From: Cristy <urban-warrior@imagemagick.org>
Date: Fri, 20 Jul 2018 23:22:28 +0000 (-0400)
Subject: Non-HDRI ScaleLongToQuantum() private method no longer adds a half interval
X-Git-Tag: 7.0.8-8~18
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=58c6c9433a879c19b580ba816fb63f059a40194d;p=imagemagick

Non-HDRI ScaleLongToQuantum() private method no longer adds a half interval
---

diff --git a/MagickCore/quantum-private.h b/MagickCore/quantum-private.h
index 888b581f0..baea59398 100644
--- a/MagickCore/quantum-private.h
+++ b/MagickCore/quantum-private.h
@@ -336,7 +336,7 @@ static inline Quantum ScaleCharToQuantum(const unsigned char value)
 static inline Quantum ScaleLongToQuantum(const unsigned int value)
 {
 #if !defined(MAGICKCORE_HDRI_SUPPORT)
-  return((Quantum) ((value+8421504UL)/16843009UL));
+  return((Quantum) ((value)/16843009UL));
 #else
   return((Quantum) (value/16843009.0));
 #endif
@@ -438,8 +438,7 @@ static inline Quantum ScaleCharToQuantum(const unsigned char value)
 static inline Quantum ScaleLongToQuantum(const unsigned int value)
 {
 #if !defined(MAGICKCORE_HDRI_SUPPORT)
-  return((Quantum) ((value+MagickULLConstant(32768))/
-    MagickULLConstant(65537)));
+  return((Quantum) ((value)/MagickULLConstant(65537)));
 #else
   return((Quantum) (value/65537.0));
 #endif
@@ -448,8 +447,7 @@ static inline Quantum ScaleLongToQuantum(const unsigned int value)
 static inline Quantum ScaleLongLongToQuantum(const MagickSizeType value)
 {
 #if !defined(MAGICKCORE_HDRI_SUPPORT)
-  return((Quantum) ((value+MagickULLConstant(8421376))/
-    MagickULLConstant(16842752)));
+  return((Quantum) ((value)/MagickULLConstant(16842752)));
 #else
   return((Quantum) (value/16842752.0));
 #endif