109 lines
2.8 KiB
C++
109 lines
2.8 KiB
C++
// 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_powmat
|
|
//! @{
|
|
|
|
|
|
template<typename T1>
|
|
arma_warn_unused
|
|
inline
|
|
typename enable_if2< is_supported_blas_type<typename T1::elem_type>::value, const Op<T1,op_powmat> >::result
|
|
powmat(const Base<typename T1::elem_type,T1>& X, const int y)
|
|
{
|
|
arma_debug_sigprint();
|
|
|
|
const uword aux_a = (y < int(0)) ? uword(-y) : uword(y);
|
|
const uword aux_b = (y < int(0)) ? uword(1) : uword(0);
|
|
|
|
return Op<T1,op_powmat>(X.get_ref(), aux_a, aux_b);
|
|
}
|
|
|
|
|
|
|
|
template<typename T1>
|
|
inline
|
|
typename enable_if2< is_supported_blas_type<typename T1::elem_type>::value, bool >::result
|
|
powmat
|
|
(
|
|
Mat<typename T1::elem_type>& out,
|
|
const Base<typename T1::elem_type,T1>& X,
|
|
const int y
|
|
)
|
|
{
|
|
arma_debug_sigprint();
|
|
|
|
const uword y_val = (y < int(0)) ? uword(-y) : uword(y);
|
|
const bool y_neg = (y < int(0));
|
|
|
|
const bool status = op_powmat::apply_direct(out, X.get_ref(), y_val, y_neg);
|
|
|
|
if(status == false)
|
|
{
|
|
out.soft_reset();
|
|
arma_warn(3, "powmat(): transformation failed");
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
|
|
template<typename T1>
|
|
arma_warn_unused
|
|
inline
|
|
typename enable_if2< is_supported_blas_type<typename T1::elem_type>::value, const mtOp<std::complex<typename T1::pod_type>,T1,op_powmat_cx> >::result
|
|
powmat(const Base<typename T1::elem_type,T1>& X, const double y)
|
|
{
|
|
arma_debug_sigprint();
|
|
|
|
typedef std::complex<typename T1::pod_type> out_eT;
|
|
|
|
return mtOp<out_eT,T1,op_powmat_cx>('j', X.get_ref(), out_eT(y));
|
|
}
|
|
|
|
|
|
|
|
template<typename T1>
|
|
inline
|
|
typename enable_if2< is_supported_blas_type<typename T1::elem_type>::value, bool >::result
|
|
powmat
|
|
(
|
|
Mat< std::complex<typename T1::pod_type> >& out,
|
|
const Base<typename T1::elem_type,T1>& X,
|
|
const double y
|
|
)
|
|
{
|
|
arma_debug_sigprint();
|
|
|
|
typedef typename T1::pod_type T;
|
|
|
|
const bool status = op_powmat_cx::apply_direct(out, X.get_ref(), T(y));
|
|
|
|
if(status == false)
|
|
{
|
|
out.soft_reset();
|
|
arma_warn(3, "powmat(): transformation failed");
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
//! @}
|