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turbojpeg.h: Parenthesize TJSCALED() dimension arg

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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)
This commit is contained in:
Dmitry Tsarevich
2022-01-06 02:21:10 +03:00
committed by DRC
parent 3039db1450
commit a4fae580a4
1 changed files with 1 additions and 1 deletions
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2
turbojpeg.h
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@@ -493,7 +493,7 @@ typedef void* tjhandle;
* 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)