LMMS/plugins/Flanger/Noise.cpp

/*
 * noise.cpp - defination of Noise class.
 *
 * Copyright (c) 2014 David French <dave/dot/french3/at/googlemail/dot/com>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * 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; either
 * version 2 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 for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */

#include "Noise.h"
#include "lmms_math.h"

Noise::Noise()
{
	inv_randmax = 1.0/FAST_RAND_MAX; /* for range of 0 - 1.0 */
}




float Noise::tick()
{
	return (float) ((2.0 * fast_rand() * inv_randmax) - 1.0);
}