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29 lines
774 B
C++
29 lines
774 B
C++
3 years ago
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#include "stmdsp.hpp"
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#include "exprtk.hpp"
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#include <algorithm>
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#include <string_view>
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#include <vector>
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std::vector<stmdsp::dacsample_t> deviceGenLoadFormulaEval(const std::string_view formulaString)
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{
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double x = 0;
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exprtk::symbol_table<double> symbol_table;
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exprtk::expression<double> expression;
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exprtk::parser<double> parser;
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symbol_table.add_variable("x", x);
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symbol_table.add_constants();
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expression.register_symbol_table(symbol_table);
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parser.compile(std::string(formulaString), expression);
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std::vector<stmdsp::dacsample_t> samples (stmdsp::SAMPLES_MAX);
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std::generate(samples.begin(), samples.end(),
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[&] { ++x; return static_cast<stmdsp::dacsample_t>(expression.value()); });
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return samples;
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}
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