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sto_func.cpp
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196 lines (179 loc) · 4.16 KB
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#include "sto_func.h"
#include "occupy.h"
#define TWOPI 6.283185307179586
template<typename REAL>
Sto_Func<REAL>::Sto_Func()
{
this->tem = Occupy::gaussian_parameter;
}
template<typename REAL>
REAL Sto_Func<REAL>:: root_fd(REAL e)
{
REAL e_mu = (e - mu) / this->tem ;
if(e_mu > 72)
return 0;
else
return 1 / sqrt(1 + exp(e_mu));
}
template<typename REAL>
REAL Sto_Func<REAL>:: nroot_fd(REAL e)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL ne_mu = (e * DeltaE + Ebar - mu) / this->tem ;
if(ne_mu > 72)
return 0;
else
return 1 / sqrt(1 + exp(ne_mu));
}
template<typename REAL>
REAL Sto_Func<REAL>:: fd(REAL e)
{
REAL e_mu = (e - mu) / this->tem ;
if(e_mu > 36)
return 0;
else
return 1 / (1 + exp(e_mu));
}
template<typename REAL>
REAL Sto_Func<REAL>:: nfd(REAL e)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL ne_mu = (e * DeltaE + Ebar - mu) / this->tem ;
if(ne_mu > 36)
return 0;
else
return 1 / (1 + exp(ne_mu));
}
template<typename REAL>
REAL Sto_Func<REAL>:: nxfd(REAL rawe)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL e = rawe * DeltaE + Ebar;
REAL ne_mu = (e - mu) / this->tem ;
if(ne_mu > 36)
return 0;
else
return e / (1 + exp(ne_mu));
}
template<typename REAL>
REAL Sto_Func<REAL>:: fdlnfd(REAL e)
{
REAL e_mu = (e - mu) / this->tem ;
if(e_mu > 36)
return 0;
else if(e_mu < -36)
return 0;
else
{
REAL f = 1 / (1 + exp(e_mu));
return (f * log(f) + (1.0-f) * log(1.0-f));
}
}
template<typename REAL>
REAL Sto_Func<REAL>:: nfdlnfd(REAL rawe)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL ne_mu = (rawe * DeltaE + Ebar - mu) / this->tem ;
if(ne_mu > 36)
return 0;
else if(ne_mu < -36)
return 0;
else
{
REAL f = 1 / (1 + exp(ne_mu));
return f * log(f) + (1-f) * log(1-f);
}
}
template<typename REAL>
REAL Sto_Func<REAL>:: n_root_fdlnfd(REAL rawe)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL ne_mu = (rawe * DeltaE + Ebar - mu) / this->tem ;
if(ne_mu > 72)
return 0;
else if(ne_mu < -72)
return 0;
else
{
REAL f = 1 / (1 + exp(ne_mu));
return sqrt(-f * log(f) - (1-f) * log(1-f));
}
}
template<typename REAL>
REAL Sto_Func<REAL>::n_fd(REAL rawe)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL ne_mu = (rawe * DeltaE + Ebar - mu) / this->tem ;
if(ne_mu > 36)
return 1;
else
return 1 - 1 / (1 + exp(ne_mu));
}
template<typename REAL>
REAL Sto_Func<REAL>:: ncos(REAL rawe)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL e = rawe * DeltaE + Ebar;
return cos(e * t);
}
template<typename REAL>
REAL Sto_Func<REAL>:: nsin(REAL rawe)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL e = rawe * DeltaE + Ebar;
return sin(e * t);
}
template<typename REAL>
REAL Sto_Func<REAL>:: n_sin(REAL rawe)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL e = rawe * DeltaE + Ebar;
return -sin(e * t);
}
template<typename REAL>
REAL Sto_Func<REAL>::gauss(REAL e)
{
REAL a = pow((targ_e-e),2)/2.0/pow(sigma,2);
if(a > 72)
return 0;
else
return exp(-a) /sqrt(TWOPI) / sigma ;
}
template<typename REAL>
REAL Sto_Func<REAL>::ngauss(REAL rawe)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL e = rawe * DeltaE + Ebar;
REAL a = pow((targ_e-e),2)/2.0/pow(sigma,2);
if(a > 32)
return 0;
else
return exp(-a) /sqrt(TWOPI) / sigma ;
}
template<typename REAL>
REAL Sto_Func<REAL>::nroot_gauss(REAL rawe)
{
REAL Ebar = (Emin + Emax)/2;
REAL DeltaE = (Emax - Emin)/2;
REAL e = rawe * DeltaE + Ebar;
REAL a = pow((targ_e-e),2)/4.0/pow(sigma,2);
if(a > 32)
return 0;
else
return exp(-a) /sqrt(sqrt(TWOPI) * sigma) ;
}
//we only have two examples: double and float.
template class Sto_Func<double>;
#ifdef __MIX_PRECISION
template class Sto_Func<float>;
#endif