From 408dea84bc367f1e4238e9404588bd5837905735 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Thu, 12 Oct 2023 19:09:50 -0400
Subject: [PATCH] [varLib.interpolatable] Speed up complex_vlen()

---
 Lib/fontTools/varLib/interpolatable.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/fontTools/varLib/interpolatable.py b/Lib/fontTools/varLib/interpolatable.py
index 3c15b4352..c15f49f18 100644
--- a/Lib/fontTools/varLib/interpolatable.py
+++ b/Lib/fontTools/varLib/interpolatable.py
@@ -95,7 +95,7 @@ def _vlen(vec):
 def _complex_vlen(vec):
     v = 0
     for x in vec:
-        v += abs(x) * abs(x)
+        v += x.real * x.real + x.imag * x.imag
     return v