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author | Nao Pross <np@0hm.ch> | 2024-02-12 14:52:43 +0100 |
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committer | Nao Pross <np@0hm.ch> | 2024-02-12 14:52:43 +0100 |
commit | eda5bc26f44ee9a6f83dcf8c91f17296d7fc509d (patch) | |
tree | bc2efa38ff4e350f9a111ac87065cd7ae9a911c7 /src/armadillo/include/armadillo_bits/fn_diagmat.hpp | |
download | fsisotool-eda5bc26f44ee9a6f83dcf8c91f17296d7fc509d.tar.gz fsisotool-eda5bc26f44ee9a6f83dcf8c91f17296d7fc509d.zip |
Move into version control
Diffstat (limited to 'src/armadillo/include/armadillo_bits/fn_diagmat.hpp')
-rw-r--r-- | src/armadillo/include/armadillo_bits/fn_diagmat.hpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/fn_diagmat.hpp b/src/armadillo/include/armadillo_bits/fn_diagmat.hpp new file mode 100644 index 0000000..7d6c5b0 --- /dev/null +++ b/src/armadillo/include/armadillo_bits/fn_diagmat.hpp @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: Apache-2.0 +// +// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au) +// Copyright 2008-2016 National ICT Australia (NICTA) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +// ------------------------------------------------------------------------ + + +//! \addtogroup fn_diagmat +//! @{ + + +//! interpret a matrix or a vector as a diagonal matrix (ie. off-diagonal entries are zero) +template<typename T1> +arma_warn_unused +arma_inline +typename +enable_if2 + < + is_arma_type<T1>::value, + const Op<T1, op_diagmat> + >::result +diagmat(const T1& X) + { + arma_extra_debug_sigprint(); + + return Op<T1, op_diagmat>(X); + } + + + +//! create a matrix with the k-th diagonal set to the given vector +template<typename T1> +arma_warn_unused +arma_inline +typename +enable_if2 + < + is_arma_type<T1>::value, + const Op<T1, op_diagmat2> + >::result +diagmat(const T1& X, const sword k) + { + arma_extra_debug_sigprint(); + + const uword row_offset = (k < 0) ? uword(-k) : uword(0); + const uword col_offset = (k > 0) ? uword( k) : uword(0); + + return Op<T1, op_diagmat2>(X, row_offset, col_offset); + } + + + +template<typename T1> +arma_warn_unused +inline +const SpOp<T1, spop_diagmat> +diagmat(const SpBase<typename T1::elem_type,T1>& X) + { + arma_extra_debug_sigprint(); + + return SpOp<T1, spop_diagmat>(X.get_ref()); + } + + + +template<typename T1> +arma_warn_unused +inline +const SpOp<T1, spop_diagmat2> +diagmat(const SpBase<typename T1::elem_type,T1>& X, const sword k) + { + arma_extra_debug_sigprint(); + + const uword row_offset = (k < 0) ? uword(-k) : uword(0); + const uword col_offset = (k > 0) ? uword( k) : uword(0); + + return SpOp<T1, spop_diagmat2>(X.get_ref(), row_offset, col_offset); + } + + + +//! @} |