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diff --git a/MagickCore/enhance.c b/MagickCore/enhance.c
index 0a5b337c8f9de721101ee1b22ab1f7c108f1a146..198f8cbf163442a166c4913cee4906e32fdd3ed9 100644 (file)
--- a/MagickCore/enhance.c
+++ b/MagickCore/enhance.c
@@ -3315,7 +3315,7 @@ MagickExport MagickBooleanType SigmoidalContrastImage(Image *image,
     case values are left alone.
   */
   /*
-    Sigmoidal function Sigmoidal with inflexion point moved to b and "slope
+    Sigmoidal function with inflexion point moved to b and "slope
     constant" set to a.
     The first version, based on the hyperbolic tangent tanh, when
     combined with the scaling step, is an exact arithmetic clone of the
@@ -3326,11 +3326,10 @@ MagickExport MagickBooleanType SigmoidalContrastImage(Image *image,
     scaled sigmoidal derivation is invariant under affine transformations
     of the ordinate.
     The tanh version is almost certainly more accurate and cheaper.
-    The 0.5 factor in the argument is to clone the legacy ImageMagick
-    behavior.
-    The reason for making the define depend on atanh even though it only
-    uses tanh has to do with the construction of the inverse of the scaled
-    sigmoidal.
+    The 0.5 factor in its argument is to clone the legacy ImageMagick
+    behavior.  The reason for making the define depend on atanh even
+    though it only uses tanh has to do with the construction of the
+    inverse of the scaled sigmoidal.
   */
 #if defined(MAGICKCORE_HAVE_ATANH)
 #define Sigmoidal(a,b,x) ( tanh((0.5*(a))*((x)-(b))) )