From 4b539a826b64d846d02a6cde9d6bcff22472af88 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Mon, 7 Oct 2013 18:41:03 +0000
Subject: [PATCH] math: use sqrtl if FLT_EVAL_METHOD==2 in acosh and acoshf

this makes acosh slightly more precise around 1.0 on i386
---
 src/math/acosh.c  | 5 +++++
 src/math/acoshf.c | 8 ++++++++
 2 files changed, 13 insertions(+)

diff --git a/src/math/acosh.c b/src/math/acosh.c
index 4ce9b3d1..badbf908 100644
--- a/src/math/acosh.c
+++ b/src/math/acosh.c
@@ -1,5 +1,10 @@
 #include "libm.h"
 
+#if FLT_EVAL_METHOD==2
+#undef sqrt
+#define sqrt sqrtl
+#endif
+
 /* acosh(x) = log(x + sqrt(x*x-1)) */
 double acosh(double x)
 {
diff --git a/src/math/acoshf.c b/src/math/acoshf.c
index 16550f19..8a4ec4d5 100644
--- a/src/math/acoshf.c
+++ b/src/math/acoshf.c
@@ -1,5 +1,13 @@
 #include "libm.h"
 
+#if FLT_EVAL_METHOD==2
+#undef sqrtf
+#define sqrtf sqrtl
+#elif FLT_EVAL_METHOD==1
+#undef sqrtf
+#define sqrtf sqrt
+#endif
+
 /* acosh(x) = log(x + sqrt(x*x-1)) */
 float acoshf(float x)
 {
-- 
2.25.1