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Diffstat (limited to 'src/armadillo/include/armadillo_bits/operator_minus.hpp')
| -rw-r--r-- | src/armadillo/include/armadillo_bits/operator_minus.hpp | 570 |
1 files changed, 570 insertions, 0 deletions
diff --git a/src/armadillo/include/armadillo_bits/operator_minus.hpp b/src/armadillo/include/armadillo_bits/operator_minus.hpp new file mode 100644 index 0000000..42047a7 --- /dev/null +++ b/src/armadillo/include/armadillo_bits/operator_minus.hpp @@ -0,0 +1,570 @@ +// 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 operator_minus +//! @{ + + + +//! unary - +template<typename T1> +arma_inline +typename +enable_if2< is_arma_type<T1>::value, const eOp<T1, eop_neg> >::result +operator- +(const T1& X) + { + arma_extra_debug_sigprint(); + + return eOp<T1,eop_neg>(X); + } + + + +//! Base - scalar +template<typename T1> +arma_inline +typename +enable_if2< is_arma_type<T1>::value, const eOp<T1, eop_scalar_minus_post> >::result +operator- + ( + const T1& X, + const typename T1::elem_type k + ) + { + arma_extra_debug_sigprint(); + + return eOp<T1, eop_scalar_minus_post>(X, k); + } + + + +//! scalar - Base +template<typename T1> +arma_inline +typename +enable_if2< is_arma_type<T1>::value, const eOp<T1, eop_scalar_minus_pre> >::result +operator- + ( + const typename T1::elem_type k, + const T1& X + ) + { + arma_extra_debug_sigprint(); + + return eOp<T1, eop_scalar_minus_pre>(X, k); + } + + + +//! complex scalar - non-complex Base +template<typename T1> +arma_inline +typename +enable_if2 + < + (is_arma_type<T1>::value && is_cx<typename T1::elem_type>::no), + const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_minus_pre> + >::result +operator- + ( + const std::complex<typename T1::pod_type>& k, + const T1& X + ) + { + arma_extra_debug_sigprint(); + + return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_minus_pre>('j', X, k); + } + + + +//! non-complex Base - complex scalar +template<typename T1> +arma_inline +typename +enable_if2 + < + (is_arma_type<T1>::value && is_cx<typename T1::elem_type>::no), + const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_minus_post> + >::result +operator- + ( + const T1& X, + const std::complex<typename T1::pod_type>& k + ) + { + arma_extra_debug_sigprint(); + + return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_minus_post>('j', X, k); + } + + + +//! subtraction of Base objects with same element type +template<typename T1, typename T2> +arma_inline +typename +enable_if2 + < + is_arma_type<T1>::value && is_arma_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value, + const eGlue<T1, T2, eglue_minus> + >::result +operator- + ( + const T1& X, + const T2& Y + ) + { + arma_extra_debug_sigprint(); + + return eGlue<T1, T2, eglue_minus>(X, Y); + } + + + +//! subtraction of Base objects with different element types +template<typename T1, typename T2> +inline +typename +enable_if2 + < + (is_arma_type<T1>::value && is_arma_type<T2>::value && (is_same_type<typename T1::elem_type, typename T2::elem_type>::no)), + const mtGlue<typename promote_type<typename T1::elem_type, typename T2::elem_type>::result, T1, T2, glue_mixed_minus> + >::result +operator- + ( + const T1& X, + const T2& Y + ) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT1; + typedef typename T2::elem_type eT2; + + typedef typename promote_type<eT1,eT2>::result out_eT; + + promote_type<eT1,eT2>::check(); + + return mtGlue<out_eT, T1, T2, glue_mixed_minus>( X, Y ); + } + + + +//! unary "-" for sparse objects +template<typename T1> +inline +typename +enable_if2 + < + is_arma_sparse_type<T1>::value && is_signed<typename T1::elem_type>::value, + SpOp<T1,spop_scalar_times> + >::result +operator- +(const T1& X) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT; + + return SpOp<T1,spop_scalar_times>(X, eT(-1)); + } + + + +//! subtraction of two sparse objects +template<typename T1, typename T2> +inline +typename +enable_if2 + < + (is_arma_sparse_type<T1>::value && is_arma_sparse_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value), + const SpGlue<T1,T2,spglue_minus> + >::result +operator- + ( + const T1& X, + const T2& Y + ) + { + arma_extra_debug_sigprint(); + + return SpGlue<T1,T2,spglue_minus>(X,Y); + } + + + +//! subtraction of one sparse and one dense object +template<typename T1, typename T2> +inline +typename +enable_if2 + < + (is_arma_sparse_type<T1>::value && is_arma_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value), + Mat<typename T1::elem_type> + >::result +operator- + ( + const T1& x, + const T2& y + ) + { + arma_extra_debug_sigprint(); + + const SpProxy<T1> pa(x); + + Mat<typename T1::elem_type> result(-y); + + arma_debug_assert_same_size( pa.get_n_rows(), pa.get_n_cols(), result.n_rows, result.n_cols, "subtraction" ); + + typename SpProxy<T1>::const_iterator_type it = pa.begin(); + typename SpProxy<T1>::const_iterator_type it_end = pa.end(); + + while(it != it_end) + { + result.at(it.row(), it.col()) += (*it); + ++it; + } + + return result; + } + + + +//! subtraction of one dense and one sparse object +template<typename T1, typename T2> +inline +typename +enable_if2 + < + (is_arma_type<T1>::value && is_arma_sparse_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value), + Mat<typename T1::elem_type> + >::result +operator- + ( + const T1& x, + const T2& y + ) + { + arma_extra_debug_sigprint(); + + Mat<typename T1::elem_type> result(x); + + const SpProxy<T2> pb(y); + + arma_debug_assert_same_size( result.n_rows, result.n_cols, pb.get_n_rows(), pb.get_n_cols(), "subtraction" ); + + typename SpProxy<T2>::const_iterator_type it = pb.begin(); + typename SpProxy<T2>::const_iterator_type it_end = pb.end(); + + while(it != it_end) + { + result.at(it.row(), it.col()) -= (*it); + ++it; + } + + return result; + } + + + +//! subtraction of two sparse objects with different element types +template<typename T1, typename T2> +inline +typename +enable_if2 + < + (is_arma_sparse_type<T1>::value && is_arma_sparse_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::no), + const mtSpGlue< typename promote_type<typename T1::elem_type, typename T2::elem_type>::result, T1, T2, spglue_minus_mixed > + >::result +operator- + ( + const T1& X, + const T2& Y + ) + { + arma_extra_debug_sigprint(); + + typedef typename T1::elem_type eT1; + typedef typename T2::elem_type eT2; + + typedef typename promote_type<eT1,eT2>::result out_eT; + + promote_type<eT1,eT2>::check(); + + return mtSpGlue<out_eT, T1, T2, spglue_minus_mixed>( X, Y ); + } + + + +//! subtraction of sparse and non-sparse objects with different element types +template<typename T1, typename T2> +inline +typename +enable_if2 + < + (is_arma_sparse_type<T1>::value && is_arma_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::no), + Mat< typename promote_type<typename T1::elem_type, typename T2::elem_type>::result > + >::result +operator- + ( + const T1& x, + const T2& y + ) + { + arma_extra_debug_sigprint(); + + Mat< typename promote_type<typename T1::elem_type, typename T2::elem_type>::result > out; + + spglue_minus_mixed::sparse_minus_dense(out, x, y); + + return out; + } + + + +//! subtraction of sparse and non-sparse objects with different element types +template<typename T1, typename T2> +inline +typename +enable_if2 + < + (is_arma_type<T1>::value && is_arma_sparse_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::no), + Mat< typename promote_type<typename T1::elem_type, typename T2::elem_type>::result > + >::result +operator- + ( + const T1& x, + const T2& y + ) + { + arma_extra_debug_sigprint(); + + Mat< typename promote_type<typename T1::elem_type, typename T2::elem_type>::result > out; + + spglue_minus_mixed::dense_minus_sparse(out, x, y); + + return out; + } + + + +//! sparse - scalar +template<typename T1> +arma_inline +typename +enable_if2< is_arma_sparse_type<T1>::value, const SpToDOp<T1, op_sp_minus_post> >::result +operator- + ( + const T1& X, + const typename T1::elem_type k + ) + { + arma_extra_debug_sigprint(); + + return