46 lines
1.4 KiB
Diff
46 lines
1.4 KiB
Diff
From 052175e4b190598141fbcc64641cd5ee4db3602d Mon Sep 17 00:00:00 2001
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From: Cristy <urban-warrior@imagemagick.org>
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Date: Thu, 10 Oct 2019 20:40:18 -0400
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Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/1743
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---
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magick/statistic.c | 11 +++++++++--
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1 file changed, 9 insertions(+), 2 deletions(-)
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diff --git a/magick/statistic.c b/magick/statistic.c
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index 2db7c858f..827d87fa6 100644
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--- a/magick/statistic.c
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+++ b/magick/statistic.c
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@@ -230,6 +230,9 @@ static MagickRealType ApplyEvaluateOperator(RandomInfo *random_info,
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MagickRealType
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result;
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+ register ssize_t
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+ i;
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+
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result=0.0;
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switch (op)
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{
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@@ -299,7 +302,9 @@ static MagickRealType ApplyEvaluateOperator(RandomInfo *random_info,
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}
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case LeftShiftEvaluateOperator:
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{
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- result=(MagickRealType) ((ssize_t) pixel << (ssize_t) (value+0.5));
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+ result=(double) pixel;
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+ for (i=0; i < (ssize_t) value; i++)
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+ result*=2.0;
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break;
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}
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case LogEvaluateOperator:
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@@ -359,7 +364,9 @@ static MagickRealType ApplyEvaluateOperator(RandomInfo *random_info,
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}
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case RightShiftEvaluateOperator:
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{
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- result=(MagickRealType) ((ssize_t) pixel >> (ssize_t) (value+0.5));
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+ result=(MagickRealType) pixel;
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+ for (i=0; i < (ssize_t) value; i++)
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+ result/=2.0;
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break;
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}
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case RootMeanSquareEvaluateOperator:
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