From 57c26e8cb23de471123872931dc5bb6277acd498 Mon Sep 17 00:00:00 2001
From: Joe Ramsay <Joe.Ramsay@arm.com>
Date: Thu, 24 Nov 2022 11:34:39 +0000
Subject: pl/math: Update ULP threshold for vector atans

New max observed for both Neon and SVE.
---
 pl/math/sv_atan_2u5.c  | 6 +++---
 pl/math/test/runulp.sh | 4 ++--
 pl/math/v_atan_2u5.c   | 6 +++---
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/pl/math/sv_atan_2u5.c b/pl/math/sv_atan_2u5.c
index e0b621f..49c5e82 100644
--- a/pl/math/sv_atan_2u5.c
+++ b/pl/math/sv_atan_2u5.c
@@ -17,9 +17,9 @@
 /* Fast implementation of SVE atan.
    Based on atan(x) ~ shift + z + z^3 * P(z^2) with reduction to [0,1] using
    z=1/x and shift = pi/2. Largest errors are close to 1. The maximum observed
-   error is 2.22 ulps:
-   __sv_atan(0x1.0005fd947bf57p+0) got 0x1.9225b2c6cd6cdp-1
-				  want 0x1.9225b2c6cd6cfp-1.  */
+   error is 2.27 ulps:
+   __sv_atan(0x1.0005af27c23e9p+0) got 0x1.9225645bdd7c1p-1
+				  want 0x1.9225645bdd7c3p-1.  */
 sv_f64_t
 __sv_atan_x (sv_f64_t x, const svbool_t pg)
 {
diff --git a/pl/math/test/runulp.sh b/pl/math/test/runulp.sh
index 6410dd9..dd38e37 100755
--- a/pl/math/test/runulp.sh
+++ b/pl/math/test/runulp.sh
@@ -600,7 +600,7 @@ L_erf=1.26
 L_erff=0.76
 # TODO tighten this once __v_atan2 is fixed
 L_atan2=2.9
-L_atan=1.73
+L_atan=1.78
 L_atan2f=2.46
 L_atanf=2.5
 L_log1pf=1.53
@@ -623,7 +623,7 @@ L_sve_cos=1.61
 L_sve_sinf=1.40
 L_sve_sin=2.03
 L_sve_atanf=2.9
-L_sve_atan=1.73
+L_sve_atan=1.78
 L_sve_atan2f=2.45
 L_sve_atan2=1.73
 L_sve_log10=1.97
diff --git a/pl/math/v_atan_2u5.c b/pl/math/v_atan_2u5.c
index a0223ed..05c77c0 100644
--- a/pl/math/v_atan_2u5.c
+++ b/pl/math/v_atan_2u5.c
@@ -15,9 +15,9 @@
 
 /* Fast implementation of vector atan.
    Based on atan(x) ~ shift + z + z^3 * P(z^2) with reduction to [0,1] using
-   z=1/x and shift = pi/2. Maximum observed error is 2.22 ulps:
-   __v_atan(0x1.0005fd947bf57p+0) got 0x1.9225b2c6cd6cdp-1
-				 want 0x1.9225b2c6cd6cfp-1.  */
+   z=1/x and shift = pi/2. Maximum observed error is 2.27 ulps:
+   __v_atan(0x1.0005af27c23e9p+0) got 0x1.9225645bdd7c1p-1
+				 want 0x1.9225645bdd7c3p-1.  */
 VPCS_ATTR
 v_f64_t V_NAME (atan) (v_f64_t x)
 {
-- 
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