SpToDOp<T1, op_sp_minus_post>(X, k); + } + + + +//! scalar - sparse +template<typename T1> +arma_inline +typename +enable_if2< is_arma_sparse_type<T1>::value, const SpToDOp<T1, op_sp_minus_pre> >::result +operator- + ( + const typename T1::elem_type k, + const T1& X + ) + { + arma_extra_debug_sigprint(); + + return SpToDOp<T1, op_sp_minus_pre>(X, k); + } + + + +// TODO: this is an uncommon use case; remove? +//! multiple applications of add/subtract scalars can be condensed +template<typename T1, typename op_type> +inline +typename +enable_if2 + < + (is_arma_sparse_type<T1>::value && + (is_same_type<op_type, op_sp_plus>::value || + is_same_type<op_type, op_sp_minus_post>::value)), + const SpToDOp<T1, op_sp_minus_post> + >::result +operator- + ( + const SpToDOp<T1, op_type>& x, + const typename T1::elem_type k + ) + { + arma_extra_debug_sigprint(); + + const typename T1::elem_type aux = (is_same_type<op_type, op_sp_plus>::value) ? -x.aux : x.aux; + + return SpToDOp<T1, op_sp_minus_post>(x.m, aux + k); + } + + + +// TODO: this is an uncommon use case; remove? +//! multiple applications of add/subtract scalars can be condensed +template<typename T1, typename op_type> +inline +typename +enable_if2 + < + (is_arma_sparse_type<T1>::value && + (is_same_type<op_type, op_sp_plus>::value || + is_same_type<op_type, op_sp_minus_post>::value)), + const SpToDOp<T1, op_sp_minus_pre> + >::result +operator- + ( + const typename T1::elem_type k, + const SpToDOp<T1, op_type>& x + ) + { + arma_extra_debug_sigprint(); + + const typename T1::elem_type aux = (is_same_type<op_type, op_sp_plus>::value) ? -x.aux : x.aux; + + return SpToDOp<T1, op_sp_minus_pre>(x.m, k + aux); + } + + + +// TODO: this is an uncommon use case; remove? +//! multiple applications of add/subtract scalars can be condensed +template<typename T1, typename op_type> +inline +typename +enable_if2 + < + (is_arma_sparse_type<T1>::value && + is_same_type<op_type, op_sp_minus_pre>::value), + const SpToDOp<T1, op_sp_minus_pre> + >::result +operator- + ( + const SpToDOp<T1, op_type>& x, + const typename T1::elem_type k + ) + { + arma_extra_debug_sigprint(); + + return SpToDOp<T1, op_sp_minus_pre>(x.m, x.aux - k); + } + + + +// TODO: this is an uncommon use case; remove? +//! multiple applications of add/subtract scalars can be condensed +template<typename T1, typename op_type> +inline +typename +enable_if2 + < + (is_arma_sparse_type<T1>::value && + is_same_type<op_type, op_sp_minus_pre>::value), + const SpToDOp<T1, op_sp_plus> + >::result +operator- + ( + const typename T1::elem_type k, + const SpToDOp<T1, op_type>& x + ) + { + arma_extra_debug_sigprint(); + + return SpToDOp<T1, op_sp_plus>(x.m, k - x.aux); + } + + + +template<typename parent, unsigned int mode, typename T2> +arma_inline +Mat<typename parent::elem_type> +operator- + ( + const subview_each1<parent,mode>& X, + const Base<typename parent::elem_type,T2>& Y + ) + { + arma_extra_debug_sigprint(); + + return subview_each1_aux::operator_minus(X, Y.get_ref()); + } + + + +template<typename T1, typename parent, unsigned int mode> +arma_inline +Mat<typename parent::elem_type> +operator- + ( + const Base<typename parent::elem_type,T1>& X, + const subview_each1<parent,mode>& Y + ) + { + arma_extra_debug_sigprint(); + + return subview_each1_aux::operator_minus(X.get_ref(), Y); + } + + + +template<typename parent, unsigned int mode, typename TB, typename T2> +arma_inline +Mat<typename parent::elem_type> +operator- + ( + const subview_each2<parent,mode,TB>& X, + const Base<typename parent::elem_type,T2>& Y + ) + { + arma_extra_debug_sigprint(); + + return subview_each2_aux::operator_minus(X, Y.get_ref()); + } + + + +template<typename T1, typename parent, unsigned int mode, typename TB> +arma_inline +Mat<typename parent::elem_type> +operator- + ( + const Base<typename parent::elem_type,T1>& X, + const subview_each2<parent,mode,TB>& Y + ) + { + arma_extra_debug_sigprint(); + + return subview_each2_aux::operator_minus(X.get_ref(), Y); + } + + + +//! @} |