math_ylmreal.h

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#ifndef MATH_YLMREAL_H
#define MATH_YLMREAL_H
 
#include "vector3.h"
#include "matrix.h"
 
namespace ModuleBase
{
 
class YlmReal 
{
    public:
 
    YlmReal();
    ~YlmReal();
 
    static void Ylm_Real
    (
        const int lmax2,        
        const int ng,               
        const ModuleBase::Vector3<double> *g, 
        matrix &ylm     
    );
 
    template <typename FPTYPE, typename Device>
    static void Ylm_Real(Device * ctx, const int lmax2, const int ng, const FPTYPE *g, FPTYPE * ylm);
 
    static void grad_Ylm_Real
    (
        const int lmax2,        
        const int ng,               
        const ModuleBase::Vector3<double> *g, 
        matrix &ylm,
        matrix &dylmx,
        matrix &dylmy,
        matrix &dylmz   
    );
    
    static void Ylm_Real2
    (
        const int lmax2,        
        const int ng,               
        const ModuleBase::Vector3<double> *g, 
        matrix &ylm         
    );
 
    static void rlylm
    (
        const int lmax,     
        const double& x,                
        const double& y,
        const double& z, 
        double* rly 
    );
 
    private:
 
    static long double Fact(const int n);
    static int Semi_Fact(const int n);
 
};
 
}
 
#endif