[Tensor] Disambiguate undefined Tensor dimensions from Scalar Tensor

See merge request !162

Christophe Guillon authored 8 months ago and Maxence Naud committed 8 months ago

Activate previously commented tests on scalars for
elementwise operators: Test_[Div|Mul|Sub|Pow]_Op.cpp.
Add scalar test for Test_MatMul_Op.cpp.
Add negative scalar tests for Test_[Concat|Transpose]Impl.cpp.
Update implementations forward/forwardDims of operators
Concat|Transpose|MatMul to assert on unexpected scalar inputs.

Christophe Guillon authored 8 months ago and Maxence Naud committed 8 months ago

Define a Tensor with undefined dims by explicitly setting mSize to 0.
Provide undefined() method which must be used instead of empty()
to test whether a Tensor as associated dimensions and can be used
for forwarding dimensions downward.
This disambiguates from defined scalar Tensor which actually have
empty dimensions, but size of 1.
Note that as soon as a Tensor with undefined dimensions is resized,
it's dimensions are permanently defined (though may still change).

This change solves issues in operators forwardDims() when
input values are scalar, i.e. !undefined() and empty().

fix tensorImpl

See merge request !160

Chore_26_compare-layer-import-export-onnx

See merge request !157

Fix softmax binding

See merge request !156

Im2col

See merge request !153

Fix renaming node with no name

See merge request !150

Implement resetConsummerProducer() for meta op

See merge request !151

Improve UI for Operator/Node/GraphView/Tensor

See merge request !145

- Fix datatype call
- Change 'DataType' to 'dtype' for Python interface