Move xi outside loop

1 files changed, 2 insertions, 3 deletions

diff --git a/dda.c b/dda.c
index 91357ee..15c7b1c 100644
--- a/dda.c
+++ b/dda.c
@@ -59,11 +59,10 @@ dda (test_data_t *testdata)
     double dxdy = (x1 - x0) / (y1 - y0);
     double y = next_sample_y (y0);
     double x = (y - y0) * dxdy + x0;
+    double xi = next_sample_x (x);
 
     while (y < next_sample_y (y1))
     {
-	double xi = next_sample_x (x);
-
 	if (testdata->points[i++] != xi		||
 	    testdata->points[i++] != y)
 	{
@@ -72,7 +71,7 @@ dda (test_data_t *testdata)
 	}
 
 	x += sample_step_y (y) * dxdy;
-
+	xi = next_sample_x (x);
 	y += sample_step_y (y);
     }
 }