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68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
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/* Implementation of the FTELL intrinsic.
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Copyright (C) 2005 Free Software Foundation, Inc.
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Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with libgfortran; see the file COPYING. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "config.h"
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#include "libgfortran.h"
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#include <string.h>
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#include "../io/io.h"
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extern size_t PREFIX(ftell) (int *);
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export_proto_np(PREFIX(ftell));
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size_t
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PREFIX(ftell) (int * unit)
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{
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gfc_unit * u = find_unit (*unit);
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if (u == NULL)
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return ((size_t) -1);
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else
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return ((size_t) stream_offset (u->s));
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}
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#define FTELL_SUB(kind) \
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extern void ftell_i ## kind ## _sub (int *, GFC_INTEGER_ ## kind *); \
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export_proto(ftell_i ## kind ## _sub); \
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void \
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ftell_i ## kind ## _sub (int * unit, GFC_INTEGER_ ## kind * offset) \
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{ \
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gfc_unit * u = find_unit (*unit); \
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if (u == NULL) \
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*offset = -1; \
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else \
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*offset = stream_offset (u->s); \
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}
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FTELL_SUB(1)
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FTELL_SUB(2)
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FTELL_SUB(4)
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FTELL_SUB(8)
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