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48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
#ifndef GRID_MATH_OUTER_H
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#define GRID_MATH_OUTER_H
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namespace Grid {
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///////////////////////////////////////////////////////////////////////////////////////
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// outerProduct Scalar x Scalar -> Scalar
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// Vector x Vector -> Matrix
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///////////////////////////////////////////////////////////////////////////////////////
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template<class l,class r,int N> inline
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auto outerProduct (const iVector<l,N>& lhs,const iVector<r,N>& rhs) -> iMatrix<decltype(outerProduct(lhs._internal[0],rhs._internal[0])),N>
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{
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typedef decltype(outerProduct(lhs._internal[0],rhs._internal[0])) ret_t;
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iMatrix<ret_t,N> ret;
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for(int c1=0;c1<N;c1++){
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for(int c2=0;c2<N;c2++){
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ret._internal[c1][c2] = outerProduct(lhs._internal[c1],rhs._internal[c2]);
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}}
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return ret;
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}
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template<class l,class r> inline
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auto outerProduct (const iScalar<l>& lhs,const iScalar<r>& rhs) -> iScalar<decltype(outerProduct(lhs._internal,rhs._internal))>
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{
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typedef decltype(outerProduct(lhs._internal,rhs._internal)) ret_t;
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iScalar<ret_t> ret;
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ret._internal = outerProduct(lhs._internal,rhs._internal);
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return ret;
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}
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inline ComplexF outerProduct(const ComplexF &l, const ComplexF& r)
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{
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return l*r;
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}
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inline ComplexD outerProduct(const ComplexD &l, const ComplexD& r)
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{
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return l*r;
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}
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inline RealF outerProduct(const RealF &l, const RealF& r)
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{
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return l*r;
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}
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inline RealD outerProduct(const RealD &l, const RealD& r)
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{
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return l*r;
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}
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}
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#endif
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