Mercurial > hg > segmenter-vamp-plugin
diff armadillo-3.900.4/include/armadillo_bits/glue_toeplitz_meat.hpp @ 49:1ec0e2823891
Switch to using subrepo copies of qm-dsp, nnls-chroma, vamp-plugin-sdk; update Armadillo version; assume build without external BLAS/LAPACK
author | Chris Cannam |
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date | Thu, 13 Jun 2013 10:25:24 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/armadillo-3.900.4/include/armadillo_bits/glue_toeplitz_meat.hpp Thu Jun 13 10:25:24 2013 +0100 @@ -0,0 +1,63 @@ +// Copyright (C) 2010-2013 NICTA (www.nicta.com.au) +// Copyright (C) 2010-2013 Conrad Sanderson +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this +// file, You can obtain one at http://mozilla.org/MPL/2.0/. + + + +//! \addtogroup glue_toeplitz +//! @{ + + + +template<typename T1, typename T2> +inline +void +glue_toeplitz::apply(Mat<typename T1::elem_type>& out, const Glue<T1, T2, glue_toeplitz>& in) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + const unwrap_check<T1> tmp1(in.A, out); + const unwrap_check<T2> tmp2(in.B, out); + + const Mat<eT>& A = tmp1.M; + const Mat<eT>& B = tmp2.M; + + arma_debug_check + ( + ( ((A.is_vec() == false) && (A.is_empty() == false)) || ((B.is_vec() == false) && (B.is_empty() == false)) ), + "toeplitz(): given object is not a vector" + ); + + const uword A_N = A.n_elem; + const uword B_N = B.n_elem; + + const eT* A_mem = A.memptr(); + const eT* B_mem = B.memptr(); + + out.set_size(A_N, B_N); + + if( out.is_empty() ) { return; } + + for(uword col=0; col < B_N; ++col) + { + eT* col_mem = out.colptr(col); + + uword i = 0; + for(uword row=col; row < A_N; ++row, ++i) { col_mem[row] = A_mem[i]; } + } + + for(uword row=0; row < A_N; ++row) + { + uword i = 1; + for(uword col=(row+1); col < B_N; ++col, ++i) { out.at(row,col) = B_mem[i]; } + } + } + + + +//! @}