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, 5 insertions, 5 deletions

diff --git a/sysdeps/ieee754/ldbl-128/k_cosl.c b/sysdeps/ieee754/ldbl-128/k_cosl.c
index 3985b1225b..8863d2c27d 100644
--- a/sysdeps/ieee754/ldbl-128/k_cosl.c
+++ b/sysdeps/ieee754/ldbl-128/k_cosl.c
@@ -20,7 +20,7 @@
 #include <math.h>
 #include <math_private.h>
 
-static const long double c[] = {
+static const _Float128 c[] = {
 #define ONE c[0]
  1.00000000000000000000000000000000000E+00L, /* 3fff0000000000000000000000000000 */
 
@@ -74,12 +74,12 @@ static const long double c[] = {
 #define SINCOSL_COS_LO 1
 #define SINCOSL_SIN_HI 2
 #define SINCOSL_SIN_LO 3
-extern const long double __sincosl_table[];
+extern const _Float128 __sincosl_table[];
 
-long double
-__kernel_cosl(long double x, long double y)
+_Float128
+__kernel_cosl(_Float128 x, _Float128 y)
 {
-  long double h, l, z, sin_l, cos_l_m1;
+  _Float128 h, l, z, sin_l, cos_l_m1;
   int64_t ix;
   u_int32_t tix, hix, index;
   GET_LDOUBLE_MSW64 (ix, x);