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https://git.rwth-aachen.de/acs/public/villas/node/
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84 lines
2.2 KiB
C++
84 lines
2.2 KiB
C++
/** Signal data.
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*
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* @file
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2021, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASnode
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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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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