// SPDX-License-Identifier: Apache-2.0
// 
// Copyright 2008-2016 Conrad Sanderson (https://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
// https://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 op_all
//! @{



template<typename T1>
inline
bool
op_all::all_vec_helper(const Base<typename T1::elem_type, T1>& X)
  {
  arma_debug_sigprint();
  
  typedef typename T1::elem_type eT;
  
  const Proxy<T1> P(X.get_ref());
  
  const uword n_elem = P.get_n_elem();
  
  uword count = 0;
  
  if(Proxy<T1>::use_at == false)
    {
    typename Proxy<T1>::ea_type Pea = P.get_ea();
    
    for(uword i=0; i<n_elem; ++i)
      {
      count += (Pea[i] != eT(0)) ? uword(1) : uword(0);
      }
    }
  else
    {
    const uword n_rows = P.get_n_rows();
    const uword n_cols = P.get_n_cols();
    
    for(uword col=0; col < n_cols; ++col)
    for(uword row=0; row < n_rows; ++row)
      {
      count += (P.at(row,col) != eT(0)) ? uword(1) : uword(0);
      }
    }
  
  // NOTE: for empty vectors it makes more sense to return false, but we need to return true for compatibility with Octave
  return (n_elem == count);
  }



template<typename eT>
inline
bool
op_all::all_vec_helper(const subview<eT>& X)
  {
  arma_debug_sigprint();
  
  const uword X_n_rows = X.n_rows;
  const uword X_n_cols = X.n_cols;
  
  uword count = 0;
  
  if(X_n_rows == 1)
    {
    for(uword col=0; col < X_n_cols; ++col)
      {
      count += (X.at(0,col) != eT(0)) ? uword(1) : uword(0);
      }
    }
  else
    {
    for(uword col=0; col < X_n_cols; ++col)
      {
      const eT* X_colmem = X.colptr(col);
      
      for(uword row=0; row < X_n_rows; ++row)
        {
        count += (X_colmem[row] != eT(0)) ? uword(1) : uword(0);
        }
      }
    }
  
  return (X.n_elem == count);
  }



template<typename T1>
inline
bool
op_all::all_vec_helper(const Op<T1, op_vectorise_col>& X)
  {
  arma_debug_sigprint();
  
  return op_all::all_vec_helper(X.m);
  }



template<typename T1, typename op_type>
inline
bool
op_all::all_vec_helper
  (
  const mtOp<uword, T1, op_type>& X,
  const typename arma_op_rel_only<op_type>::result*           junk1,
  const typename arma_not_cx<typename T1::elem_type>::result* junk2
  )
  {
  arma_debug_sigprint();
  arma_ignore(junk1);
  arma_ignore(junk2);
  
  typedef typename T1::elem_type eT;
  
  const eT val = X.aux;
  
  const Proxy<T1> P(X.m);
  
  const uword n_elem = P.get_n_elem();
  
  uword count = 0;
  
  if(Proxy<T1>::use_at == false)
    {
    typename Proxy<T1>::ea_type Pea = P.get_ea();
    
    for(uword i=0; i < n_elem; ++i)
      {
      const eT tmp = Pea[i];
      
           if(is_same_type<op_type, op_rel_lt_pre   >::yes)  { count += (val <  tmp) ? uword(1) : uword(0); }
      else if(is_same_type<op_type, op_rel_lt_post  >::yes)  { count += (tmp <  val) ? uword(1) : uword(0); }
      else if(is_same_type<op_type, op_rel_gt_pre   >::yes)  { count += (val >  tmp) ? uword(1) : uword(0); }
      else if(is_same_type<op_type, op_rel_gt_post  >::yes)  { count += (tmp >  val) ? uword(1) : uword(0); }
      else if(is_same_type<op_type, op_rel_lteq_pre >::yes)  { count += (val <= tmp) ? uword(1) : uword(0); }
      else if(is_same_type<op_type, op_rel_lteq_post>::yes)  { count += (tmp <= val) ? uword(1) : uword(0); }
      else if(is_same_type<op_type, op_rel_gteq_pre >::yes)  { count += (val >= tmp) ? uword(1) : uword(0); }
      else if(is_same_type<op_type, op_rel_gteq_post>::yes)  { count += (tmp >= val) ? uword(1) : uword(0); }
      else if(is_same_type<op_type, op_rel_eq       >::yes)  { count += (tmp == val) ? uword(1) : uword(0); }
      else if(is_same_type<op_type, op_rel_noteq    >::yes)  { count += (tmp != val) ? uword(1) : uword(0); }
      }
    }
  else
    {
    const uword n_rows = P.get_n_rows();
    const uword n_cols = P.get_n_cols();
    
    for(uword col=0; col < n_cols; ++col)
    for(uword row=0; row < n_rows; ++row)
      {
      const eT tmp = P.at(row,col);
      
