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Backport of:
From 53cb91b3e7bf95d0e372cbc745e0055ac6054745 Mon Sep 17 00:00:00 2001
From: Cristy <mikayla-grace@urban-warrior.org>
Date: Wed, 3 Feb 2021 15:30:39 -0500
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/pull/3177
---
coders/dcm.c | 12 ++++++------
coders/jp2.c | 6 ++++--
magick/resize.c | 2 +-
magick/thread-private.h | 6 +++---
magick/visual-effects.c | 6 ++++--
5 files changed, 18 insertions(+), 14 deletions(-)
--- imagemagick-6.9.11.60+dfsg.orig/magick/resize.c
+++ imagemagick-6.9.11.60+dfsg/magick/resize.c
@@ -1611,7 +1611,7 @@ MagickExport MagickRealType GetResizeFil
*/
assert(resize_filter != (ResizeFilter *) NULL);
assert(resize_filter->signature == MagickCoreSignature);
- x_blur=fabs((double) x)/resize_filter->blur; /* X offset with blur scaling */
+ x_blur=fabs((double) x)*PerceptibleReciprocal(resize_filter->blur); /* X offset with blur scaling */
if ((resize_filter->window_support < MagickEpsilon) ||
(resize_filter->window == Box))
scale=1.0; /* Point or Box Filter -- avoid division by zero */
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