From ca880f497aa9eeff9eccea7ab0168a4fed73d411 Mon Sep 17 00:00:00 2001
From: Charles Karney <charles@karney.com>
Date: Sat, 17 Mar 2018 18:32:26 -0400
Subject: Patch 1.49.3 for geodesic package.

Set flags for Intel compiler to prevent incorrect optimization of
arithmetic expressions #826.  Guard against nans in sincosdx #834.
Issue #831 is not addressed here (need more information...).
---
 src/geodtest.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/geodtest.c')

diff --git a/src/geodtest.c b/src/geodtest.c
index 8cc48134..1025ce08 100644
--- a/src/geodtest.c
+++ b/src/geodtest.c
@@ -616,7 +616,8 @@ static int GeodSolve73() {
               &lat2, &lon2, &azi2);
   result += assertEquals(lat2, 81.04623, 0.5e-5);
   result += assertEquals(lon2, -170, 0.5e-5);
-  result += assertEquals(azi2, 0, 0.5e-5);
+  result += azi2 == 0 ? 0 : 1;
+  result += 1/azi2 > 0 ? 0 : 1; /* Check that azi2 = +0.0 not -0.0 */
   return result;
 }
 
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