star_global.C

/*
 * Methods of class Star to compute global quantities
 */

/*
 *   Copyright (c) 2004 francois Limousin
 *
 *   This file is part of LORENE.
 *
 *   LORENE 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.
 *
 *   LORENE 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 LORENE; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


char star_global_C[] = "$Header: /cvsroot/Lorene/C++/Source/Star/star_global.C,v 1.4 2009/10/26 10:54:33 j_novak Exp $" ;

/*
 * $Id: star_global.C,v 1.4 2009/10/26 10:54:33 j_novak Exp $
 * $Log: star_global.C,v $
 * Revision 1.4  2009/10/26 10:54:33  j_novak
 * Added the case of a NONSYM base in theta.
 *
 * Revision 1.3  2007/06/21 19:55:09  k_taniguchi
 * Introduction of a method to compute ray_eq_3pis2().
 *
 * Revision 1.2  2004/01/20 15:20:48  f_limousin
 * First version
 *
 *
 * $Header: /cvsroot/Lorene/C++/Source/Star/star_global.C,v 1.4 2009/10/26 10:54:33 j_novak Exp $
 *
 */

// Headers C
#include "math.h"

// Headers Lorene
#include "star.h"

            //--------------------------//
            //  Stellar surface     //
            //--------------------------//

const Itbl& Star::l_surf() const {

    if (p_l_surf == 0x0) {    // a new computation is required
    
    assert(p_xi_surf == 0x0) ;  // consistency check
    
    int np = mp.get_mg()->get_np(0) ;   
    int nt = mp.get_mg()->get_nt(0) ;   
    
    p_l_surf = new Itbl(np, nt) ;
    p_xi_surf = new Tbl(np, nt) ;
    
    double ent0 = 0 ;   // definition of the surface
    double precis = 1.e-15 ; 
    int nitermax = 100 ; 
    int niter ; 
    
    (ent.get_spectral_va()).equipot(ent0, nzet, precis, nitermax, niter, *p_l_surf, 
            *p_xi_surf) ; 
    
    }
   
    return *p_l_surf ; 
    
}

const Tbl& Star::xi_surf() const {

    if (p_xi_surf == 0x0) {    // a new computation is required
    
    assert(p_l_surf == 0x0) ;  // consistency check
    
    l_surf() ;  // the computation is done by l_surf()
    
    }
   
    return *p_xi_surf ; 
    
}


            //--------------------------//
            //  Coordinate radii    //
            //--------------------------//

double Star::ray_eq() const {

    if (p_ray_eq == 0x0) {    // a new computation is required
    
    const Mg3d& mg = *(mp.get_mg()) ;
    
    int type_t = mg.get_type_t() ; 
#ifndef NDEBUG
    int type_p = mg.get_type_p() ; 
#endif
    int nt = mg.get_nt(0) ;     
    
    assert( (type_t == SYM) || (type_t == NONSYM) ) ; 
    assert( (type_p == SYM) || (type_p == NONSYM) ) ; 
    int k = 0 ; 
    int j = (type_t == SYM ? nt-1 : nt / 2); 
    int l = l_surf()(k, j) ; 
    double xi = xi_surf()(k, j) ; 
    double theta = M_PI / 2 ; 
    double phi = 0 ; 
        
    p_ray_eq = new double( mp.val_r(l, xi, theta, phi) ) ;

    }
    
    return *p_ray_eq ; 

} 


double Star::ray_eq_pis2() const {

    if (p_ray_eq_pis2 == 0x0) {    // a new computation is required
    
    const Mg3d& mg = *(mp.get_mg()) ;
    
    int type_t = mg.get_type_t() ; 
    int type_p = mg.get_type_p() ; 
    int nt = mg.get_nt(0) ;     
    int np = mg.get_np(0) ;     
    
    int j = (type_t == SYM ? nt-1 : nt / 2); 
    double theta = M_PI / 2 ; 
    double phi = M_PI / 2 ;
        
    switch (type_p) {
        
        case SYM : {
        int k = np / 2  ; 
        int l = l_surf()(k, j) ; 
        double xi = xi_surf()(k, j) ; 
        p_ray_eq_pis2 = new double( mp.val_r(l, xi, theta, phi) ) ;
        break ; 
        }
        
        case NONSYM : {
        assert( np % 4 == 0 ) ; 
        int k = np / 4  ; 
        int l = l_surf()(k, j) ; 
        double xi = xi_surf()(k, j) ; 
        p_ray_eq_pis2 = new double( mp.val_r(l, xi, theta, phi) ) ;
        break ; 
        }
        
        default : {
        cout << "Star::ray_eq_pis2 : the case type_p = " 
             << type_p << " is not contemplated yet !" << endl ;
        abort() ; 
        }
    } 

