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https://git.rwth-aachen.de/acs/public/villas/node/
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69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
/** Signal data.
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*
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* @file
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* @author Steffen Vogel <post@steffenvogel.de>
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* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
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* @license Apache 2.0
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*********************************************************************************/
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#pragma once
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#include <jansson.h>
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#include <limits>
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#include <complex>
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#include <string>
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#include <cstdint>
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namespace villas {
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namespace node {
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/** A signal value.
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*
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* Data is in host endianess!
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*/
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union SignalData {
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double f; /**< Floating point values. */
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int64_t i; /**< Integer values. */
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bool b; /**< Boolean values. */
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std::complex<float> z; /**< Complex values. */
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SignalData() :
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i(0)
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{ }
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static union SignalData nan()
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{
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union SignalData d;
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d.f = std::numeric_limits<double>::quiet_NaN();
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return d;
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}
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bool is_nan()
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{
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return f == std::numeric_limits<double>::quiet_NaN();
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}
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/** Convert signal data from one description/format to another. */
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SignalData cast(enum SignalType type, enum SignalType to) const;
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/** Set data from double */
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void set(enum SignalType type, double val);
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/** Print value of a signal to a character buffer. */
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int printString(enum SignalType type, char *buf, size_t len, int precision = 5) const;
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int parseString(enum SignalType type, const char *ptr, char **end);
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int parseJson(enum SignalType type, json_t *json);
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json_t * toJson(enum SignalType type) const;
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std::string toString(enum SignalType type, int precision = 5) const;
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};
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} // namespace node
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} // namespace villas
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