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40 lines
983 B
C++
40 lines
983 B
C++
#ifndef MULTI_SHIFT_FUNCTION
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#define MULTI_SHIFT_FUNCTION
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namespace Grid {
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class MultiShiftFunction {
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public:
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int order;
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std::vector<RealD> poles;
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std::vector<RealD> residues;
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std::vector<RealD> tolerances;
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RealD norm;
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RealD lo,hi;
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MultiShiftFunction(int n,RealD _lo,RealD _hi): poles(n), residues(n), lo(_lo), hi(_hi) {;};
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RealD approx(RealD x);
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void csv(std::ostream &out);
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void gnuplot(std::ostream &out);
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void Init(AlgRemez & remez,double tol,bool inverse)
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{
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order=remez.getDegree();
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tolerances.resize(remez.getDegree(),tol);
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poles.resize(remez.getDegree());
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residues.resize(remez.getDegree());
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remez.getBounds(lo,hi);
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if ( inverse ) remez.getIPFE (&residues[0],&poles[0],&norm);
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else remez.getPFE (&residues[0],&poles[0],&norm);
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}
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// Allow deferred initialisation
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MultiShiftFunction(void){};
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MultiShiftFunction(AlgRemez & remez,double tol,bool inverse)
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{
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Init(remez,tol,inverse);
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}
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};
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}
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#endif
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