From 051be01f6b41a1466b07ae4bd7f5894a8ec5fe67 Mon Sep 17 00:00:00 2001
From: "Gabriel F. T. Gomes" <gabrielftg@linux.ibm.com>
Date: Thu, 11 Jul 2019 11:48:28 -0300
Subject: powerpc64le: Enable support for IEEE long double

On platforms where long double may have two different formats, i.e.: the
same format as double (64-bits) or something else (128-bits), building
with -mlong-double-128 is the default and function calls in the user
program match the name of the function in Glibc.  When building with
-mlong-double-64, Glibc installed headers redirect such calls to the
appropriate function.

Likewise, the internals of glibc are now built against IEEE long double.
However, the only (minimally) notable usage of long double is difftime.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
---
 NEWS | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'NEWS')

diff --git a/NEWS b/NEWS
index e60f83a..141078c 100644
--- a/NEWS
+++ b/NEWS
@@ -18,6 +18,11 @@ Major new features:
 * The GNU C Library now loads audit modules listed in the DT_AUDIT and
   DT_DEPAUDIT dynamic section entries of the main executable.
 
+* powerpc64le supports IEEE128 long double libm/libc redirects when
+  using the -mabi=ieeelongdouble to compile C code on supported GCC
+  toolchains.  It is recommended to use GCC 8 or newer when testing
+  this option.
+
 Deprecated and removed features, and other changes affecting compatibility:
 
 * The deprecated <sys/sysctl.h> header and the sysctl function have been
-- 
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