From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Fri, 18 Jun 2021 00:31:55 +0000 (-0700)
Subject: replace an open coded hypotenuse calculation in RAD with call to hypot
X-Git-Tag: 2.48.0~43^2~8
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c05e3d316c44a505f384e94fe9679845e3d734b5;p=graphviz

replace an open coded hypotenuse calculation in RAD with call to hypot

The libc function hypot does the same work, with the potential to be more
accurate and efficient.
---

diff --git a/lib/fdpgen/xlayout.c b/lib/fdpgen/xlayout.c
index 975e4870f..03560fc25 100644
--- a/lib/fdpgen/xlayout.c
+++ b/lib/fdpgen/xlayout.c
@@ -28,6 +28,7 @@ Increase less between tries
 #include <neatogen/adjust.h>
 #include <fdpgen/dbg.h>
 #include <ctype.h>
+#include <math.h>
 
 /* Use bbox based force function */
 /* #define MS */
@@ -64,7 +65,7 @@ static double RAD(Agnode_t * n)
 {
     double w = WD2(n);
     double h = HT2(n);
-    return sqrt(w * w + h * h);
+    return hypot(w, h);
 }
 
 /* xinit_params: