[SCM] PostGIS branch master updated. 3.6.0rc2-473-g260127869

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- Log -----------------------------------------------------------------
commit 26012786958aedb55589c0696086f7c48fc9fc46
Author: Sandro Santilli <strk at kbt.io>
Date:   Fri Apr 17 10:59:28 2026 +0200

    Robustly return 0 as azimuth for north-bound segment
    
    Or we can get 2PI instead of 0 on some platforms, see:
    https://www.ict.inaf.it/gitlab/postgis/postgis/-/jobs/149333#L5560

diff --git a/liblwgeom/measures.c b/liblwgeom/measures.c
index e10d60bf9..1dcdd6bd2 100644
--- a/liblwgeom/measures.c
+++ b/liblwgeom/measures.c
@@ -2461,9 +2461,19 @@ distance2d_sqr_pt_seg(const POINT2D *C, const POINT2D *A, const POINT2D *B)
 int
 azimuth_pt_pt(const POINT2D *A, const POINT2D *B, double *d)
 {
-	if (A->x == B->x && A->y == B->y)
-		return LW_FALSE;
+	if (A->x == B->x )
+	{
+		if ( A->y == B->y)
+		{
+			return LW_FALSE;
+		}
+		*d = A->y < B->y ? 0.0 : M_PI;
+		return LW_TRUE;
+	}
+	/* TODO: use M_PI_2 instead of M_PI/2 ? */
 	*d = fmod(2 * M_PI + M_PI / 2 - atan2(B->y - A->y, B->x - A->x), 2 * M_PI);
+
+	/* TODO: convert 2*M_PI to 0 ? */
 	return LW_TRUE;
 }
 

-----------------------------------------------------------------------

Summary of changes:
 liblwgeom/measures.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)


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