Walsh
The Walsh matrix of order \(k\) is a \(2^k \times 2^k\) matrix, where
\[\begin{split}W_1 = \left(\begin{array}{cc} 1 & 1 \\ 1 & -1 \end{array}\right),\end{split}\]
and
\[\begin{split}W_k = \left(\begin{array}{cc} W_{k-1} & W_{k-1} \\ W_{k-1} & -W_{k-1}
\end{array}\right).\end{split}\]
A binary Walsh matrix changes the bottom-right entry of \(W_1\) from
\(-1\) to \(0\).
C API
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ElError
ElWalsh_i(ElMatrix_i W, ElInt k, bool binary)
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ElError
ElWalsh_s(ElMatrix_s W, ElInt k, bool binary)
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ElError
ElWalsh_d(ElMatrix_d W, ElInt k, bool binary)
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ElError
ElWalsh_c(ElMatrix_c W, ElInt k, bool binary)
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ElError
ElWalsh_z(ElMatrix_z W, ElInt k, bool binary)
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ElError
ElWalshDist_i(ElDistMatrix_i W, ElInt k, bool binary)
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ElError
ElWalshDist_s(ElDistMatrix_s W, ElInt k, bool binary)
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ElError
ElWalshDist_d(ElDistMatrix_d W, ElInt k, bool binary)
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ElError
ElWalshDist_c(ElDistMatrix_c W, ElInt k, bool binary)
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ElError
ElWalshDist_z(ElDistMatrix_z W, ElInt k, bool binary)
Python API
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Walsh(W, k, binary=False)