           if(is_same_type<op_type, op_rel_lt_pre   >::yes)  { if(val <  tmp) { ++count; } }
      else if(is_same_type<op_type, op_rel_lt_post  >::yes)  { if(tmp <  val) { ++count; } }
      else if(is_same_type<op_type, op_rel_gt_pre   >::yes)  { if(val >  tmp) { ++count; } }
      else if(is_same_type<op_type, op_rel_gt_post  >::yes)  { if(tmp >  val) { ++count; } }
      else if(is_same_type<op_type, op_rel_lteq_pre >::yes)  { if(val <= tmp) { ++count; } }
      else if(is_same_type<op_type, op_rel_lteq_post>::yes)  { if(tmp <= val) { ++count; } }
      else if(is_same_type<op_type, op_rel_gteq_pre >::yes)  { if(val >= tmp) { ++count; } }
      else if(is_same_type<op_type, op_rel_gteq_post>::yes)  { if(tmp >= val) { ++count; } }
      else if(is_same_type<op_type, op_rel_eq       >::yes)  { if(tmp == val) { ++count; } }
      else if(is_same_type<op_type, op_rel_noteq    >::yes)  { if(tmp != val) { ++count; } }
      }
    }
  
  return (n_elem == count);
  }



template<typename T1, typename T2, typename glue_type>
inline
bool
op_all::all_vec_helper
  (
  const mtGlue<uword, T1, T2, glue_type>& X,
  const typename arma_glue_rel_only<glue_type>::result*       junk1,
  const typename arma_not_cx<typename T1::elem_type>::result* junk2,
  const typename arma_not_cx<typename T2::elem_type>::result* junk3
  )
  {
  arma_debug_sigprint();
  arma_ignore(junk1);
  arma_ignore(junk2);
  arma_ignore(junk3);
  
  typedef typename T1::elem_type eT1;
  typedef typename T2::elem_type eT2;
  
  typedef typename Proxy<T1>::ea_type ea_type1;
  typedef typename Proxy<T2>::ea_type ea_type2;
  
  const Proxy<T1> A(X.A);
  const Proxy<T2> B(X.B);
  
  arma_conform_assert_same_size(A, B, "relational operator");
  
  const uword n_elem = A.get_n_elem();
  
  uword count = 0;
  
  constexpr bool use_at = (Proxy<T1>::use_at || Proxy<T2>::use_at);
  
  if(use_at == false)
    {
    ea_type1 PA = A.get_ea();
    ea_type2 PB = B.get_ea();
    
    for(uword i=0; i<n_elem; ++i)
      {
      const eT1 tmp1 = PA[i];
      const eT2 tmp2 = PB[i];
      
           if(is_same_type<glue_type, glue_rel_lt    >::yes)  { count += (tmp1 <  tmp2) ? uword(1) : uword(0); }
      else if(is_same_type<glue_type, glue_rel_gt    >::yes)  { count += (tmp1 >  tmp2) ? uword(1) : uword(0); }
      else if(is_same_type<glue_type, glue_rel_lteq  >::yes)  { count += (tmp1 <= tmp2) ? uword(1) : uword(0); }
      else if(is_same_type<glue_type, glue_rel_gteq  >::yes)  { count += (tmp1 >= tmp2) ? uword(1) : uword(0); }
      else if(is_same_type<glue_type, glue_rel_eq    >::yes)  { count += (tmp1 == tmp2) ? uword(1) : uword(0); }
      else if(is_same_type<glue_type, glue_rel_noteq >::yes)  { count += (tmp1 != tmp2) ? uword(1) : uword(0); }
      else if(is_same_type<glue_type, glue_rel_and   >::yes)  { count += (tmp1 && tmp2) ? uword(1) : uword(0); }
      else if(is_same_type<glue_type, glue_rel_or    >::yes)  { count += (tmp1 || tmp2) ? uword(1) : uword(0); }
      }
    }
  else
    {
    const uword n_rows = A.get_n_rows();
    const uword n_cols = A.get_n_cols();
    
    for(uword col=0; col < n_cols; ++col)
    for(uword row=0; row < n_rows; ++row)
      {
      const eT1 tmp1 = A.at(row,col);
      const eT2 tmp2 = B.at(row,col);
      
           if(is_same_type<glue_type, glue_rel_lt    >::yes)  { if(tmp1 <  tmp2) { ++count; } }
      else if(is_same_type<glue_type, glue_rel_gt    >::yes)  { if(tmp1 >  tmp2) { ++count; } }
      else if(is_same_type<glue_type, glue_rel_lteq  >::yes)  { if(tmp1 <= tmp2) { ++count; } }
      else if(is_same_type<glue_type, glue_rel_gteq  >::yes)  { if(tmp1 >= tmp2) { ++count; } }
      else if(is_same_type<glue_type, glue_rel_eq    >::yes)  { if(tmp1 == tmp2) { ++count; } }
      else if(is_same_type<glue_type, glue_rel_noteq >::yes)  { if(tmp1 != tmp2) { ++count; } }
      else if(is_same_type<glue_type, glue_rel_and   >::yes)  { if(tmp1 && tmp2) { ++count; } }
      else if(is_same_type<glue_type, glue_rel_or    >::yes)  { if(tmp1 || tmp2) { ++count; } }
      }
    }
  
