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15 lines
384 B
C++
15 lines
384 B
C++
struct pad {
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Index size() const { return out_size; }
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Index operator[](Index i) const {
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return std::max<Index>(0, i - (out_size - in_size));
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}
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Index in_size, out_size;
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};
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Matrix3i A;
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A.reshaped() = VectorXi::LinSpaced(9, 1, 9);
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cout << "Initial matrix A:\n" << A << "\n\n";
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MatrixXi B(5, 5);
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B = A(pad{3, 5}, pad{3, 5});
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cout << "A(pad{3,N}, pad{3,N}):\n" << B << "\n\n";
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