1  /* Skipping input from a FILE stream.
       2     Copyright (C) 2007-2023 Free Software Foundation, Inc.
       3  
       4     This file is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU Lesser General Public License as
       6     published by the Free Software Foundation; either version 2.1 of the
       7     License, or (at your option) any later version.
       8  
       9     This file is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12     GNU Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  #include <stddef.h>
      18  #include <stdio.h>
      19  
      20  #ifdef __cplusplus
      21  extern "C" {
      22  #endif
      23  
      24  /* Assuming the stream STREAM is open for reading:
      25  
      26     Read and discard OFFSET bytes from STREAM.
      27  
      28     freadseek (STREAM, OFFSET) is the same as
      29     fseek (STREAM, OFFSET, SEEK_CUR), except that the latter does not work
      30     on non-seekable input streams (such as pipes).
      31  
      32     Upon success, return 0.
      33     Upon premature end of stream, return 0 (like fseek does).
      34     Upon error, set the error indicator in the stream and return EOF.
      35  
      36     STREAM must not be wide-character oriented.  */
      37  
      38  extern int freadseek (FILE *stream, size_t offset);
      39  
      40  #ifdef __cplusplus
      41  }
      42  #endif