Add another test of pow [committed]

Add another test of pow [committed]

[Joseph Myers]

This patch adds a randomly-generated test of pow that is observed to
increase ulps on x86_64.

Tested for x86_64 and x86 and ulps updated accordingly.  Committed.

(auto-libm-test-out diffs omitted below.)

2015-05-01  Joseph Myers  <joseph@codesourcery.com>

	* math/auto-libm-test-in: Add another test of pow.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/x86_64/fpu/libm-test-ulps: Update.

diff --git a/math/auto-libm-test-in b/math/auto-libm-test-in
index caf3c93..788c30a 100644
--- a/math/auto-libm-test-in
+++ b/math/auto-libm-test-in
@@ -2200,6 +2200,7 @@ pow 2.0 -100000.0
 pow 1.0625 1.125
 pow 1.5 1.03125
 pow 0x1.7d1a0a6f2p+681 1.5
+pow 0x1.ce78f2p+0 -0x2.7f1f78p+4
 
 sin 0
 sin -0
diff --git a/sysdeps/x86_64/fpu/libm-test-ulps b/sysdeps/x86_64/fpu/libm-test-ulps
index 3b342d6..ab2b0b7 100644
--- a/sysdeps/x86_64/fpu/libm-test-ulps
+++ b/sysdeps/x86_64/fpu/libm-test-ulps
@@ -1816,8 +1816,8 @@ ildouble: 1
 ldouble: 1
 
 Function: "pow":
-float: 1
-ifloat: 1
+float: 3
+ifloat: 3
 ildouble: 1
 ldouble: 1
 
@@ -1853,25 +1853,25 @@ ldouble: 2
 
 Function: "pow_downward":
 double: 1
-float: 1
+float: 3
 idouble: 1
-ifloat: 1
+ifloat: 3
 ildouble: 4
 ldouble: 4
 
 Function: "pow_towardzero":
 double: 1
-float: 1
+float: 4
 idouble: 1
-ifloat: 1
+ifloat: 4
 ildouble: 1
 ldouble: 1
 
 Function: "pow_upward":
 double: 1
-float: 1
+float: 4
 idouble: 1
-ifloat: 1
+ifloat: 4
 ildouble: 2
 ldouble: 2
 

-- 
Joseph S. Myers
joseph@codesourcery.com