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GNU C Library master sources branch master updated. glibc-2.22-266-g020167a

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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=020167a4ce53f7dd8d5b1912a42163bd1077e6c5

commit 020167a4ce53f7dd8d5b1912a42163bd1077e6c5
Author: Wilco Dijkstra <wdijkstr@arm.com>
Date:   Fri Sep 18 16:39:08 2015 +0100

    Use the GCC builtin functions for the non-inlined signbit implementations.
    
    2015-09-18  Wilco Dijkstra  <wdijkstr@arm.com>
    
            * sysdeps/ieee754/dbl-64/s_signbit.c (__signbit):
            Use __builtin_signbit.
            * sysdeps/ieee754/flt-32/s_signbitf.c (__signbitf):
            Use __builtin_signbitf.
            * sysdeps/ieee754/ldbl-128/s_signbitl.c (__signbitl):
            Use __builtin_signbitl.
            * sysdeps/ieee754/ldbl-128ibm/s_signbitl.c (___signbitl): Likewise.
            * sysdeps/ieee754/ldbl-96/s_signbitl.c (__signbitl): Likewise.

diff --git a/ChangeLog b/ChangeLog
index c6216c9..72605d4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,16 @@
 2015-09-18  Wilco Dijkstra  <wdijkstr@arm.com>
 
+	* sysdeps/ieee754/dbl-64/s_signbit.c (__signbit):
+	Use __builtin_signbit.
+	* sysdeps/ieee754/flt-32/s_signbitf.c (__signbitf):
+	Use __builtin_signbitf.
+	* sysdeps/ieee754/ldbl-128/s_signbitl.c (__signbitl):
+	Use __builtin_signbitl.
+	* sysdeps/ieee754/ldbl-128ibm/s_signbitl.c (___signbitl): Likewise.
+	* sysdeps/ieee754/ldbl-96/s_signbitl.c (__signbitl): Likewise.
+
+2015-09-18  Wilco Dijkstra  <wdijkstr@arm.com>
+
 	[BZ #15367]
 	[BZ #17441]
 
diff --git a/sysdeps/ieee754/dbl-64/s_signbit.c b/sysdeps/ieee754/dbl-64/s_signbit.c
index 764f11a..91797ee 100644
--- a/sysdeps/ieee754/dbl-64/s_signbit.c
+++ b/sysdeps/ieee754/dbl-64/s_signbit.c
@@ -19,13 +19,8 @@
 
 #include <math.h>
 
-#include <math_private.h>
-
 int
 __signbit (double x)
 {
-  int32_t hx;
-
-  GET_HIGH_WORD (hx, x);
-  return hx & 0x80000000;
+  return __builtin_signbit (x);
 }
diff --git a/sysdeps/ieee754/flt-32/s_signbitf.c b/sysdeps/ieee754/flt-32/s_signbitf.c
index 169820e..034c175 100644
--- a/sysdeps/ieee754/flt-32/s_signbitf.c
+++ b/sysdeps/ieee754/flt-32/s_signbitf.c
@@ -19,13 +19,8 @@
 
 #include <math.h>
 
-#include <math_private.h>
-
 int
 __signbitf (float x)
 {
-  int32_t hx;
-
-  GET_FLOAT_WORD (hx, x);
-  return hx & 0x80000000;
+  return __builtin_signbitf (x);
 }
diff --git a/sysdeps/ieee754/ldbl-128/s_signbitl.c b/sysdeps/ieee754/ldbl-128/s_signbitl.c
index acfe859..ea689a6 100644
--- a/sysdeps/ieee754/ldbl-128/s_signbitl.c
+++ b/sysdeps/ieee754/ldbl-128/s_signbitl.c
@@ -19,13 +19,8 @@
 
 #include <math.h>
 
-#include <math_private.h>
-
 int
 __signbitl (long double x)
 {
-  int64_t e;
-
-  GET_LDOUBLE_MSW64 (e, x);
-  return e < 0;
+  return __builtin_signbitl (x);
 }
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_signbitl.c b/sysdeps/ieee754/ldbl-128ibm/s_signbitl.c
index e95ad55..5e2bd90 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_signbitl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_signbitl.c
@@ -18,18 +18,12 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <math.h>
-#include <math_private.h>
 #include <math_ldbl_opt.h>
 
 int
 ___signbitl (long double x)
 {
-  int64_t e;
-  double xhi;
-
-  xhi = ldbl_high (x);
-  EXTRACT_WORDS64 (e, xhi);
-  return e < 0;
+  return __builtin_signbitl (x);
 }
 #if IS_IN (libm)
 long_double_symbol (libm, ___signbitl, __signbitl);
diff --git a/sysdeps/ieee754/ldbl-96/s_signbitl.c b/sysdeps/ieee754/ldbl-96/s_signbitl.c
index bbe72a6..ea689a6 100644
--- a/sysdeps/ieee754/ldbl-96/s_signbitl.c
+++ b/sysdeps/ieee754/ldbl-96/s_signbitl.c
@@ -19,13 +19,8 @@
 
 #include <math.h>
 
-#include <math_private.h>
-
 int
 __signbitl (long double x)
 {
-  int32_t e;
-
-  GET_LDOUBLE_EXP (e, x);
-  return e & 0x8000;
+  return __builtin_signbitl (x);
 }

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                |   11 +++++++++++
 sysdeps/ieee754/dbl-64/s_signbit.c       |    7 +------
 sysdeps/ieee754/flt-32/s_signbitf.c      |    7 +------
 sysdeps/ieee754/ldbl-128/s_signbitl.c    |    7 +------
 sysdeps/ieee754/ldbl-128ibm/s_signbitl.c |    8 +-------
 sysdeps/ieee754/ldbl-96/s_signbitl.c     |    7 +------
 6 files changed, 16 insertions(+), 31 deletions(-)


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