Move float128 inlines from sysdeps/generic/math_private.h to include/math.h.

Continuing the cleanup of math_private.h, with a view to it becoming
the header for the APIs defined therein and not also a header with
inline variants of math.h APIs, this patch moves inline definitions of
__isinff128 and fabsf128 to include/math.h, so that any users of
math.h in glibc automatically get the optimized functions rather than
quietly missing them if they do not also include math_private.h.

Tested for x86_64 and x86, and with build-many-glibcs.py with GCC 6.
There are changes to installed stripped libc.so on configurations with
distinct _Float128, because of __printf_fp_l code that now gets the
__isinff128 inline where previously it called the out-of-line
function because of the lack of a math_private.h call.  It seems
appropriate that this code does get the inline (as it would
automatically with GCC 7 and later when the built-in function is used)
rather than being the only place in glibc that does not.

	* sysdeps/generic/math_private.h
	[__HAVE_DISTINCT_FLOAT128 && !__GNUC_PREREQ (7, 0)] (__isinff128):
	Move this inline function ....
	[__HAVE_DISTINCT_FLOAT128] (fabsf128): And this one ....
	* include/math.h [!_ISOMAC]: To here....

1 files changed, 0 insertions, 23 deletions

diff --git a/sysdeps/generic/math_private.h b/sysdeps/generic/math_private.h
index 220367b..c79b65f 100644
--- a/sysdeps/generic/math_private.h
+++ b/sysdeps/generic/math_private.h
@@ -222,29 +222,6 @@ do {								\
 # undef _Mdouble_
 #endif
 
-#if __HAVE_DISTINCT_FLOAT128
-
-/* __builtin_isinf_sign is broken in GCC < 7 for float128.  */
-# if ! __GNUC_PREREQ (7, 0)
-#  include <ieee754_float128.h>
-extern inline int
-__isinff128 (_Float128 x)
-{
-  int64_t hx, lx;
-  GET_FLOAT128_WORDS64 (hx, lx, x);
-  lx |= (hx & 0x7fffffffffffffffLL) ^ 0x7fff000000000000LL;
-  lx |= -lx;
-  return ~(lx >> 63) & (hx >> 62);
-}
-# endif
-
-extern inline _Float128
-fabsf128 (_Float128 x)
-{
-  return __builtin_fabsf128 (x);
-}
-#endif
-
 
 
 /* Prototypes for functions of the IBM Accurate Mathematical Library.  */