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Functor initialisation

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This commit is contained in:
Peter Boyle 2024-08-27 11:01:02 -04:00
parent c164bff758
commit 77944437ce
1 changed files with 21 additions and 1 deletions
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22
Grid/algorithms/approx/Chebyshev.h
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@ -59,7 +59,7 @@ public:
RealD diff = hi-lo;
RealD delta = diff*1.0e-9;
for (RealD x=lo; x<hi; x+=delta) {
delta*=1.1;
delta*=1.02;
RealD f = approx(x);
out<< x<<" "<<f<<std::endl;
}
@ -131,6 +131,26 @@ public:
Coeffs[j] = s * 2.0/order;
}
};
template<class functor>
void Init(RealD _lo,RealD _hi,int _order, functor & func)
{
lo=_lo;
hi=_hi;
order=_order;
if(order < 2) exit(-1);
Coeffs.resize(order);
for(int j=0;j<order;j++){
RealD s=0;
for(int k=0;k<order;k++){
RealD y=std::cos(M_PI*(k+0.5)/order);
RealD x=0.5*(y*(hi-lo)+(hi+lo));
RealD f=func(x);
s=s+f*std::cos( j*M_PI*(k+0.5)/order );
}
Coeffs[j] = s * 2.0/order;
}
};
void JacksonSmooth(void){