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Add more tests of lgamma [committed]


This patch adds some randomly-generated tests of lgamma 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 lgamma.
	* 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 7a8a67b..caf3c93 100644
--- a/math/auto-libm-test-in
+++ b/math/auto-libm-test-in
@@ -1759,6 +1759,14 @@ lgamma -0x1p-16445
 lgamma 0x1p-16494
 lgamma -0x1p-16494
 
+lgamma 0x8.8d2d5p+0
+lgamma 0x1.6a324ap+52
+lgamma 0x9.62f59p+0
+lgamma 0xa.d55d6b4d78e28p+0
+lgamma 0x8.d6315p+0
+lgamma 0xb.2e679p+0
+lgamma 0xb.01191p+0
+
 log 1
 log e
 log 1/e
diff --git a/sysdeps/i386/fpu/libm-test-ulps b/sysdeps/i386/fpu/libm-test-ulps
index ae64aae..b13b574 100644
--- a/sysdeps/i386/fpu/libm-test-ulps
+++ b/sysdeps/i386/fpu/libm-test-ulps
@@ -1438,32 +1438,32 @@ double: 1
 float: 1
 idouble: 1
 ifloat: 1
-ildouble: 1
-ldouble: 1
+ildouble: 2
+ldouble: 2
 
 Function: "gamma_downward":
 double: 2
 float: 2
 idouble: 2
 ifloat: 2
-ildouble: 3
-ldouble: 3
+ildouble: 5
+ldouble: 5
 
 Function: "gamma_towardzero":
 double: 2
 float: 2
 idouble: 2
 ifloat: 2
-ildouble: 2
-ldouble: 2
+ildouble: 5
+ldouble: 5
 
 Function: "gamma_upward":
 double: 2
 float: 3
 idouble: 2
 ifloat: 3
-ildouble: 2
-ldouble: 2
+ildouble: 4
+ldouble: 4
 
 Function: "hypot":
 ildouble: 1
@@ -1564,32 +1564,32 @@ double: 1
 float: 1
 idouble: 1
 ifloat: 1
-ildouble: 1
-ldouble: 1
+ildouble: 2
+ldouble: 2
 
 Function: "lgamma_downward":
 double: 2
 float: 2
 idouble: 2
 ifloat: 2
-ildouble: 3
-ldouble: 3
+ildouble: 5
+ldouble: 5
 
 Function: "lgamma_towardzero":
 double: 2
 float: 2
 idouble: 2
 ifloat: 2
-ildouble: 2
-ldouble: 2
+ildouble: 5
+ldouble: 5
 
 Function: "lgamma_upward":
 double: 2
 float: 3
 idouble: 2
 ifloat: 3
-ildouble: 2
-ldouble: 2
+ildouble: 4
+ldouble: 4
 
 Function: "log":
 ildouble: 1
diff --git a/sysdeps/x86_64/fpu/libm-test-ulps b/sysdeps/x86_64/fpu/libm-test-ulps
index f0ece1e..3b342d6 100644
--- a/sysdeps/x86_64/fpu/libm-test-ulps
+++ b/sysdeps/x86_64/fpu/libm-test-ulps
@@ -1536,36 +1536,36 @@ ildouble: 4
 ldouble: 4
 
 Function: "gamma":
-double: 1
-float: 1
-idouble: 1
-ifloat: 1
-ildouble: 1
-ldouble: 1
-
-Function: "gamma_downward":
 double: 2
-float: 1
+float: 2
 idouble: 2
-ifloat: 1
-ildouble: 3
-ldouble: 3
-
-Function: "gamma_towardzero":
-double: 1
-float: 1
-idouble: 1
-ifloat: 1
+ifloat: 2
 ildouble: 2
 ldouble: 2
 
+Function: "gamma_downward":
+double: 4
+float: 3
+idouble: 4
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
+Function: "gamma_towardzero":
+double: 4
+float: 3
+idouble: 4
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
 Function: "gamma_upward":
-double: 1
+double: 3
 float: 3
-idouble: 1
+idouble: 3
 ifloat: 3
-ildouble: 2
-ldouble: 2
+ildouble: 4
+ldouble: 4
 
 Function: "hypot":
 double: 1
@@ -1664,36 +1664,36 @@ ildouble: 4
 ldouble: 4
 
 Function: "lgamma":
-double: 1
-float: 1
-idouble: 1
-ifloat: 1
-ildouble: 1
-ldouble: 1
-
-Function: "lgamma_downward":
 double: 2
-float: 1
+float: 2
 idouble: 2
-ifloat: 1
-ildouble: 3
-ldouble: 3
-
-Function: "lgamma_towardzero":
-double: 1
-float: 1
-idouble: 1
-ifloat: 1
+ifloat: 2
 ildouble: 2
 ldouble: 2
 
+Function: "lgamma_downward":
+double: 4
+float: 3
+idouble: 4
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
+Function: "lgamma_towardzero":
+double: 4
+float: 3
+idouble: 4
+ifloat: 3
+ildouble: 5
+ldouble: 5
+
 Function: "lgamma_upward":
-double: 1
+double: 3
 float: 3
-idouble: 1
+idouble: 3
 ifloat: 3
-ildouble: 2
-ldouble: 2
+ildouble: 4
+ldouble: 4
 
 Function: "log":
 float: 1

-- 
Joseph S. Myers
joseph@codesourcery.com


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