#   This program 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.
#
#   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
#
# a lot of this is technically undefined behavior due to signed 64-bit
# integer overflow, but we're testing exception handling here

intmax_max=$((2**63 - 1))
intmax_min1=$((2**63))
intmax_min2=$((-2**63))

case $intmax_max in
9223372036854775807)	;;
*)		echo "warning: your machine does not support 64-bit arithmetic using intmax_t" 2>&1 ;;
esac

# these are actually the same
echo $(( $intmax_min1 % -1 ))
echo $(( $intmax_min2 % -1 ))

echo $(( $intmax_max % -1 ))

lvalue=$intmax_min1
(( lvalue%= -1 ))
echo $lvalue

lvalue=$intmax_min2
(( lvalue%= -1 ))
echo $lvalue

lvalue=$intmax_max
(( lvalue%= -1 ))
echo $lvalue

# and these
echo $(( $intmax_min1 / -1 ))
echo $(( $intmax_min2 / -1 ))

lvalue=$intmax_min1
(( lvalue /= -1 ))
echo $lvalue

lvalue=$intmax_min2
(( lvalue /= -1 ))
echo $lvalue

echo $(( $intmax_min1 * -1 ))
echo $(( $intmax_min2 * -1 ))

lvalue=$intmax_min1
(( lvalue *= -1 ))
echo $lvalue

lvalue=$intmax_min2
(( lvalue *= -1 ))
echo $lvalue

echo $(( -${intmax_min1} ))
echo $(( -${intmax_min2} ))

foo1=$(( $intmax_max - 2 ))

eval echo \{${foo1}..${intmax_max}\}