xtensor/test/test_xutils.cpp at master · xtensor-stack/xtensor · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

/***************************************************************************

* 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/containers/xarray.hpp"

#include "xtensor/containers/xfixed.hpp"

#include "xtensor/containers/xtensor.hpp"

#include "xtensor/core/xshape.hpp"

#include "xtensor/utils/xutils.hpp"

#include "xtensor/views/xstrided_view.hpp"

#include "xtensor/views/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)));

const std::tuple<> t_empty{};

EXPECT_EQ(8, accumulate(func_ne, 8, t_empty));

}

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);

static_assert(!noexcept(foo(std::make_tuple(1, 2, 3))));

auto func_ne = [](int i) noexcept

{

return i;

};

auto t = std::make_tuple(1, 2, 3);

static_assert(noexcept(apply<int>(1, func_ne, t)));

}

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)

{

static_assert(data_interface_expression<xarray<int>>);

static_assert(data_interface_expression<const xarray<int>>);

static_assert(data_interface_expression<const xtensor<double, 2>>);

static_assert(data_interface_expression<const xtensor_fixed<double, xshape<3, 4>>>);

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});

static_assert(data_interface_expression<decltype(v2)>);

static_assert(data_interface_expression<decltype(vv2)>);

static_assert(!data_interface_expression<decltype(v3)>);

}

TEST(utils, has_storage_type)

{

static_assert(container_expression<xarray<int>>);

xarray<int> x, y;

static_assert(!container_expression<decltype(x + y)>);

static_assert(container_expression<decltype(view(x, all()))>);

static_assert(!container_expression<decltype(view(2 * x, all()))>);

}

TEST(utils, has_strides)

{

static_assert(strided_expression<xarray<int>>);

static_assert(strided_expression<const xarray<int>>);

static_assert(strided_expression<const xtensor<double, 2>>);

static_assert(strided_expression<const xtensor_fixed<double, xshape<3, 4>>>);

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});

static_assert(strided_expression<decltype(v2)>);

static_assert(strided_expression<decltype(vv2)>);

#ifndef _MSC_VER

// TODO fix this test for MSVC 2015!

static_assert(strided_expression<decltype(v3)>);

#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);

}

xtensor/test/test_xutils.cpp at master · xtensor-stack/xtensor · GitHub

Repository navigation

Expand file tree

Breadcrumbs

test_xutils.cpp

Latest commit

History

Breadcrumbs

test_xutils.cpp

File metadata and controls