physics_funcs.h

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/* Copyright (C) 2002-2012
   Patrick Eriksson <Patrick.Eriksson@chalmers.se>
   Stefan Buehler   <sbuehler@ltu.se>
 
   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, 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; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
   USA. */
 
#ifndef physics_h
#define physics_h
 
/*===========================================================================
  === External declarations
  ===========================================================================*/
 
#include "arts_conversions.h"
#include "arts.h"
#include "matpackI.h"
#include "matpack_complex.h"
 
/*===========================================================================
  === Functions in physics_funcs.h
  ===========================================================================*/
 
Numeric barometric_heightformula(const Numeric& p, const Numeric& dh);
 
Numeric dinvplanckdI(const Numeric& i, const Numeric& f);
 
void fresnel(Complex& Rv,
             Complex& Rh,
             const Complex& n1,
             const Complex& n2,
             const Numeric& theta);
 
Numeric invplanck(const Numeric& i, const Numeric& f);
 
Numeric invrayjean(const Numeric& i, const Numeric& f);
 
constexpr Numeric number_density(Numeric p, Numeric t) noexcept {return p / (Constant::k * t);}
 
constexpr Numeric dnumber_density_dt(Numeric p, Numeric t) noexcept {return - p / (Constant::k * Math::pow2(t));}
 
Numeric planck(const Numeric& f, const Numeric& t);
 
void planck(VectorView b, const ConstVectorView& f, const Numeric& t);
 
Vector planck(const ConstVectorView& f, const Numeric& t);
 
Numeric dplanck_dt(const Numeric& f, const Numeric& t);
 
void dplanck_dt(VectorView b, const ConstVectorView& f, const Numeric& t);
 
Vector dplanck_dt(const ConstVectorView& f, const Numeric& t);
 
Numeric dplanck_df(const Numeric& f, const Numeric& t);
 
Vector dplanck_df(const ConstVectorView& f, const Numeric& t);
 
Numeric rayjean(const Numeric& f, const Numeric& t);
 
#ifdef ENABLE_REFICE
extern "C" {
#endif
Complex refice_(const Numeric& wavlen, const Numeric& temp);
#ifdef ENABLE_REFICE
}
#endif
 
#endif  // physics_h