Imported healpix tree

external/healpix/cxxsupport/lsconstants.h

@@ -0,0 +1,93 @@
+/*
+ *  This file is part of libcxxsupport.
+ *
+ *  libcxxsupport 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.
+ *
+ *  libcxxsupport 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 libcxxsupport; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ *  libcxxsupport is being developed at the Max-Planck-Institut fuer Astrophysik
+ *  and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
+ *  (DLR).
+ */
+
+/*! \file lsconstants.h
+ *  Mathematical, physical and technical constants for LevelS.
+ */
+
+#ifndef PLANCK_CONSTANTS_H
+#define PLANCK_CONSTANTS_H
+
+/*! \defgroup mathconstgroup Mathematical constants */
+/*! \{ */
+
+const double pi=3.141592653589793238462643383279502884197;
+const double twopi=6.283185307179586476925286766559005768394;
+const double inv_twopi=1.0/twopi;
+const double fourpi=12.56637061435917295385057353311801153679;
+const double halfpi=1.570796326794896619231321691639751442099;
+const double inv_halfpi=0.6366197723675813430755350534900574;
+const double inv_sqrt4pi = 0.2820947917738781434740397257803862929220;
+
+const double ln2 = 0.6931471805599453094172321214581766;
+const double inv_ln2 = 1.4426950408889634073599246810018921;
+const double ln10 = 2.3025850929940456840179914546843642;
+
+const double onethird=1.0/3.0;
+const double twothird=2.0/3.0;
+const double fourthird=4.0/3.0;
+
+const double degr2rad=pi/180.0;
+const double arcmin2rad=degr2rad/60;
+const double rad2degr=180.0/pi;
+
+//! Ratio between FWHM and sigma of a Gauss curve (\f$\sqrt{8\ln2}\f$).
+const double sigma2fwhm=2.3548200450309493; // sqrt(8*log(2.))
+const double fwhm2sigma=1/sigma2fwhm;
+
+/*! \} */
+
+/*! \defgroup physconstgroup Physical constants */
+/*! \{ */
+
+const double Jansky2SI=1.0e-26;
+const double SI2Jansky=1.0e+26;
+
+//! Light speed in m/s (CODATA 2006)
+const double speedOfLight=2.99792458e8;
+
+//! Boltzmann's constant in J/K (CODATA 2006)
+const double kBoltzmann=1.3806504e-23;
+
+//! Stefan-Boltzmann constant in W/m^2/K^4 (CODATA 2006)
+const double sigmaStefanBoltzmann=5.6704e-8;
+
+//! Planck's constant in J s (CODATA 2006)
+const double hPlanck=6.62606896e-34;
+
+//! Astronomical unit in m
+const double astronomicalUnit=1.49597870691e11;
+
+//! Solar constant in W/m^2
+const double solarConstant=1368.0;
+
+//! Average CMB temperature in K (Mather et al. 1999, ApJ 512, 511)
+const double tcmb = 2.725;
+
+//! offset (in seconds) between Jan 1, 1958 and Jan 1, 1970
+const double sec_58_70 = 378691200.;
+
+/*! \} */
+
+#endif