43 lines
1005 B
C++
43 lines
1005 B
C++
#pragma once
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#include <cstdlib>
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#include <vector>
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// You can modify the data structure as you want
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struct Tensor {
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// Alloc memory
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Tensor(std::vector<int> shape_) {
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ndim = shape_.size();
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for (int i = 0; i < ndim; i++) { shape[i] = shape_[i]; }
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int n = num_elem();
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buf = (float *) malloc(n * sizeof(float));
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}
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// Alloc memory and copy
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Tensor(std::vector<int> shape_, float *buf_) {
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ndim = shape_.size();
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for (int i = 0; i < ndim; i++) { shape[i] = shape_[i]; }
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int n = num_elem();
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buf = (float *) malloc(n * sizeof(float));
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for (int i = 0; i < n; ++i) { buf[i] = buf_[i]; }
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}
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~Tensor() {
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if (buf != nullptr) free(buf);
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}
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int num_elem() {
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int sz = 1;
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for (int i = 0; i < ndim; i++) sz *= shape[i];
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return sz;
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}
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// Pointer to data
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float *buf = nullptr;
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// Shape of tensor, from outermost dimension to innermost dimension.
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// e.g., {{1.0, -0.5, 2.3}, {4.3, 5.6, -7.8}} => shape = {2, 3}
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int ndim = 0;
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int shape[4];
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};
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