AthExTriton/src/EvaluateUtils.h

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// Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
 
#ifndef ATHEXTRITON_EVALUATEUTILS_H
#define ATHEXTRITON_EVALUATEUTILS_H
 
#include <format>
#include <string>
#include <vector>
 
namespace EvaluateUtils {
//*******************************************************************
// for reading MNIST images
std::vector<std::vector<std::vector<float>>> read_mnist_pixel_notFlat(
    const std::string& full_path);
 
// flatten a vector of vectors into a vector
std::vector<float> flattenNestedVectors(
    const std::vector<std::vector<float>>& nestedVector);
    inline auto spanToString = [](std::span<const float> s) {
      std::string out;
      for (float v : s) out += std::format("{:.2e} ", v);
      if (!out.empty()) out.pop_back();
      return out;
     };
}  // namespace EvaluateUtils
 
#endif  // ATHEXTRITON_EVALUATEUTILS_H