ImageMagick-0-1-are-special-cases-for-pow.patch

@@ -0,0 +1,36 @@
+diff --git a/MagickCore/statistic.c b/MagickCore/statistic.c
+index 8489fa4a0d1..377c7256a92 100644
+--- a/MagickCore/statistic.c
++++ b/MagickCore/statistic.c
+@@ -377,7 +377,7 @@ static double ApplyEvaluateOperator(RandomInfo *random_info,const Quantum pixel,
+     }
+     case PowEvaluateOperator:
+     {
+-      if (PerceptibleReciprocal(value) <= MagickEpsilon)
++      if (fabs(value) <= MagickEpsilon)
+         break;
+       if (((double) pixel < 0.0) && ((value-floor(value)) > MagickEpsilon))
+         result=(double) -((double) QuantumRange*pow(-(QuantumScale*(double)
+diff --git a/MagickWand/operation.c b/MagickWand/operation.c
+index 38e3145c321..1d853eedeb5 100644
+--- a/MagickWand/operation.c
++++ b/MagickWand/operation.c
+@@ -2477,14 +2477,15 @@ static MagickBooleanType CLISimpleOperatorImage(MagickCLI *cli_wand,
+           if (IsGeometry(arg1) == MagickFalse)
+             CLIWandExceptArgBreak(OptionError,"InvalidArgument",option,arg1);
+           constant=StringToDouble(arg1,(char **) NULL);
+-#if 1
++#if 0
+           /* Using Gamma, via a cache */
+           if (IfPlusOp)
+             constant=PerceptibleReciprocal(constant);
+           (void) GammaImage(_image,constant,_exception);
+ #else
+           /* Using Evaluate POW, direct update of values - more accurate */
+-          if (IfNormalOp)
++          if (IfNormalOp && (fabs(constant) <= MagickEpsilon) &&
++             ((constant-1.0) > MagickEpsilon))
+             constant=PerceptibleReciprocal(constant);
+           (void) EvaluateImage(_image,PowEvaluateOperator,constant,_exception);
+           _image->gamma*=StringToDouble(arg1,(char **) NULL);
+

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ImageMagick-check-for-pow-zero.patch

@@ -0,0 +1,23 @@
+diff --git a/MagickCore/statistic.c b/MagickCore/statistic.c
+index caa221e7f34..8489fa4a0d1 100644
+--- a/MagickCore/statistic.c
++++ b/MagickCore/statistic.c
+@@ -377,12 +377,13 @@ static double ApplyEvaluateOperator(RandomInfo *random_info,const Quantum pixel,
+     }
+     case PowEvaluateOperator:
+     {
+-      if (((double) pixel < 0) && ((value-floor(value)) > MagickEpsilon))
++      if (PerceptibleReciprocal(value) <= MagickEpsilon)
++        break;
++      if (((double) pixel < 0.0) && ((value-floor(value)) > MagickEpsilon))
+         result=(double) -((double) QuantumRange*pow(-(QuantumScale*(double)
+-          pixel),(double) value));
++          pixel),value));
+       else
+-        result=(double) QuantumRange*pow(QuantumScale*(double) pixel,
+-          (double) value);
++        result=(double) QuantumRange*pow(QuantumScale*(double) pixel,value);
+       break;
+     }
+     case RightShiftEvaluateOperator:
+

ImageMagick-gamma-should-call-GammaImage.patch

@@ -0,0 +1,14 @@
+diff --git a/MagickWand/operation.c b/MagickWand/operation.c
+index bbe00a5e5ca..38e3145c321 100644
+--- a/MagickWand/operation.c
++++ b/MagickWand/operation.c
+@@ -2477,7 +2477,7 @@ static MagickBooleanType CLISimpleOperatorImage(MagickCLI *cli_wand,
+           if (IsGeometry(arg1) == MagickFalse)
+             CLIWandExceptArgBreak(OptionError,"InvalidArgument",option,arg1);
+           constant=StringToDouble(arg1,(char **) NULL);
+-#if 0
++#if 1
+           /* Using Gamma, via a cache */
+           if (IfPlusOp)
+             constant=PerceptibleReciprocal(constant);
+