| //##################################################################### |
| // Copyright 2002-2004, Robert Bridson, Ronald Fedkiw, Geoffrey Irving. |
| // This file is part of PhysBAM whose distribution is governed by the license contained in the accompanying file PHYSBAM_COPYRIGHT.txt. |
| //##################################################################### |
| #ifndef __constants__ |
| #define __constants__ |
| |
| #include <math.h> |
| namespace PhysBAM |
| { |
| |
| const double pi = 4 * atan (1.); |
| const double two_pi = 2 * pi; |
| const double two_thirds_pi = 2. / 3 * pi; |
| const double four_thirds_pi = 4. / 3 * pi; |
| const double one_over_four_pi = .25 / pi; |
| |
| const double one_third = 1. / 3; |
| const double two_thirds = 2. / 3; |
| const double five_thirds = 5. / 3; |
| const double one_sixth = 1. / 6; |
| const double one_ninth = 1. / 9; |
| const double one_twelfth = 1. / 12; |
| const double one_twenty_seventh = 1. / 27; |
| const double thirteen_over_twelve = 13. / 12; |
| const double root_two = sqrt (2.); |
| const double root_three = sqrt (3.); |
| const double root_six = sqrt (6.); |
| const double root_two_thirds = sqrt (2. / 3); |
| const double one_over_root_two = 1. / sqrt (2.); |
| |
| const double speed_of_light = 2.99792458e8; // m/s |
| const double plancks_constant = 6.6260755e-34; // J*s |
| const double boltzmanns_constant = 1.380658e-23; // J/K |
| |
| } |
| #endif |
| |
