dnl "m4.texinfo": 2267: Origin here
eval(-3 * 5)
dnl @result{}-15
eval(index(`Hello world', `llo') >= 0)
dnl @result{}1
define(`square', `eval(($1)^2)')
dnl @result{}
square(9)
dnl @result{}81
square(square(5)+1)
dnl @result{}676
define(`foo', `666')
dnl @result{}
eval(`foo'/6)
dnl @error{}m4: examples/51.eval: 14: bad expression in eval: foo/6
dnl @result{}
eval(foo/6)
dnl @result{}111
