From 47a1dfaa237aea221038530ea41df955b5677d0e Mon Sep 17 00:00:00 2001
From: Adrian Mariano <avm4@cornell.edu>
Date: Tue, 1 Sep 2020 18:43:53 -0400
Subject: [PATCH] doc tweak

---
 math.scad | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/math.scad b/math.scad
index 6e4be5c..599a0c4 100644
--- a/math.scad
+++ b/math.scad
@@ -1350,7 +1350,9 @@ function C_div(z1,z2) =
 // Description:
 //    Computes roots of the quadratic equation a*x^2+b*x+c==0, where the
 //    coefficients are real numbers.  If real is true then returns only the
-//    real roots.  Otherwise returns a pair of complex values.
+//    real roots.  Otherwise returns a pair of complex values.  This method
+//    may be more reliable than the general root finder at distinguishing
+//    real roots from complex roots.  
 
 // https://people.csail.mit.edu/bkph/articles/Quadratics.pdf