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}\}