[PATCH] Remove tacit double usage in ldbl-128

[Paul E. Murphy]

On 08/02/2016 01:57 PM, Paul E. Murphy wrote:
> There is quiet truncation to double arithmetic in several
> files.  I noticed them when building ldbl-128 in a
> soft-fp context.  This did not change any test results.
> 
> 	* sysdeps/ieee754/ldbl-128/k_tanl.c (__kernal_tanl):
> 	Use fabsl instead of fabs.
> 	* sysdeps/ieee754/ldbl-128/s_logbl.c (__logbl):
> 	Likewise.
> 	* sysdeps/ieee754/ldbl-128/s_atanl.c (__kernel_tanl):
> 	Add long double suffix to constant to ensure proper
> 	promotion to long double.

Committed as cad1d60.