From: Paul E. Murphy <murphyp@linux.vnet.ibm.com>
Date: Tue, 2 Aug 2016 18:32:06 +0000 (-0500)
Subject: Remove tacit double usage in ldbl-128
X-Git-Tag: glibc-2.25~656
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=cad1d6066fa52caa89d15b21b047178d9a8c25f3;p=thirdparty%2Fglibc.git

Remove tacit double usage in ldbl-128

There is quiet truncation to double arithmetic in several
files.  I noticed them when building ldbl-128 in a
soft-fp context.  This did not change any test results.
---

diff --git a/ChangeLog b/ChangeLog
index b694a7cb554..d87885c4d32 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2016-08-03  Paul E. Murphy  <murphyp@linux.vnet.ibm.com>
+
+	* sysdeps/ieee754/ldbl-128/k_tanl.c (__kernal_tanl):
+	Use fabsl instead of fabs.
+	* sysdeps/ieee754/ldbl-128/s_logbl.c (__logbl):
+	Likewise.
+	* sysdeps/ieee754/ldbl-128/s_atanl.c (__kernel_tanl):
+	Add long double suffix to constant to ensure proper
+	promotion to long double.
+
 2016-08-03  Tom Tromey  <tom@tromey.com>
 
 	[BZ #20311]
diff --git a/sysdeps/ieee754/ldbl-128/k_tanl.c b/sysdeps/ieee754/ldbl-128/k_tanl.c
index 6bb221e4a67..cd2bbf5f99d 100644
--- a/sysdeps/ieee754/ldbl-128/k_tanl.c
+++ b/sysdeps/ieee754/ldbl-128/k_tanl.c
@@ -98,7 +98,7 @@ __kernel_tanl (long double x, long double y, int iy)
 	{			/* generate inexact */
 	  if ((ix | u.parts32.w1 | u.parts32.w2 | u.parts32.w3
 	       | (iy + 1)) == 0)
-	    return one / fabs (x);
+	    return one / fabsl (x);
 	  else if (iy == 1)
 	    {
 	      math_check_force_underflow (x);
diff --git a/sysdeps/ieee754/ldbl-128/s_atanl.c b/sysdeps/ieee754/ldbl-128/s_atanl.c
index aaae701551a..35577a857ca 100644
--- a/sysdeps/ieee754/ldbl-128/s_atanl.c
+++ b/sysdeps/ieee754/ldbl-128/s_atanl.c
@@ -231,7 +231,7 @@ __atanl (long double x)
 	 Roundoff to integer is asymmetrical to avoid cancellation when t < 0
          (cf. fdlibm). */
       k = 8.0 * x + 0.25;
-      u = 0.125 * k;
+      u = 0.125L * k;
       /* Small arctan argument.  */
       t = (x - u) / (1.0 + x * u);
     }
diff --git a/sysdeps/ieee754/ldbl-128/s_logbl.c b/sysdeps/ieee754/ldbl-128/s_logbl.c
index 3ba67b7bd2c..b7c1ca15d7e 100644
--- a/sysdeps/ieee754/ldbl-128/s_logbl.c
+++ b/sysdeps/ieee754/ldbl-128/s_logbl.c
@@ -34,7 +34,7 @@ __logbl (long double x)
   GET_LDOUBLE_WORDS64 (hx, lx, x);
   hx &= 0x7fffffffffffffffLL;	/* high |x| */
   if ((hx | lx) == 0)
-    return -1.0 / fabs (x);
+    return -1.0 / fabsl (x);
   if (hx >= 0x7fff000000000000LL)
     return x * x;
   if ((ex = hx >> 48) == 0)	/* IEEE 754 logb */