#!/bin/bash
: ${t=./minop}
set -ve
diff - <($t 53 37) <<<37
diff - <($t 37 53) <<<37
diff - <($t 5 37) <<<5
diff - <($t 37 5) <<<5
diff - <($t 5 -37) <<<-37
diff - <($t 37 -5) <<<-5
diff - <($t -37 5) <<<-37