commit a4fae580a46c9f21d715b9fc9a60353986f617b9
author Dmitry Tsarevich <dimhotepus@gmail.com> Thu Jan 06 02:21:10 2022 +0300
committer DRC <information@libjpeg-turbo.org> Thu Jan 06 05:46:26 2022 -0600
tree 91295e9c9833b55d244323153a7c5bcec4e54ccc
parent 3039db1450e8e7aef01e04844909858b63928f02

turbojpeg.h: Parenthesize TJSCALED() dimension arg

This ensures that, for example,
TJSCALED(dim0 + dim1, sf)

will evaluate to
(((dim0 + dim1) * sf.num + sf.denom - 1) / sf.denom)

rather than
((dim0 + (dim1 * sf.num) + sf.denom - 1) / sf.denom)

turbojpeg.h

diff --git a/turbojpeg.h b/turbojpeg.h
index 951112b..4b41093 100644
--- a/turbojpeg.h
+++ b/turbojpeg.h
@@ -493,7 +493,7 @@
  * factor.  This macro performs the integer equivalent of <tt>ceil(dimension *
  * scalingFactor)</tt>.
  */
-#define TJSCALED(dimension, scalingFactor) ((dimension * scalingFactor.num \
+#define TJSCALED(dimension, scalingFactor) (((dimension) * scalingFactor.num \
   + scalingFactor.denom - 1) / scalingFactor.denom)