mirror of
https://github.com/LMMS/lmms.git
synced 2026-02-02 10:44:21 -05:00
1ad5ef22d7
Constants: - calculate all in long double so as to improve the accuracy of our pre-calculated constants - add some possibly useful constants: reciprocal of pi, square of pi, and reciprocal of e Math: - new math convenience functions: absMax, absMin
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
/*
|
|
* lmms_constants.h - defines system constants
|
|
*
|
|
* Copyright (c) 2006 Danny McRae <khjklujn/at/users.sourceforge.net>
|
|
*
|
|
* This file is part of LMMS - http://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.
|
|
*
|
|
*/
|
|
|
|
#ifndef LMMS_CONSTANTS_H
|
|
#define LMMS_CONSTANTS_H
|
|
|
|
const long double LD_PI = 3.14159265358979323846264338327950288419716939937510;
|
|
const long double LD_2PI = LD_PI * 2.0;
|
|
const long double LD_PI_2 = LD_PI * 0.5;
|
|
const long double LD_PI_R = 1.0 / LD_PI;
|
|
const long double LD_PI_SQR = LD_PI * LD_PI;
|
|
const long double LD_E = 2.71828182845904523536028747135266249775724709369995;
|
|
const long double LD_E_R = 1.0 / LD_E;
|
|
|
|
const double D_PI = (double) LD_PI;
|
|
const double D_2PI = (double) LD_2PI;
|
|
const double D_PI_2 = (double) LD_PI_2;
|
|
const double D_PI_R = (double) LD_PI_R;
|
|
const double D_PI_SQR = (double) LD_PI_SQR;
|
|
const double D_E = (double) LD_E;
|
|
const double D_E_R = (double) LD_E_R;
|
|
|
|
const float F_PI = (float) LD_PI;
|
|
const float F_2PI = (float) LD_2PI;
|
|
const float F_PI_2 = (float) LD_PI_2;
|
|
const float F_PI_R = (float) LD_PI_R;
|
|
const float F_PI_SQR = (float) LD_PI_SQR;
|
|
const float F_E = (float) LD_E;
|
|
const float F_E_R = (float) LD_E_R;
|
|
|
|
#endif
|