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Annotation of GNUtools/libg++/libio/iofsetpos.c, revision 1.1.1.1

1.1       root        1: /* 
                      2: Copyright (C) 1993 Free Software Foundation
                      3: 
                      4: This file is part of the GNU IO Library.  This library is free
                      5: software; you can redistribute it and/or modify it under the
                      6: terms of the GNU General Public License as published by the
                      7: Free Software Foundation; either version 2, or (at your option)
                      8: any later version.
                      9: 
                     10: This library is distributed in the hope that it will be useful,
                     11: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     13: GNU General Public License for more details.
                     14: 
                     15: You should have received a copy of the GNU General Public License
                     16: along with GNU CC; see the file COPYING.  If not, write to
                     17: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
                     18: 
                     19: As a special exception, if you link this library with files
                     20: compiled with a GNU compiler to produce an executable, this does not cause
                     21: the resulting executable to be covered by the GNU General Public License.
                     22: This exception does not however invalidate any other reasons why
                     23: the executable file might be covered by the GNU General Public License. */
                     24: 
                     25: #include <libioP.h>
                     26: #include <errno.h>
                     27: 
                     28: int
                     29: _IO_fsetpos(fp, posp)
                     30:      _IO_FILE* fp;
                     31:      const _IO_fpos_t *posp;
                     32: {
                     33:   COERCE_FILE(fp);
                     34:   if (_IO_seekpos(fp, *posp, 0) == _IO_pos_BAD)
                     35:     {
                     36:       /*ANSI explicily requires setting errno to a positive value on failure.*/
                     37: #ifdef EIO
                     38:       if (errno == 0)
                     39:        errno = EIO;
                     40: #endif
                     41:       return EOF;
                     42:     }
                     43:   return 0;
                     44: }

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