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 +-
 3 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/coders/dcm.c b/coders/dcm.c
index d274ad54c..29eed9618 100644
--- a/coders/dcm.c
+++ b/coders/dcm.c
@@ -2982,12 +2982,12 @@ static MagickBooleanType ReadDCMPixels(Image *image,DCMInfo *info,
         }
       else
         {
-          SetPixelRed(q,(((size_t) pixel.red) |
-            (((size_t) GetPixelRed(q)) << 8)));
-          SetPixelGreen(q,(((size_t) pixel.green) |
-            (((size_t) GetPixelGreen(q)) << 8)));
-          SetPixelBlue(q,(((size_t) pixel.blue) |
-            (((size_t) GetPixelBlue(q)) << 8)));
+          SetPixelRed(q,(Quantum) (((ssize_t) pixel.red) |
+            (((ssize_t) GetPixelRed(q)) << 8)));
+          SetPixelGreen(q,(Quantum) (((ssize_t) pixel.green) |
+            (((ssize_t) GetPixelGreen(q)) << 8)));
+          SetPixelBlue(q,(Quantum) (((ssize_t) pixel.blue) |
+            (((ssize_t) GetPixelBlue(q)) << 8)));
         }
       q++;
     }
diff --git a/coders/jp2.c b/coders/jp2.c
index 0354f8298..7dd0f1332 100644
--- a/coders/jp2.c
+++ b/coders/jp2.c
@@ -1047,8 +1047,10 @@ static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image)
 
         scale=(double) (((size_t) 1UL << jp2_image->comps[i].prec)-1)/
           QuantumRange;
-        q=jp2_image->comps[i].data+(y/jp2_image->comps[i].dy*
-          image->columns/jp2_image->comps[i].dx+x/jp2_image->comps[i].dx);
+        q=jp2_image->comps[i].data+(ssize_t) (y*PerceptibleReciprocal(
+          jp2_image->comps[i].dy)*image->columns*PerceptibleReciprocal(
+          jp2_image->comps[i].dx)+x*PerceptibleReciprocal(
+          jp2_image->comps[i].dx));
         switch (i)
         {
           case 0:
diff --git a/magick/resize.c b/magick/resize.c
index fe662c144..1f3e16928 100644
--- a/magick/resize.c
+++ b/magick/resize.c
@@ -1612,7 +1612,7 @@ MagickExport MagickRealType GetResizeFilterWeight(
   */
   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 */