1 ! Copyright 2003, 2004 Free Software Foundation, Inc.
2 ! Contributed by Kejia Zhao <kejia_zh@yahoo.com.cn>
4 !This file is part of the GNU Fortran 95 runtime library (libgfor).
6 !GNU libgfor is free software; you can redistribute it and/or
7 !modify it under the terms of the GNU Lesser General Public
8 !License as published by the Free Software Foundation; either
9 !version 2.1 of the License, or (at your option) any later version.
11 !GNU libgfor is distributed in the hope that it will be useful,
12 !but WITHOUT ANY WARRANTY; without even the implied warranty of
13 !MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 !GNU Lesser General Public License for more details.
16 !You should have received a copy of the GNU Lesser General Public
17 !License along with libgfor; see the file COPYING. If not,
18 !write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 !Boston, MA 02110-1301, USA.
22 function _gfortran_selected_real_kind (p, r)
24 integer, optional, intent (in) :: p, r
25 integer :: _gfortran_selected_real_kind
27 logical :: found_p, found_r
28 ! Real kind_precision_range table
35 include "selected_real_kind.inc"
37 _gfortran_selected_real_kind = 0
43 if (present (p)) p2 = p
44 if (present (r)) r2 = r
46 ! Assumes each type has a greater precision and range than previous one.
49 if (p2 <= real_infos (i) % precision) found_p = .true.
50 if (r2 <= real_infos (i) % range) found_r = .true.
51 if (found_p .and. found_r) then
52 _gfortran_selected_real_kind = real_infos (i) % kind
57 if (.not. (found_p)) _gfortran_selected_real_kind = _gfortran_selected_real_kind - 1
58 if (.not. (found_r)) _gfortran_selected_real_kind = _gfortran_selected_real_kind - 2