE(noexcept(foo(std::make_tuple(1, 2, 3))));
auto func_ne = [](int i) noexcept
{
return i;
};
auto t = std::make_tuple(1, 2, 3);
#if (_MSC_VER >= 1910)
EXPECT_FALSE(noexcept(apply<int>(1, func_ne, t)));
#else
EXPECT_TRUE(noexcept(apply<int>(1, func_ne, t)));
#endif
}
TEST(utils, conditional_cast)
{
EXPECT_TRUE((std::is_same<decltype(conditional_cast<false, double>(1)), int>::value));
EXPECT_TRUE((std::is_same<decltype(conditional_cast<true, double>(1)), double>::value));
}
TEST(utils, has_data_interface)
{
bool b = has_data_interface<xarray<int>>::value;
EXPECT_TRUE(b);
b = has_data_interface<const xarray<int>>::value;
EXPECT_TRUE(b);
b = has_data_interface<const xtensor<double, 2>>::value;
EXPECT_TRUE(b);
b = has_data_interface<const xtensor_fixed<double, xshape<3, 4>>>::value;
EXPECT_TRUE(b);
xarray<int> a = xarray<int>::from_shape({3, 4, 5});
auto f = a + a - 23;
auto v2 = strided_view(a, {all(), 1, all()});
auto vv2 = strided_view(v2, {all(), 2});
auto v3 = strided_view(f, {all(), 2});
b = has_data_interface<decltype(v2)>::value;
EXPECT_TRUE(b);
b = has_data_interface<decltype(vv2)>::value;
EXPECT_TRUE(b);
b = has_data_interface<decltype(v3)>::value;
EXPECT_FALSE(b);
}
TEST(utils, has_storage_type)
{
bool b = has_storage_type<xarray<int>>::value;
EXPECT_TRUE(b);
xarray<int> x, y;
b = has_storage_type<decltype(x + y)>::value;
EXPECT_FALSE(b);
b = has_storage_type<decltype(view(x, all()))>::value;
EXPECT_TRUE(b);
b = has_storage_type<decltype(view(2 * x, all()))>::value;
EXPECT_FALSE(b);
}
TEST(utils, has_strides)
{
bool b = has_strides<xarray<int>>::value;
EXPECT_TRUE(b);
b = has_strides<const xarray<int>>::value;
EXPECT_TRUE(b);
b = has_strides<const xtensor<double, 2>>::value;
EXPECT_TRUE(b);
b = has_strides<const xtensor_fixed<double, xshape<3, 4>>>::value;
EXPECT_TRUE(b);
xarray<int> a = xarray<int>::from_shape({3, 4, 5});
auto f = a + a - 23;
auto v2 = strided_view(a, {all(), 1, all()});
auto vv2 = strided_view(v2, {all(), 2});
auto v3 = strided_view(f, {all(), 2});
b = has_strides<decltype(v2)>::value;
EXPECT_TRUE(b);
b = has_strides<decltype(vv2)>::value;
EXPECT_TRUE(b);
#ifndef _MSC_VER
// TODO fix this test for MSVC 2015!
b = has_strides<decltype(v3)>::value;
EXPECT_TRUE(b);
#endif
}
TEST(utils, has_simd_interface)
{
bool b = has_simd_interface<xarray<int>>::value;
EXPECT_TRUE(b);
b = has_simd_interface<const xarray<int>>::value;
EXPECT_TRUE(b);
b = has_simd_interface<const xtensor<double, 2>>::value;
EXPECT_TRUE(b);
b = has_simd_interface<const xtensor_fixed<double, xshape<3, 4>>>::value;
EXPECT_TRUE(b);
xarray<int> a = xarray<int>::from_shape({3, 4, 5});
auto f = a + a - 23;
auto v2 = strided_view(a, {all(), 1, all()});
auto vv2 = strided_view(v2, {all(), 2});
auto v3 = strided_view(f, {all(), 2});
b = has_simd_interface<decltype(v2)>::value;
EXPECT_FALSE(b);
b = has_simd_interface<decltype(vv2)>::value;
EXPECT_FALSE(b);
b = has_simd_interface<decltype(v3)>::value;
EXPECT_FALSE(b);
auto xv = xt::view(a, 1);
b = has_simd_interface<decltype(xv)>::value;
EXPECT_TRUE(b);
}
TEST(utils, allocation_tracking)
{
using arr_t = xarray<
double,
layout_type::row_major,
tracking_allocator<double, std::allocator<double>, alloc_tracking::policy::assert>>;
arr_t a = {{1, 2, 3}, {5, 6, 7}};
alloc_tracking::enable();
XT_EXPECT_THROW(arr_t b = a + 123, std::runtime_error);
XT_EXPECT_NO_THROW(a.resize({2, 3}));
XT_EXPECT_NO_THROW(a.resize({3, 2}));
XT_EXPECT_THROW(a.resize({3, 15}), std::runtime_error);
alloc_tracking::disable();
XT_EXPECT_NO_THROW(arr_t c = a);
}
TEST(utils, static_dimension)
{
std::ptrdiff_t sdim = static_dimension<std::vector<int>>::value;
EXPECT_EQ(sdim, -1);
sdim = static_dimension<std::array<int, 4>>::value;
EXPECT_EQ(sdim, 4);
sdim = static_dimension<xt::const_array<char, 12>>::value;
EXPECT_EQ(sdim, 12);
sdim = static_dimension<xt::fixed_shape<4, 1, 2, 3>>::value;
EXPECT_EQ(sdim, 4);
sdim = static_dimension<xt::sequence_view<std::array<std::ptrdiff_t, 2>, 1, 2>>::value;
EXPECT_EQ(sdim, 1);
sdim = static_dimension<xt::sequence_view<std::array<std::ptrdiff_t, 2>, 1, -1>>::value;
EXPECT_EQ(sdim, -1);
sdim = static_dimension<xt::sequence_view<xt::fixed_shape<4, 1, 2, 3>, 1, 4>>::value;
EXPECT_EQ(sdim, 3);
}
}
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