193 lines
3.5 KiB
C++
193 lines
3.5 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 fn_chi2rnd
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//! @{
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arma_warn_unused
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inline
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double
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chi2rnd(const double df)
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{
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arma_debug_sigprint();
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op_chi2rnd_varying_df<double> generator;
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return generator(df);
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}
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template<typename eT>
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arma_warn_unused
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inline
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typename arma_real_only<eT>::result
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chi2rnd(const eT df)
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{
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arma_debug_sigprint();
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if(is_fp16<eT>::yes)
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{
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// std::chi_squared_distribution is undefined for types other than float, double, and long double
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op_chi2rnd_varying_df<float> generator;
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return eT(generator(df));
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}
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else
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{
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op_chi2rnd_varying_df<eT> generator;
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return generator(df);
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}
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}
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template<typename T1>
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arma_warn_unused
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inline
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typename
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enable_if2
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<
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(is_arma_type<T1>::value && is_real<typename T1::elem_type>::value),
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const Op<T1, op_chi2rnd>
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>::result
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chi2rnd(const T1& expr)
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{
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arma_debug_sigprint();
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return Op<T1, op_chi2rnd>(expr);
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}
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template<typename obj_type>
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arma_warn_unused
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inline
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typename
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enable_if2
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<
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(is_Mat<obj_type>::value && is_real<typename obj_type::elem_type>::value),
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obj_type
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>::result
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chi2rnd(const typename obj_type::elem_type df, const uword n_rows, const uword n_cols)
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{
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arma_debug_sigprint();
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if(is_Col<obj_type>::value)
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{
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arma_conform_check( (n_cols != 1), "chi2rnd(): incompatible size" );
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}
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else
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if(is_Row<obj_type>::value)
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{
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arma_conform_check( (n_rows != 1), "chi2rnd(): incompatible size" );
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}
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obj_type out(n_rows, n_cols, arma_nozeros_indicator());
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op_chi2rnd::fill_constant_df(out, df);
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return out;
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}
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template<typename obj_type>
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arma_warn_unused
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inline
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typename
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enable_if2
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<
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(is_Mat<obj_type>::value && is_real<typename obj_type::elem_type>::value),
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obj_type
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>::result
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chi2rnd(const typename obj_type::elem_type df, const SizeMat& s)
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{
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arma_debug_sigprint();
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return chi2rnd<obj_type>(df, s.n_rows, s.n_cols);
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}
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template<typename obj_type>
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arma_warn_unused
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inline
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typename
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enable_if2
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<
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(is_Mat<obj_type>::value && is_real<typename obj_type::elem_type>::value),
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obj_type
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>::result
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chi2rnd(const typename obj_type::elem_type df, const uword n_elem)
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{
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arma_debug_sigprint();
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if(is_Row<obj_type>::value)
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{
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return chi2rnd<obj_type>(df, 1, n_elem);
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}
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else
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{
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return chi2rnd<obj_type>(df, n_elem, 1);
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}
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}
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arma_warn_unused
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inline
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mat
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chi2rnd(const double df, const uword n_rows, const uword n_cols)
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{
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arma_debug_sigprint();
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return chi2rnd<mat>(df, n_rows, n_cols);
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}
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arma_warn_unused
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inline
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mat
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chi2rnd(const double df, const SizeMat& s)
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{
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arma_debug_sigprint();
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return chi2rnd<mat>(df, s.n_rows, s.n_cols);
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}
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arma_warn_unused
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inline
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vec
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chi2rnd(const double df, const uword n_elem)
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{
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arma_debug_sigprint();
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return chi2rnd<vec>(df, n_elem, 1);
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}
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//! @}
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