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! Copyright (C) 2003-2020 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
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