[PATCH] Use builtins in signbit implementation

[Joseph Myers]

On Fri, 4 Sep 2015, Wilco Dijkstra wrote:

> ChangeLog: 
> 2015-08-20  Wilco Dijkstra  <wdijkstr@arm.com>
> 	
> 	* sysdeps/ieee754/dbl-64/s_signbit.c (__signbit):
> 	Use __builtin_signbit. 	
> 	* sysdeps/ieee754/flt-32/s_signbitf.c (__signbitf):
> 	Use __builtin_signbitf.
> 	* sysdeps/ieee754/ldbl-128/s_signbitl.c (__signbitl):
> 	Use __builtin_signbitl.	
> 	* sysdeps/ieee754/ldbl-96/s_signbitl.c (__signbitl): Likewise.

OK with the ChangeLog fixed to include the ldbl-128ibm changes as well.

-- 
Joseph S. Myers
joseph@codesourcery.com