diff mbox

Add more tests of atan [committed]

Message ID alpine.DEB.2.10.1504082100190.11808@digraph.polyomino.org.uk
State New
Headers show

Commit Message

Joseph Myers April 8, 2015, 9 p.m. UTC 
This patch adds some randomly-generated tests of atan 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.)

2015-04-08  Joseph Myers  <joseph@codesourcery.com>

	* math/auto-libm-test-in: Add more tests of atan.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
diff mbox

Patch

diff --git a/math/auto-libm-test-in b/math/auto-libm-test-in
index 9cf1f58..0fa1f97 100644
--- a/math/auto-libm-test-in
+++ b/math/auto-libm-test-in
@@ -242,6 +242,9 @@  atan 0x1p-600
 atan 0x1p-10000
 atan -0x3.b02d84p-4
 atan -0x3.3fb708p-4
+atan -0x2.3249ap+0
+atan -0x1.363f46p+0
+atan -0x1.ad4c0ap+0
 atan min
 atan -min
 atan min_subnorm
diff --git a/sysdeps/i386/fpu/libm-test-ulps b/sysdeps/i386/fpu/libm-test-ulps
index 924abc9..e3554ed 100644
--- a/sysdeps/i386/fpu/libm-test-ulps
+++ b/sysdeps/i386/fpu/libm-test-ulps
@@ -77,6 +77,10 @@  ifloat: 1
 ildouble: 5
 ldouble: 4
 
+Function: "atan":
+ildouble: 1
+ldouble: 1
+
 Function: "atan2":
 ildouble: 1
 ldouble: 1
diff --git a/sysdeps/x86_64/fpu/libm-test-ulps b/sysdeps/x86_64/fpu/libm-test-ulps
index deac26f..33e597a 100644
--- a/sysdeps/x86_64/fpu/libm-test-ulps
+++ b/sysdeps/x86_64/fpu/libm-test-ulps
@@ -125,6 +125,12 @@  ifloat: 3
 ildouble: 4
 ldouble: 4
 
+Function: "atan":
+float: 1
+ifloat: 1
+ildouble: 1
+ldouble: 1
+
 Function: "atan2":
 float: 1
 ifloat: 1
@@ -173,9 +179,9 @@  ldouble: 1
 
 Function: "atan_upward":
 double: 1
-float: 1
+float: 2
 idouble: 1
-ifloat: 1
+ifloat: 2
 ildouble: 1
 ldouble: 1