SDRAngel
4.11.5
Developer docs for <a href="https://github.com/f4exb/sdrangel">SDRangel<\a>, an Open Source Qt5 / OpenGL 3.0+ SDR and signal analyzer frontend to various hardware.
sdrbase
util
db.cpp
Go to the documentation of this file.
1
// Copyright (C) 2015 Edouard Griffiths, F4EXB //
3
// //
4
// This program is free software; you can redistribute it and/or modify //
5
// it under the terms of the GNU General Public License as published by //
6
// the Free Software Foundation as version 3 of the License, or //
7
// (at your option) any later version. //
8
// //
9
// This program is distributed in the hope that it will be useful, //
10
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
11
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
12
// GNU General Public License V3 for more details. //
13
// //
14
// You should have received a copy of the GNU General Public License //
15
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
17
18
#include "
util/db.h
"
19
#include <cmath>
20
#include <cassert>
21
22
double
CalcDb::dbPower
(
double
magsq,
double
floor
)
23
{
24
assert(floor > 0.0);
25
26
if
(magsq > floor)
27
{
28
return
10.0 * log10(magsq);
29
}
30
else
31
{
32
return
10.0 * log10(floor);
33
}
34
}
35
36
double
CalcDb::powerFromdB
(
double
powerdB)
37
{
38
return
pow(10.0, powerdB / 10.0);
39
}
CalcDb::dbPower
static double dbPower(double magsq, double floor=1e-12)
Definition:
db.cpp:22
floor
Fixed< IntType, IntBits > floor(Fixed< IntType, IntBits > const &x)
Definition:
fixed.h:2301
db.h
CalcDb::powerFromdB
static double powerFromdB(double powerdB)
Definition:
db.cpp:36
Generated on Fri Aug 2 2019 17:56:33 for SDRAngel by
1.8.13