ldbl-128: Rename 'long double' to '_Float128'

Add a layer of macro indirection for long double files
which need to be built using another typename.  Likewise,
add the L(num) macro used in a later patch to override
real constants.

These macros are only defined through the ldbl-128
math_ldbl.h header, thereby implicitly restricting
these macros to machines which back long double
with an IEEE binary128 format.

Likewise, appropriate changes are made for the few
files which indirectly include such ldbl-128 files.

These changes produce identical binaries for s390x,
aarch64, and ppc64.

1 files changed, 4 insertions, 4 deletions

diff --git a/sysdeps/ieee754/ldbl-128/s_remquol.c b/sysdeps/ieee754/ldbl-128/s_remquol.c
index 7356f5f4ef..f22026d35a 100644
--- a/sysdeps/ieee754/ldbl-128/s_remquol.c
+++ b/sysdeps/ieee754/ldbl-128/s_remquol.c
@@ -23,11 +23,11 @@
 #include <math_private.h>
 
 
-static const long double zero = 0.0;
+static const _Float128 zero = 0.0;
 
 
-long double
-__remquol (long double x, long double y, int *quo)
+_Float128
+__remquol (_Float128 x, _Float128 y, int *quo)
 {
   int64_t hx,hy;
   u_int64_t sx,lx,ly,qs;
@@ -87,7 +87,7 @@ __remquol (long double x, long double y, int *quo)
     }
   else
     {
-      long double y_half = 0.5L * y;
+      _Float128 y_half = 0.5L * y;
       if (x > y_half)
 	{
 	  x -= y;