From: cristy <urban-warrior@git.imagemagick.org>
Date: Tue, 11 Dec 2012 12:52:51 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~4627
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=93c8f1606f63ab2bac5d044f5174dfee75da57ca;p=imagemagick

---

diff --git a/MagickCore/resample.c b/MagickCore/resample.c
index fdeab0341..225d446b5 100644
--- a/MagickCore/resample.c
+++ b/MagickCore/resample.c
@@ -894,7 +894,8 @@ static inline void ClampUpAxes(const double dux,const double dvx,
   const double frobenius_squared = n11+n22;
   const double discriminant =
     (frobenius_squared+twice_det)*(frobenius_squared-twice_det);
-  const double sqrt_discriminant = sqrt(discriminant);
+  const double sqrt_discriminant =
+    sqrt(discriminant < -0.0 ? 0.0 : discriminant);
   /*
    * s1 is the largest singular value of the inverse Jacobian
    * matrix. In other words, its reciprocal is the smallest singular