From 7001c21828420f027f5984132d551af99794f1e4 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Fri, 7 Feb 2020 01:39:45 +0100
Subject: Fix numerical precision issues in vandg and robin

Refs #1906
Fix remaining issues of https://github.com/OSGeo/PROJ/issues/1906#issuecomment-583168348
as found with gcc 8.2.0 -m32 -O2
---
 src/projections/robin.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/projections/robin.cpp')

diff --git a/src/projections/robin.cpp b/src/projections/robin.cpp
index 2e36106a..5a3b081c 100644
--- a/src/projections/robin.cpp
+++ b/src/projections/robin.cpp
@@ -84,7 +84,7 @@ static PJ_XY robin_s_forward (PJ_LP lp, PJ *P) {           /* Spheroidal, forwar
     (void) P;
 
     dphi = fabs(lp.phi);
-    i = isnan(lp.phi) ? -1 : lround(floor(dphi * C1));
+    i = isnan(lp.phi) ? -1 : lround(floor(dphi * C1 + 1e-15));
     if( i < 0 ){
         proj_errno_set(P, PJD_ERR_TOLERANCE_CONDITION);
         return xy;
-- 
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