mirror of
https://github.com/JvanKatwijk/qt-dab.git
synced 2025-10-06 00:02:40 +02:00
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
#
|
|
/*
|
|
* Copyright (C) 2015 .. 2024
|
|
* Jan van Katwijk (J.vanKatwijk@gmail.com)
|
|
* Lazy Chair Computing
|
|
*
|
|
* This file is part of Qt-DAB
|
|
*
|
|
* Qt-DAB 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Qt-DAB 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 for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Qt-DAB; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#
|
|
#pragma once
|
|
|
|
#include <math.h>
|
|
#include <complex>
|
|
#include <stdint.h>
|
|
#include <unistd.h>
|
|
#include <limits>
|
|
#include "stdlib.h"
|
|
|
|
using namespace std;
|
|
#include <malloc.h>
|
|
|
|
#ifdef __MINGW32__
|
|
#include "windows.h"
|
|
#else
|
|
#include "alloca.h"
|
|
#endif
|
|
|
|
/*
|
|
*/
|
|
typedef float DSPFLOAT;
|
|
|
|
typedef std::complex<DSPFLOAT> DSPCOMPLEX;
|
|
|
|
#define MINIMUM(x, y) ((x) < (y) ? x : y)
|
|
#define MAXIMUM(x, y) ((x) > (y) ? x : y)
|
|
|
|
// common, simple but useful, functions
|
|
static inline
|
|
bool isIndeterminate (DSPFLOAT x) {
|
|
return x != x;
|
|
}
|
|
|
|
static inline
|
|
bool isInfinite (double x) {
|
|
return x == numeric_limits<DSPFLOAT>::infinity ();
|
|
}
|
|
//
|
|
static inline
|
|
DSPCOMPLEX cmul (DSPCOMPLEX x, float y) {
|
|
return DSPCOMPLEX (real (x) * y, imag (x) * y);
|
|
}
|
|
|
|
static inline
|
|
DSPCOMPLEX cdiv (DSPCOMPLEX x, float y) {
|
|
return DSPCOMPLEX (real (x) / y, imag (x) / y);
|
|
}
|
|
|
|
static inline
|
|
float get_db (DSPFLOAT x) {
|
|
return 20 * log10 ((x + 1) / (float)(256 * 65536));
|
|
}
|