96 lines
3.2 KiB
Fortran
96 lines
3.2 KiB
Fortran
! Copyright (C) 2003-2018 Free Software Foundation, Inc.
|
|
! Contributed by Kejia Zhao <kejia_zh@yahoo.com.cn>
|
|
!
|
|
!This file is part of the GNU Fortran 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 3 of the License, or (at your option) any later version.
|
|
!
|
|
!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.
|
|
!
|
|
!Under Section 7 of GPL version 3, you are granted additional
|
|
!permissions described in the GCC Runtime Library Exception, version
|
|
!3.1, as published by the Free Software Foundation.
|
|
!
|
|
!You should have received a copy of the GNU General Public License and
|
|
!a copy of the GCC Runtime Library Exception along with this program;
|
|
!see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
!<http://www.gnu.org/licenses/>.
|
|
|
|
function _gfortran_selected_real_kind2008 (p, r, rdx)
|
|
implicit none
|
|
integer, optional, intent (in) :: p, r, rdx
|
|
integer :: _gfortran_selected_real_kind2008
|
|
integer :: i, p2, r2, radix2
|
|
logical :: found_p, found_r, found_radix
|
|
! Real kind_precision_range table
|
|
type :: real_info
|
|
integer :: kind
|
|
integer :: precision
|
|
integer :: range
|
|
integer :: radix
|
|
end type real_info
|
|
|
|
include "selected_real_kind.inc"
|
|
|
|
_gfortran_selected_real_kind2008 = 0
|
|
p2 = 0
|
|
r2 = 0
|
|
radix2 = 0
|
|
found_p = .false.
|
|
found_r = .false.
|
|
found_radix = .false.
|
|
|
|
if (present (p)) p2 = p
|
|
if (present (r)) r2 = r
|
|
if (present (rdx)) radix2 = rdx
|
|
|
|
! Assumes each type has a greater precision and range than previous one.
|
|
|
|
do i = 1, c
|
|
if (p2 <= real_infos (i) % precision) found_p = .true.
|
|
if (r2 <= real_infos (i) % range) found_r = .true.
|
|
if (radix2 <= real_infos (i) % radix) found_radix = .true.
|
|
|
|
if (p2 <= real_infos (i) % precision &
|
|
.and. r2 <= real_infos (i) % range &
|
|
.and. radix2 <= real_infos (i) % radix) then
|
|
_gfortran_selected_real_kind2008 = real_infos (i) % kind
|
|
return
|
|
end if
|
|
end do
|
|
|
|
if (found_radix .and. found_r .and. .not. found_p) then
|
|
_gfortran_selected_real_kind2008 = -1
|
|
elseif (found_radix .and. found_p .and. .not. found_r) then
|
|
_gfortran_selected_real_kind2008 = -2
|
|
elseif (found_radix .and. .not. found_p .and. .not. found_r) then
|
|
_gfortran_selected_real_kind2008 = -3
|
|
elseif (found_radix) then
|
|
_gfortran_selected_real_kind2008 = -4
|
|
else
|
|
_gfortran_selected_real_kind2008 = -5
|
|
end if
|
|
end function _gfortran_selected_real_kind2008
|
|
|
|
function _gfortran_selected_real_kind (p, r)
|
|
implicit none
|
|
integer, optional, intent (in) :: p, r
|
|
integer :: _gfortran_selected_real_kind
|
|
|
|
interface
|
|
function _gfortran_selected_real_kind2008 (p, r, rdx)
|
|
implicit none
|
|
integer, optional, intent (in) :: p, r, rdx
|
|
integer :: _gfortran_selected_real_kind2008
|
|
end function _gfortran_selected_real_kind2008
|
|
end interface
|
|
|
|
_gfortran_selected_real_kind = _gfortran_selected_real_kind2008 (p, r)
|
|
end function
|