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