shells/fem/surfaceProp.h

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/* -*- C -*- */
/*
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *                                   Fehmi Cirak
 *                        California Institute of Technology
 *                           (C) 2003 All Rights Reserved
 *
 * <LicenseText>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
#ifndef SURFACEPROP_H
#define SURFACEPROP_H

#include "definitions.h"

#ifdef __cplusplus
namespace shells {
#define DECLARE_EXTERN extern "C"
#else
#define DECLARE_EXTERN extern
#endif
    
    typedef struct SurfacePropS {
        double   akov[3][3];       /* covariant base */ 
        double   akov2[3][3];      
        double   akon[3][3];       /* contravariant base */
        double   amkov[3][3];      /* covariant metric */
        double   amkon[3][3];      /* contravariant metric */
        double   det;              /* determinant of the covariant metric */
        double   a3d[2][3];        
    } SurfaceProp;
    
    
    struct ShapeFunctionS;
    
    DECLARE_EXTERN void svmtr (double x[3][MAXVAL], 
                               SurfaceProp *a, 
                               struct ShapeFunctionS *shap, 
                               int nst);
    
    DECLARE_EXTERN void sa3der (double a3d[2][3], 
                                double akovr[3][3], 
                                double akovr2[3][3]);

    DECLARE_EXTERN void svmtrshellspace3 (SurfaceProp *a, 
                                          SurfaceProp *g, 
                                          double thet3, 
                                          double stretch);
    
    DECLARE_EXTERN void sakovariant (double x[3][MAXVAL], 
                                     struct ShapeFunctionS *shap, 
                                     int nst, 
                                     double akov[3][3], 
                                     double *det);
    
    DECLARE_EXTERN double detrddetlin (double akovc[3][3], 
                                       double a3dc[2][3], 
                                       double stretch, 
                                       double thet3);

#ifdef __cplusplus
}
#endif
#undef DECLARE_EXTERN

#endif
/* End of file */

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