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xtensor/test/test_xtensor_semantic.cpp at master · xtensor-stack/xtensor · GitHub
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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
"
xtensor/containers/xarray.hpp
"
#
include
"
xtensor/containers/xtensor.hpp
"
#
include
"
test_common.hpp
"
#
include
"
test_common_macros.hpp
"
namespace
xt
{
using
array_type = xarray<
double
>;
using
tensor_type = xtensor<
double
,
2
>;
using
array_shape = array_type::shape_type;
using
tensor_shape = tensor_type::shape_type;
TEST
(xtensor_semantic, tensor_plus_tensor)
{
tensor_shape s = {
3
,
2
};
tensor_type
t1
(s,
3.2
);
tensor_type
t2
(s,
2.5
);
tensor_type res = t1 + t2;
EXPECT_EQ
(
res
(
0
,
0
),
t1
(
0
,
0
) +
t2
(
0
,
0
));
}
TEST
(xtensor_semantic, tensor_plus_array)
{
tensor_shape s1 = {
3
,
2
};
tensor_type
t1
(s1,
3.2
);
array_shape s2 = {
3
,
2
};
array_type
t2
(s2,
2.5
);
tensor_type res = t1 + t2;
EXPECT_EQ
(
res
(
0
,
0
),
t1
(
0
,
0
) +
t2
(
0
,
0
));
}
TEST
(xtensor_semantic, array_plus_tensor)
{
tensor_shape s1 = {
3
,
2
};
tensor_type
t1
(s1,
3.2
);
array_shape s2 = {
3
,
2
};
array_type
t2
(s2,
2.5
);
array_type res = t1 + t2;
EXPECT_EQ
(
res
(
0
,
0
),
t1
(
0
,
0
) +
t2
(
0
,
0
));
}
TEST
(xtensor_semantic, tensor_cast)
{
using
int8_tensor = xtensor<
int8_t
,
2
>;
using
int32_tensor = xtensor<
int32_t
,
2
>;
using
double_tensor = xtensor<
double
,
2
>;
int8_tensor i8t = {{
int8_t
(
0
),
int8_t
(
1
)}, {
int8_t
(
2
),
int8_t
(
3
)}, {
int8_t
(
4
),
int8_t
(
5
)}};
int32_tensor i32t = {{
int32_t
(
0
),
int32_t
(
1
)}, {
int8_t
(
2
),
int8_t
(
3
)}, {
int8_t
(
4
),
int8_t
(
5
)}};
double_tensor dt = {{
0
.,
1
.}, {
2
.,
3
.}, {
4
.,
5
.}};
int32_tensor i32res = i8t;
EXPECT_EQ
(i32res, i32t);
double_tensor dres = i32t;
EXPECT_EQ
(dres, dt);
}
TEST
(xtensor_semantic, broadcasting_single_element)
{
xtensor<
int
,
2
> t = xt::zeros<
int
>({
1
,
1
});
EXPECT_EQ
(t.
backstrides
().
size
(),
2u
);
EXPECT_EQ
(t.
backstrides
()[
0
],
0u
);
EXPECT_EQ
(t.
backstrides
()[
1
],
0u
);
}
}
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