//# Constants.cc: Mathematical and physical constants //# Copyright (C) 1993,1994,1995,1997,1998,1999,2002 //# Associated Universities, Inc. Washington DC, USA. //# //# This library is free software; you can redistribute it and/or modify it //# under the terms of the GNU Library General Public License as published by //# the Free Software Foundation; either version 2 of the License, or (at your //# option) any later version. //# //# This library 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 Library General Public //# License for more details. //# //# You should have received a copy of the GNU Library General Public License //# along with this library; if not, write to the Free Software Foundation, //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA. //# //# Correspondence concerning AIPS++ should be addressed as follows: //# Internet email: aips2-request@nrao.edu. //# Postal address: AIPS++ Project Office //# National Radio Astronomy Observatory //# 520 Edgemont Road //# Charlottesville, VA 22903-2475 USA //# //# $Id$ #include namespace casacore { //# NAMESPACE CASACORE - BEGIN // Been changed for SUN CC port //---------------------------------------------------------------------------- // Mathematical constants //---------------------------------------------------------------------------- // Reference: // "Handbook of Mathematical Functions", // Abramowitz & Stegun, 1964. // Dover Publications Inc., New York (9th printing, 1972) //---------------------------------------------------------------------------- // Irrationals: const Double C::sqrt2 = 1.4142135623730950488; const Double C::sqrt3 = 1.7320508075688772935; const Double C::_1_sqrt2 = 0.70710678118654752440; const Double C::_1_sqrt3 = 0.57735026918962576451; // Pi and functions thereof: const Double C::pi = 3.141592653589793238462643; const Double C::_2pi = 6.283185307179586476925286; const Double C::pi_2 = 1.570796326794896619231322; const Double C::pi_4 = 0.7853981633974483096156608; const Double C::_1_pi = 0.3183098861837906715377675; const Double C::_2_pi = 0.6366197723675813430755350; const Double C::_1_sqrtpi = 0.5641895835477562869480795; const Double C::_2_sqrtpi = 1.1283791670955125738961590; // e and functions thereof: const Double C::e = 2.718281828459045235360287; const Double C::ln2 = 0.6931471805599453094172321; const Double C::ln10 = 2.3025850929940456840179915; const Double C::log2e = 1.4426950408889634074; const Double C::log10e = 0.4342944819032518276511289; // gamma and functions thereof: const Double C::gamma = 0.577215664901532860606512; const Double C::lngamma = -0.549539312981644822337662; const Double C::etogamma = 1.7810724179901979852; // statistics related const Double C::probit_3_4 = 1.482602218505602; //---------------------------------------------------------------------------- // Machine constants //---------------------------------------------------------------------------- const Double C::flt_min = FLT_MIN; const Double C::minfloat = FLT_MIN; const Double C::dbl_min = DBL_MIN; const Double C::mindouble = DBL_MIN; const Double C:: flt_max = FLT_MAX; const Double C:: dbl_max = DBL_MAX; const Double C::flt_epsilon = FLT_EPSILON; const Double C::dbl_epsilon = DBL_EPSILON; //---------------------------------------------------------------------------- // Physical constants and conversion factors //---------------------------------------------------------------------------- // References: // "Explanatory Supplement to the Astronomical Almanac", // // "Handbook of Chemistry and Physics", 55th ed. // Robert C. Weast (Ed), 1974. // CRC Press Inc. // ISBN 087819-54-1 //---------------------------------------------------------------------------- //---------------------------------------------------------------------------- // Physical constants, and quantities //---------------------------------------------------------------------------- // Fundamental physical constants (SI units): const Double C::c = 2.99792458e+08; //---------------------------------------------------------------------------- // Numerical conversion factors //---------------------------------------------------------------------------- // Metric prefixes (unity): const Double C::yotta = 1.0e+24; const Double C::zetta = 1.0e+21; const Double C::exa = 1.0e+18; const Double C::peta = 1.0e+15; const Double C::tera = 1.0e+12; const Double C::giga = 1.0e+09; const Double C::mega = 1.0e+06; const Double C::kilo = 1.0e+03; const Double C::hecto = 1.0e+02; const Double C::deka = 1.0e+01; const Double C::deci = 1.0e-01; const Double C::centi = 1.0e-02; const Double C::milli = 1.0e-03; const Double C::micro = 1.0e-06; const Double C::nano = 1.0e-09; const Double C::pico = 1.0e-12; const Double C::femto = 1.0e-15; const Double C::atto = 1.0e-18; const Double C::zepto = 1.0e-21; const Double C::yocto = 1.0e-24; // Angular measure: const Double C::radian = 1.0; const Double C::circle = 6.2831853071795864769252867; const Double C::degree = 0.0174532925199432957692369; const Double C::arcmin = 0.000290888208665721596153948459; const Double C::arcsec = 0.00000484813681109535993589914098765; // Solid angular measure: const Double C::steradian = 1.0; const Double C::sphere = 12.56637061435917295385057344; const Double C::square_degree = 0.30461741978670859934674354486e-3; const Double C::square_arcmin = 0.8461594994075238870742876246233e-7; const Double C::square_arcsec = 0.235044305390978857520635451284e-10; //---------------------------------------------------------------------------- // Physical conversion factors //---------------------------------------------------------------------------- // Time interval [T]: const Double C::second = 1.0; const Double C::minute = 60.0; const Double C::hour = 3600.0; const Double C::day = 86400.0; const Double C::MJD0 = 2400000.5; } //# NAMESPACE CASACORE - END