144 lines
4.4 KiB
C++
144 lines
4.4 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
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// Copyright 2008-2016 National ICT Australia (NICTA)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// ------------------------------------------------------------------------
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//! \addtogroup op_inv_gen
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//! @{
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class op_inv_gen_default
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: public traits_op_default
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{
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public:
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template<typename T1>
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inline static void apply(Mat<typename T1::elem_type>& out, const Op<T1,op_inv_gen_default>& in);
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template<typename T1>
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inline static bool apply_direct(Mat<typename T1::elem_type>& out, const Base<typename T1::elem_type,T1>& expr, const char* caller_sig);
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};
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class op_inv_gen_full
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: public traits_op_default
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{
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public:
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template<const uword row, const uword col>
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struct pos
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{
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static constexpr uword n2 = row + col*2;
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static constexpr uword n3 = row + col*3;
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};
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template<typename T1>
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inline static void apply(Mat<typename T1::elem_type>& out, const Op<T1,op_inv_gen_full>& in);
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template<typename T1, const bool has_user_flags = true>
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inline static bool apply_direct(Mat<typename T1::elem_type>& out, const Base<typename T1::elem_type,T1>& expr, const char* caller_sig, const uword flags);
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template<typename eT>
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arma_cold inline static bool apply_tiny_2x2(Mat<eT>& X);
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template<typename eT>
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arma_cold inline static bool apply_tiny_3x3(Mat<eT>& X);
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};
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template<typename T>
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struct op_inv_gen_state
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{
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uword size = uword(0);
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T rcond = T(0);
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bool is_diag = false;
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bool is_sym = false;
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};
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class op_inv_gen_rcond
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: public traits_op_default
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{
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public:
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template<typename T1>
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inline static bool apply_direct(Mat<typename T1::elem_type>& out_inv, op_inv_gen_state<typename T1::pod_type>& out_state, const Base<typename T1::elem_type,T1>& expr);
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};
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namespace inv_opts
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{
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struct opts
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{
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const uword flags;
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inline constexpr explicit opts(const uword in_flags);
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inline const opts operator+(const opts& rhs) const;
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};
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inline
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constexpr
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opts::opts(const uword in_flags)
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: flags(in_flags)
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{}
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inline
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const opts
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opts::operator+(const opts& rhs) const
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{
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const opts result( flags | rhs.flags );
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return result;
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}
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// The values below (eg. 1u << 1) are for internal Armadillo use only.
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// The values can change without notice.
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static constexpr uword flag_none = uword(0 );
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static constexpr uword flag_fast = uword(1u << 0);
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static constexpr uword flag_tiny = uword(1u << 0); // deprecated
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static constexpr uword flag_allow_approx = uword(1u << 1);
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static constexpr uword flag_likely_sympd = uword(1u << 2); // deprecated
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static constexpr uword flag_no_sympd = uword(1u << 3); // deprecated
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static constexpr uword flag_no_ugly = uword(1u << 4);
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struct opts_none : public opts { inline constexpr opts_none() : opts(flag_none ) {} };
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struct opts_fast : public opts { inline constexpr opts_fast() : opts(flag_fast ) {} };
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struct opts_tiny : public opts { inline constexpr opts_tiny() : opts(flag_tiny ) {} };
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struct opts_allow_approx : public opts { inline constexpr opts_allow_approx() : opts(flag_allow_approx) {} };
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struct opts_likely_sympd : public opts { inline constexpr opts_likely_sympd() : opts(flag_likely_sympd) {} };
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struct opts_no_sympd : public opts { inline constexpr opts_no_sympd() : opts(flag_no_sympd ) {} };
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struct opts_no_ugly : public opts { inline constexpr opts_no_ugly() : opts(flag_no_ugly ) {} };
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static constexpr opts_none none;
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static constexpr opts_fast fast;
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static constexpr opts_tiny tiny;
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static constexpr opts_allow_approx allow_approx;
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static constexpr opts_likely_sympd likely_sympd;
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static constexpr opts_no_sympd no_sympd;
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static constexpr opts_no_ugly no_ugly;
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}
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//! @}
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