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// Copyright (c) ONNX Project Contributors
//
// SPDX-License-Identifier: Apache-2.0
// Helper Methods for Adapters
#include "onnx/version_converter/helper.h"
#include <vector>
namespace ONNX_NAMESPACE {
namespace version_conversion {
int check_numpy_unibroadcastable_and_require_broadcast(
const std::vector<Dimension>& input1_sizes,
const std::vector<Dimension>& input2_sizes) {
// Check that input1 is larger
if (input1_sizes.size() < input2_sizes.size())
return -1;
// Check that axis is input1_sizes.size()-input2_sizes.size()
bool broadcast = false;
int axis = (int)(input1_sizes.size() - input2_sizes.size());
for (int i = 0; i < (int)input2_sizes.size(); i++) {
if (input2_sizes[i].dim != input1_sizes[axis + i].dim && input2_sizes[i].dim != 1)
return -1;
if (input2_sizes[i].dim != input1_sizes[axis + i].dim)
broadcast = true;
}
// Return true if broadcasting is required
if (input1_sizes.size() > input2_sizes.size() || broadcast)
return 1;
else
return 0;
}
void assert_numpy_multibroadcastable(
const std::vector<Dimension>& input1_sizes,
const std::vector<Dimension>& input2_sizes) {
// Generalize above for multibroadcastable case
const std::vector<Dimension>* A_ptr;
const std::vector<Dimension>* B_ptr;
int A;
int B;
if (input1_sizes.size() < input2_sizes.size()) {
A_ptr = &input2_sizes;
B_ptr = &input1_sizes;
A = 2;
B = 1;
} else {
A_ptr = &input1_sizes;
B_ptr = &input2_sizes;
A = 1;
B = 2;
}
const std::vector<Dimension>& A_sizes = *A_ptr;
const std::vector<Dimension>& B_sizes = *B_ptr;
int axis = (int)(A_sizes.size() - B_sizes.size());
for (int i = 0; i < (int)B_sizes.size(); i++) {
ONNX_ASSERTM(
B_sizes[i].dim == A_sizes[axis + i].dim || B_sizes[i].dim == 1 || A_sizes[axis + i].dim == 1,
"Dimension %d of input %d does not match "
"dimension %d of input %d, and neither's value is 1",
i,
B,
axis + i,
A);
}
}
void assertNotParams(const std::vector<Dimension>& sizes) {
for (const Dimension& dim : sizes) {
ONNX_ASSERTM(dim.is_int, "%s Dimension is a param instead of an int.", dim.param.c_str());
}
}
void assertInputsAvailable(const ArrayRef<Value*>& inputs, const char* name, uint64_t num_inputs) {
ONNX_ASSERTM(
inputs.size() == num_inputs,
"%s in opset version 6 can only broadcast"
" between %d inputs",
name,
num_inputs);
for (int i = 0; i < (int)num_inputs; i++) {
ONNX_ASSERTM(inputs[i]->has_sizes(), "Shape of input %d is not available.", num_inputs);
assertNotParams(inputs[i]->sizes());
}
}
} // namespace version_conversion
} // namespace ONNX_NAMESPACE
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