mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-16 05:11:49 -05:00
40 lines
1.6 KiB
C++
40 lines
1.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2015 Edouard Griffiths, F4EXB //
|
|
// //
|
|
// This program is free software; you can redistribute it and/or modify //
|
|
// it under the terms of the GNU General Public License as published by //
|
|
// the Free Software Foundation as version 3 of the License, or //
|
|
// (at your option) any later version. //
|
|
// //
|
|
// This program is distributed in the hope that it will be useful, //
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
|
// GNU General Public License V3 for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "util/db.h"
|
|
#include <cmath>
|
|
#include <cassert>
|
|
|
|
double CalcDb::dbPower(double magsq, double floor)
|
|
{
|
|
assert(floor > 0.0);
|
|
|
|
if (magsq > floor)
|
|
{
|
|
return 10.0 * log10(magsq);
|
|
}
|
|
else
|
|
{
|
|
return 10.0 * log10(floor);
|
|
}
|
|
}
|
|
|
|
double CalcDb::powerFromdB(double powerdB)
|
|
{
|
|
return pow(10.0, powerdB / 10.0);
|
|
}
|