text: /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **
   *  This file is part of cstl library
   *  Copyright (C) 2011 Avinash Dongre ( dongre.avinash@gmail.com )
   *  Copyright (C) 2018 ssrlive ( ssrlivebox@gmail.com )
   * 
   *  Permission is hereby granted, free of charge, to any person obtaining a copy
   *  of this software and associated documentation files (the "Software"), to deal
   *  in the Software without restriction, including without limitation the rights
   *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   *  copies of the Software, and to permit persons to whom the Software is
   *  furnished to do so, subject to the following conditions:
   * 
   *  The above copyright notice and this permission notice shall be included in
   *  all copies or substantial portions of the Software.
   * 
   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   *  THE SOFTWARE.
   ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
  
  #ifndef _C_DEQUE_H_
  #define _C_DEQUE_H_
  
  struct cstl_deque;
  
  extern struct cstl_deque* cstl_deque_new( size_t deq_size , cstl_compare fn_c, cstl_destroy fn_d);
  extern size_t cstl_deque_count(struct cstl_deque *deque);
  extern cstl_error     cstl_deque_push_back (struct cstl_deque* pDeq, void* elem, size_t elem_size);
  extern cstl_error     cstl_deque_push_front(struct cstl_deque* pDeq, void* elem, size_t elem_size);
  
  extern const void *   cstl_deque_front(struct cstl_deque* pDeq);
  extern const void *   cstl_deque_back(struct cstl_deque* pDeq);
  extern cstl_error     cstl_deque_pop_back  (struct cstl_deque* pDeq);
  extern cstl_error     cstl_deque_pop_front (struct cstl_deque* pDeq);
  extern cstl_bool      cstl_deque_empty     (struct cstl_deque* pDeq);
  extern size_t         cstl_deque_size ( struct cstl_deque* pDeq);
  extern cstl_error     cstl_deque_delete ( struct cstl_deque* pDeq);
  extern const void *   cstl_deque_element_at(struct cstl_deque* pDeq, size_t index);
  
  extern struct cstl_iterator* cstl_deque_new_iterator(struct cstl_deque* pDeq);
  extern void cstl_deque_delete_iterator ( struct cstl_iterator* pItr);
  
  #endif
  