From 9373913086dcf16421bbe6cac49bb1444155c1de Mon Sep 17 00:00:00 2001
From: Michael Stahl <mstahl@redhat.com>
Date: Fri, 23 Sep 2016 21:16:39 +0200
Subject: sal: Mac OS X 10.8 fails test_log1p

... because its libc log1p() does not return -0.0 unmodified but as +0.0

Change-Id: Ib3fcd005a9876e0e74775bf4f826a887cdd29279
Reviewed-on: https://gerrit.libreoffice.org/29237
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>
---
 sal/rtl/math.cxx | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'sal/rtl')

diff --git a/sal/rtl/math.cxx b/sal/rtl/math.cxx
index c694e587bb1b..b8a1cd2b2962 100644
--- a/sal/rtl/math.cxx
+++ b/sal/rtl/math.cxx
@@ -1071,6 +1071,10 @@ double SAL_CALL rtl_math_expm1( double fValue ) SAL_THROW_EXTERN_C()
 
 double SAL_CALL rtl_math_log1p( double fValue ) SAL_THROW_EXTERN_C()
 {
+#ifdef __APPLE__
+    if (fValue == -0.0)
+        return fValue; // OS X 10.8 libc returns 0.0 for -0.0
+#endif
     return log1p(fValue);
 }
 
-- 
cgit