dnl ../doc/m4.texinfo:2839: Origin of test
eval(666, 10)
dnl @result{}666
eval(666, 11)
dnl @result{}556
eval(666, 6)
dnl @result{}3030
eval(666, 6, 10)
dnl @result{}0000003030
eval(-666, 6, 10)
dnl @result{}-000003030