  return (n_elem == count);
  }



template<typename T1>
inline
bool
op_all::all_vec(T1& X)
  {
  arma_debug_sigprint();
  
  return op_all::all_vec_helper(X);
  }



template<typename eT>
inline
void
op_all::apply_mat_noalias(Mat<uword>& out, const Mat<eT>& X, const uword dim)
  {
  arma_debug_sigprint();
  
  const uword n_rows = X.n_rows;
  const uword n_cols = X.n_cols;
  
  if(dim == 0)  // traverse rows (ie. process each column)
    {
    out.zeros(1, n_cols);
    
    if(out.n_elem == 0)  { return; }
    
    uword* out_mem = out.memptr();
    
    for(uword col=0; col < n_cols; ++col)
      {
      const eT* colmem = X.colptr(col);
      
      uword count = 0;
      
      for(uword row=0; row < n_rows; ++row)
        {
        count += (colmem[row] != eT(0)) ? uword(1) : uword(0);
        }
      
      out_mem[col] = (n_rows == count) ? uword(1) : uword(0); 
      }
    }
  else
    {
    out.zeros(n_rows, 1);
    
    uword* out_mem = out.memptr();
    
    // internal dual use of 'out': keep the counts for each row
    
    for(uword col=0; col < n_cols; ++col)
      {
      const eT* colmem = X.colptr(col);
      
      for(uword row=0; row < n_rows; ++row)
        {
        out_mem[row] += (colmem[row] != eT(0)) ? uword(1) : uword(0);
        }
      }
    
    // see what the counts tell us
    
    for(uword row=0; row < n_rows; ++row)
      {
      out_mem[row] = (n_cols == out_mem[row]) ? uword(1) : uword(0);
      }
    }
  }



template<typename T1>
inline
void
op_all::apply_proxy_noalias(Mat<uword>& out, const Proxy<T1>& P, const uword dim)
  {
  arma_debug_sigprint();
  
  typedef typename Proxy<T1>::elem_type eT;
  
  const uword n_rows = P.get_n_rows();
  const uword n_cols = P.get_n_cols();
  
  if(dim == 0)  // traverse rows (ie. process each column)
    {
    out.zeros(1, n_cols);
    
    if(out.n_elem == 0)  { return; }
    
    uword* out_mem = out.memptr();
    
    for(uword col=0; col < n_cols; ++col)
      {
      uword count = 0;
      
      for(uword row=0; row < n_rows; ++row)
        {
        if(P.at(row,col) != eT(0))  { ++count; }
        }
      
      out_mem[col] = (n_rows == count) ? uword(1) : uword(0); 
      }
    }
  else
    {
    out.zeros(n_rows, 1);
    
    uword* out_mem = out.memptr();
    
    // internal dual use of 'out': keep the counts for each row
    
    for(uword col=0; col < n_cols; ++col)
    for(uword row=0; row < n_rows; ++row)
      {
      if(P.at(row,col) != eT(0))  { ++out_mem[row]; }
      }
    
    // see what the counts tell us
    
    for(uword row=0; row < n_rows; ++row)
      {
      out_mem[row] = (n_cols == out_mem[row]) ? uword(1) : uword(0);
      }
    }
  }



template<typename T1>
inline
void
op_all::apply(Mat<uword>& out, const mtOp<uword, T1, op_all>& X)
  {
  arma_debug_sigprint();
  
  const uword dim = X.aux_uword_a;
  
  if( (is_Mat<T1>::value) || (is_Mat<typename Proxy<T1>::stored_type>::value) || (arma_config::openmp && Proxy<T1>::use_mp) )
    {
    const quasi_unwrap<T1> U(X.m);
    
    if(U.is_alias(out) == false)
      {
      op_all::apply_mat_noalias(out, U.M, dim);
      }
    else
      {
      Mat<uword> tmp;
      
      op_all::apply_mat_noalias(tmp, U.M, dim);
      
      out.steal_mem(tmp);
      }
    }
  else
    {
    const Proxy<T1> P(X.m);
    
    if(P.is_alias(out) == false)
      {
      op_all::apply_proxy_noalias(out, P, dim);
      }
    else
      {
      Mat<uword> tmp;
      
      op_all::apply_proxy_noalias(tmp, P, dim);
      
      out.steal_mem(tmp);
      }
    }
  }



//! @}
