[PATCH] support: Add TEST_COMPARE macro

[Paul Eggert]

On 12/04/2017 08:35 AM, Florian Weimer wrote:
> +      __left_converts_to_right = __left_is_unsigned                     \
> +        && sizeof (__left_value) < sizeof (__right_value),              \

Thanks, this implementation looks good. Two minor style issues. First, 
please indent this decl according to the usual glibc style, where 
multiline expressions are parenthesized (or perhaps you can put the " = 
" on the next line). Second, I suggest changing the name from 
"__left_converts_to_right" to "__unsigned_left_converts_to_wider", as 
this more-accurately describes the expression (as there are cases where 
the left's value is converted to the right's type but 
__left_converts_to_right is false). Similarly for 
__right_converts_to_left of course.