41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
////////////////////////////////////////////////////////////////////////////
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//traits classes
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#ifndef _LA_TRAITS_INCL
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#define _LA_TRAITS_INCL
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//default one, good for numbers
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template<class C> struct NRMat_traits {
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typedef C elementtype;
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typedef C producttype;
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static C norm (const C &x) {return abs(x);}
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static void axpy (C &s, const C &x, const C &c) {s+=x*c;}
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};
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//specializations
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template<> struct NRMat_traits<NRMat<double> > {
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typedef double elementtype;
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typedef NRMat<double> producttype;
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static double norm (const NRMat<double> &x) {return x.norm();}
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static void axpy (NRMat<double>&s, const NRMat<double> &x, const double c) {s.axpy(c,x);}
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};
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template<> struct NRMat_traits<NRSMat<double> > {
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typedef double elementtype;
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typedef NRMat<double> producttype;
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static const double norm (const NRSMat<double> &x) {return x.norm(0.);}
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static void axpy (NRSMat<double>&s, const NRSMat<double> &x, const double c) {s.axpy(c,x);}
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};
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template<> struct NRMat_traits<NRMat<complex<double> > > {
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typedef complex<double> elementtype;
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typedef NRMat<complex<double> > producttype;
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static double norm (const NRMat<complex<double> > &x) {return x.norm();}
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static void axpy (NRMat<complex<double> >&s, const NRMat<complex<double> > &x, const complex<double> c) {s.axpy(c,x);}
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};
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#endif
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