Constants.h

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#ifndef SimTK_SimTKCOMMON_CONSTANTS_H_
#define SimTK_SimTKCOMMON_CONSTANTS_H_

/* -------------------------------------------------------------------------- *
 *                       Simbody(tm): SimTKcommon                             *
 * -------------------------------------------------------------------------- *
 * This is part of the SimTK biosimulation toolkit originating from           *
 * Simbios, the NIH National Center for Physics-Based Simulation of           *
 * Biological Structures at Stanford, funded under the NIH Roadmap for        *
 * Medical Research, grant U54 GM072970. See https://simtk.org/home/simbody.  *
 *                                                                            *
 * Portions copyright (c) 2006-12 Stanford University and the Authors.        *
 * Authors: Michael Sherman                                                   *
 * Contributors:                                                              *
 *                                                                            *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may    *
 * not use this file except in compliance with the License. You may obtain a  *
 * copy of the License at http://www.apache.org/licenses/LICENSE-2.0.         *
 *                                                                            *
 * Unless required by applicable law or agreed to in writing, software        *
 * distributed under the License is distributed on an "AS IS" BASIS,          *
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   *
 * See the License for the specific language governing permissions and        *
 * limitations under the License.                                             *
 * -------------------------------------------------------------------------- */

    /**************************/
    /* MATHEMATICAL CONSTANTS */
    /**************************/

#define SimTK_PI     3.141592653589793238462643383279502884197169399375105820974944592L

#define SimTK_E      2.718281828459045235360287471352662497757247093699959574966967628L

#define SimTK_LN2    6.931471805599453094172321214581765680755001343602552541206800095e-1L

#define SimTK_LN10   2.302585092994045684017991454684364207601101488628772976033327901L

#define SimTK_LOG2E  1.442695040888963407359924681001892137426645954152985934135449407L

#define SimTK_LOG10E 4.342944819032518276511289189166050822943970058036665661144537832e-1L

#define SimTK_SQRT2  1.414213562373095048801688724209698078569671875376948073176679738L

#define SimTK_OOSQRT2 .7071067811865475244008443621048490392848359376884740365883398690L

#define SimTK_CBRT2  1.259921049894873164767210607278228350570251464701507980081975112L

#define SimTK_OOCBRT2 .7937005259840997373758528196361541301957466639499265049041428810L

#define SimTK_SIXRT2 1.122462048309372981433533049679179516232411110613986753440409546L

#define SimTK_OOSIXRT2 .8908987181403393047402262055905125079872126158781604033837569922L

#define SimTK_SQRT3  1.732050807568877293527446341505872366942805253810380628055806979L

#define SimTK_CBRT3  1.442249570307408382321638310780109588391869253499350577546416195L

    /*end of Mathematical Constants*/

    /**********************/
    /* PHYSICAL CONSTANTS */
    /**********************/

#define SimTK_AVOGADROS_NUMBER 6.0221415e23L

#define SimTK_MASS_OF_PROTON_IN_MD 1.00727646688L

#define SimTK_MASS_OF_NEUTRON_IN_MD 1.00866491560L

#define SimTK_MASS_OF_ELECTRON_IN_MD 5.4857990945e-4L

#define SimTK_CHARGE_OF_PROTON_IN_SI 1.60217653e-19L

#define SimTK_CHARGE_OF_PROTON_IN_MD 1.L

#define SimTK_MOLAR_CHARGE_IN_SI 9.6485338e+4L

#define SimTK_MOLAR_CHARGE_IN_MD SimTK_AVOGADROS_NUMBER

#define SimTK_LIGHTSPEED_IN_SI 2.99792458e+8L

#define SimTK_LIGHTSPEED_IN_MD 2.99792458e+5L

#define SimTK_GRAVITATIONAL_CONSTANT_IN_SI 6.6742e-11L   

#define SimTK_GRAVITATIONAL_CONSTANT_IN_MD 1.10827e-34L

#define SimTK_MAGNETIC_PERMEABILITY_IN_SI  \
    1.256637061435917295385057353311801153678867759750042328389977837e-6L

#define SimTK_MAGNETIC_PERMEABILITY_IN_MD   1.94259179e-8L

#define SimTK_ELECTRIC_PERMITTIVITY_IN_SI  \
    8.854187817620389850536563031710750260608370166599449808102417149e-12L  /* approx of exact */

#define SimTK_ELECTRIC_PERMITTIVITY_IN_MD 5.7276575e-4L

#define SimTK_COULOMB_CONSTANT_IN_SI 8.9875517873681764e+9L

#define SimTK_COULOMB_CONSTANT_IN_MD 1.38935456e+2L

#define SimTK_COULOMB_CONSTANT_IN_KCAL_ANGSTROM 3.32063711e+2L

#define SimTK_MOLAR_GAS_CONSTANT_SI 8.314472L

#define SimTK_MOLAR_GAS_CONSTANT_MD 8.314472e-3L

#define SimTK_MOLAR_GAS_CONSTANT_KCAL_ANGSTROM 1.9872065e-3L

#define SimTK_BOLTZMANN_CONSTANT_SI  1.3806505e-23L

#define SimTK_BOLTZMANN_CONSTANT_MD  SimTK_MOLAR_GAS_CONSTANT_MD

#define SimTK_BOLTZMANN_CONSTANT_KCAL_ANGSTROM SimTK_MOLAR_GAS_CONSTANT_KCAL_ANGSTROM
   /*end of Physical Constants*/

    /***************************/
    /* UNIT CONVERSION FACTORS */
    /***************************/

#define SimTK_RADIAN_TO_DEGREE 5.729577951308232087679815481410517033240547246656432154916024386e+1L

#define SimTK_DEGREE_TO_RADIAN 1.745329251994329576923690768488612713442871888541725456097191440e-2L

#define SimTK_NS_TO_S 1e-9L

#define SimTK_S_TO_NS 1e9L

#define SimTK_KCAL_TO_KJOULE 4.184L /* exact */

#define SimTK_KJOULE_TO_KCAL 2.390057361376673040152963671128107074569789674952198852772466539e-1L

#define SimTK_DALTON_TO_GRAM     1.66053886e-24L

#define SimTK_E_TO_COULOMB       SimTK_CHARGE_OF_PROTON_IN_SI

#define SimTK_EV_TO_JOULE        SimTK_CHARGE_OF_PROTON_IN_SI
    /*end of Unit Conversion Factors*/
    
#endif /* SimTK_SimTKCOMMON_CONSTANTS_H_ */