Move error outside if

1 files changed, 4 insertions, 9 deletions

diff --git a/dda.c b/dda.c
index 55e2e1c..6479c5a 100644
--- a/dda.c
+++ b/dda.c
@@ -87,11 +87,11 @@ dda (test_data_t *testdata)
 	    exit (-1);
 	}
 
+	e -= sample_step_y (y) * dxdy;
+	x += sample_step_y (y) * dxdy;
+
 	if (dxdy >= 0)
 	{
-	    e -= sample_step_y (y) * dxdy;
-	    x += sample_step_y (y) * dxdy;
-
 	    while (e <= 0)
 	    {
 		double s = sample_step_x_forward (xi);
@@ -102,12 +102,7 @@ dda (test_data_t *testdata)
 	}
 	else
 	{
-	    double s;
-
-	    e -= sample_step_y (y) * dxdy;
-	    x += sample_step_y (y) * dxdy;
-
-	    s = sample_step_x_backward (xi);
+	    double s = sample_step_x_backward (xi);
 
 	    while (e > s)
 	    {