bug#13419: make 'eabs' act more like a function

[Paul Eggert]

On 01/12/2013 05:25 AM, Stefan Monnier wrote:
> Do you really consider this code cleaner?

The implementation's worse, but the use is nicer,
since eabs is guaranteed to evaluate its argument just once.

Anyway, here's a simpler implementation that also evaluates
its argument just once: would you prefer this?

  #define eabs(x) imaxabs (x)

(This is shorter and simpler than what's in Emacs now.)

I've attached a complete patch based on this idea.
It incorporates Eli's suggestion to implement imaxabs
via abs rather than labs on 32-bit MS-Windows.  (The
idea is to avoid the need to build imaxabs.o on Windows.)

eabs-imaxabs.txt
Description: Text document