Add more tests of tgamma [committed]

Add more tests of tgamma [committed]

[Joseph Myers]

This patch adds some randomly-generated tests of tgamma that are
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 more tests of tgamma.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.

diff --git a/math/auto-libm-test-in b/math/auto-libm-test-in
index 64000ff..89fcc17 100644
--- a/math/auto-libm-test-in
+++ b/math/auto-libm-test-in
@@ -2870,6 +2870,10 @@ tgamma 0x6.db8c603359a971081bc4a2e9dfd4p+8
 tgamma 1e3
 tgamma -100000.5
 
+tgamma -0x3.06644cp+0
+tgamma -0x6.fe4636e0c5064p+0
+tgamma -0x7.a13d7a2945cd5718p+0
+
 y0 0.125
 y0 0.75
 y0 1.0
diff --git a/sysdeps/i386/fpu/libm-test-ulps b/sysdeps/i386/fpu/libm-test-ulps
index 10e0ca6..2eceadf 100644
--- a/sysdeps/i386/fpu/libm-test-ulps
+++ b/sysdeps/i386/fpu/libm-test-ulps
@@ -1854,12 +1854,12 @@ ildouble: 5
 ldouble: 4
 
 Function: "tgamma":
-double: 4
-float: 2
-idouble: 4
-ifloat: 2
-ildouble: 4
-ldouble: 4
+double: 6
+float: 4
+idouble: 6
+ifloat: 4
+ildouble: 6
+ldouble: 6
 
 Function: "y0":
 double: 1
diff --git a/sysdeps/x86_64/fpu/libm-test-ulps b/sysdeps/x86_64/fpu/libm-test-ulps
index 9fd710b..97e279c 100644
--- a/sysdeps/x86_64/fpu/libm-test-ulps
+++ b/sysdeps/x86_64/fpu/libm-test-ulps
@@ -2014,12 +2014,12 @@ ildouble: 4
 ldouble: 4
 
 Function: "tgamma":
-double: 4
-float: 3
-idouble: 4
-ifloat: 3
-ildouble: 4
-ldouble: 4
+double: 9
+float: 4
+idouble: 9
+ifloat: 4
+ildouble: 6
+ldouble: 6
 
 Function: "y0":
 double: 2

-- 
Joseph S. Myers
joseph@codesourcery.com