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Grid/lib/algorithms/approx/MultiShiftFunction.h
Peter Boyle a842a6c94d One flavour rational unprec added; untested but does compile.
Moving param structs into a single header for later connection to file I/O using
macromagic.h
2015-08-18 14:40:08 +01:00

38 lines
918 B
C++

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