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