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50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
/*
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* Copyright (C) 2016, Mike Walters <mike@flomp.net>
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*
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* This file is part of inspectrum.
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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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* (at your option) 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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#include "util.h"
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std::string formatSIValue(float value)
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{
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std::map<int, std::string> prefixes = {
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{ 9, "G" },
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{ 6, "M" },
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{ 3, "k" },
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{ 0, "" },
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{ -3, "m" },
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{ -6, "µ" },
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{ -9, "n" },
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};
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int power = 0;
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while (value < 1.0f && power > -9) {
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value *= 1e3;
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power -= 3;
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}
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while (value >= 1e3 && power < 9) {
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value *= 1e-3;
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power += 3;
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}
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std::stringstream ss;
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ss << value << prefixes[power];
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return ss.str();
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}
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template<> const char* getFileNameFilter<std::complex<float>>() { return "complex<float> file (*.fc32)"; };
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template<> const char* getFileNameFilter<float>() { return "float file (*.f32)"; };
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