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Annotation of GNUtools/libg++/libio/ioignore.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: 
        !            27: int
        !            28: _IO_ignore(fp, n)
        !            29:      register _IO_FILE *fp;
        !            30:      _IO_size_t n;
        !            31: {
        !            32:   register _IO_size_t more = n;
        !            33:   for (;;)
        !            34:     {
        !            35:       _IO_size_t count = fp->_IO_read_end - fp->_IO_read_ptr;
        !            36:       if (count > 0)
        !            37:        {
        !            38:          if (count > more)
        !            39:            count = more;
        !            40:          fp->_IO_read_ptr += count;
        !            41:          more -= count;
        !            42:        }
        !            43:       if (more == 0 || __underflow(fp) == EOF)
        !            44:        break;
        !            45:     }
        !            46:   return n - more;
        !            47: }

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