40 lines
917 B
C
40 lines
917 B
C
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#include "mix_cc/matheval.h"
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#include <Eigen/Core>
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#include <functional>
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#include <map>
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#include <string>
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namespace mix_cc {
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namespace dataframe {
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namespace detail {
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class inner_exp {
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public:
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void init(std::string& exp_str, int tag_count) {
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this->exp_str = exp_str;
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this->exp_parser.parse(exp_str);
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}
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double calc(const Eigen::Block<Eigen::MatrixXd, 1, -1, false>& row) {
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this->load_row_to_buffer(row);
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return this->calc();
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}
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protected:
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void load_row_to_buffer(
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const Eigen::Block<Eigen::MatrixXd, 1, -1, false>& row) {
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tmp_data["time"] = row(0);
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for (auto i = 1; i < row.size(); i++) {
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tmp_data["tag" + std::to_string(i)] = row(i);
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}
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}
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double calc() { exp_parser.evaluate(tmp_data); }
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std::map<std::string, double> tmp_data;
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std::string exp_str;
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matheval::Parser exp_parser;
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};
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} // namespace detail
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} // namespace dataframe
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} // namespace mix_cc
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