mirror of
https://github.com/ra3xdh/qucs_s
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76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*
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* units.h - some conversion definitions
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*
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* Copyright (C) 2001 Gopal Narayanan <gopal@astro.umass.edu>
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* Copyright (C) 2005, 2006 Stefan Jahn <stefan@lkcc.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this package; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef __UNITS_H
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#define __UNITS_H
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#include <cmath>
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static const double pi = 3.1415926535897932384626433832795029; /* pi */
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static const double pi_over_2 = 1.5707963267948966192313216916397514; /* pi/2 */
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static const double e = 2.7182818284590452353602874713526625; /* e */
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static const double MU0 = 12.566370614e-7; /* magnetic constant */
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static const double C0 = 299792458.0; /* speed of light in vacuum */
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static const double ZF0 = 376.73031346958504364963; /* wave resistance in vacuum */
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#ifndef INFINITY
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const double INFINITY = -log (0.0);
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#endif
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static const double NR_EPSI = 2.2204460492503131e-16;
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static const double MAX_ERROR = 0.000001;
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// Types of units.
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#define UNIT_FREQ 0
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#define UNIT_LENGTH 1
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#define UNIT_RES 2
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#define UNIT_ANG 3
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// Frequency units.
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#define FREQ_GHZ 0
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#define FREQ_HZ 1
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#define FREQ_KHZ 2
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#define FREQ_MHZ 3
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// Length units.
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#define LENGTH_MIL 0
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#define LENGTH_CM 1
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#define LENGTH_MM 2
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#define LENGTH_M 3
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#define LENGTH_UM 4
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#define LENGTH_IN 5
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#define LENGTH_FT 6
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// Resistance units.
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#define RES_OHM 0
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#define RES_KOHM 1
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// Angle units.
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#define ANG_DEG 0
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#define ANG_RAD 1
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#endif /* __UNITS_H */
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