> However, could you test also replacing the two floatformat_from_double
> calls in convert_doublest_to_floatformat?

Sure. Follows the patch.

The results still show up correctly, casting doubles to long doubles and
long doubles to doubles.

===> Output <===
(gdb) set $ld=(long double)1.2
(gdb) p $ld
$8 = 1.1999999999999999555910790149937384
(gdb) p (double) $ld
$9 = 1.2

(gdb) set $ld=(double)1.2
(gdb) p $ld
$12 = 1.2
(gdb) p (long double) $ld
$13 = 1.1999999999999999555910790149937384


Regards,
-- 
Luis Machado
Software Engineer 
IBM Linux Technology Center