    }
    
    return *p_ray_eq_pis2 ; 

} 


double Star::ray_eq_pi() const {

    if (p_ray_eq_pi == 0x0) {    // a new computation is required
    
    const Mg3d& mg = *(mp.get_mg()) ;
    
    int type_t = mg.get_type_t() ; 
    int type_p = mg.get_type_p() ; 
    int nt = mg.get_nt(0) ;     
    int np = mg.get_np(0) ;     
    
    assert ( ( type_t == SYM ) || ( type_t == NONSYM ) ) ;
    
    switch (type_p) {
        
        case SYM : {
        p_ray_eq_pi = new double( ray_eq() ) ;
        break ; 
        }       
        
        case NONSYM : {
        int k = np / 2  ; 
        int j = (type_t == SYM ? nt-1 : nt/2 ) ; 
        int l = l_surf()(k, j) ; 
        double xi = xi_surf()(k, j) ; 
        double theta = M_PI / 2 ; 
        double phi = M_PI ; 
        
        p_ray_eq_pi = new double( mp.val_r(l, xi, theta, phi) ) ;
        break ;
        }
        
        default : {

        cout << "Star::ray_eq_pi : the case type_p = " << type_p << endl ; 
        cout << " is not contemplated yet !" << endl ;
        abort() ; 
        break ; 
        }
    }

    }
    
    return *p_ray_eq_pi ; 

} 

double Star::ray_eq_3pis2() const {

    if (p_ray_eq_3pis2 == 0x0) {    // a new computation is required
    
    const Mg3d& mg = *(mp.get_mg()) ;
    
    int type_t = mg.get_type_t() ; 
    int type_p = mg.get_type_p() ; 
    int nt = mg.get_nt(0) ;     
    int np = mg.get_np(0) ;     
    
    assert( ( type_t == SYM ) || ( type_t == NONSYM ) ) ;
    
    int j = (type_t == SYM ? nt-1 : nt/2 ); 
    double theta = M_PI / 2 ; 
    double phi = 3. * M_PI / 2 ;
        
    switch (type_p) {
        
        case SYM : {
        p_ray_eq_3pis2 = new double( ray_eq_pis2() ) ;
        break ; 
        }
        
        case NONSYM : {
        assert( np % 4 == 0 ) ; 
        int k = 3 * np / 4  ; 
        int l = l_surf()(k, j) ; 
        double xi = xi_surf()(k, j) ; 
        p_ray_eq_3pis2 = new double( mp.val_r(l, xi, theta, phi) ) ;
        break ; 
        }
        
        default : {
        cout << "Star::ray_eq_3pis2 : the case type_p = " 
             << type_p << " is not implemented yet !" << endl ;
        abort() ; 
        }
    } 
    }
    
    return *p_ray_eq_3pis2 ; 

} 

double Star::ray_pole() const {

    if (p_ray_pole == 0x0) {    // a new computation is required
    
#ifndef NDEBUG
    const Mg3d& mg = *(mp.get_mg()) ;
    int type_t = mg.get_type_t() ; 
#endif  
    assert( (type_t == SYM) || (type_t == NONSYM) ) ;  
    
    int k = 0 ; 
    int j = 0 ; 
    int l = l_surf()(k, j) ; 
    double xi = xi_surf()(k, j) ; 
    double theta = 0 ; 
    double phi = 0 ; 
        
    p_ray_pole = new double( mp.val_r(l, xi, theta, phi) ) ;

    }
    
    return *p_ray_pole ; 

} 

            //--------------------------//
            //  Baryon mass     //
            //--------------------------//

double Star::mass_b() const {

    if (p_mass_b == 0x0) {    // a new computation is required
    
    cout << 
        "Star::mass_b : in the relativistic case, the baryon mass"
         << endl << 
        "computation cannot be performed by the base class Star !" 
         << endl ; 
    abort() ; 
    }
    
    return *p_mass_b ; 

} 
        
            //----------------------------//
            //  Gravitational mass    //
            //----------------------------//

double Star::mass_g() const {

    if (p_mass_g == 0x0) {    // a new computation is required
    
    cout << 
        "Star::mass_g : in the relativistic case, the gravitational mass"
         << endl << 
        "computation cannot be performed by the base class Star !" 
         << endl ; 
    abort() ; 
    }
    
    return *p_mass_g ; 

} 
        

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