447       mask_alpha;  in ClipPixelCacheNexus()  local
454     mask_alpha=QuantumScale*GetPixelWriteMask(image,p);  in ClipPixelCacheNexus()
455     if (fabs(mask_alpha) >= MagickEpsilon)  in ClipPixelCacheNexus()
463           q[i]=ClampToQuantum(MagickOver_((double) p[i],mask_alpha*  in ClipPixelCacheNexus()
3401     mask_alpha;  in ApplyPixelCompositeMask()  local
3405   mask_alpha=1.0-QuantumScale*QuantumScale*alpha*beta;  in ApplyPixelCompositeMask()
3406   mask_alpha=PerceptibleReciprocal(mask_alpha);  in ApplyPixelCompositeMask()
3407   return(ClampToQuantum(mask_alpha*MagickOver_((double) p,alpha,(double) q,beta)));  in ApplyPixelCompositeMask()
3449       mask_alpha;  in MaskPixelCacheNexus()  local
3456     mask_alpha=(double) GetPixelCompositeMask(image,p);  in MaskPixelCacheNexus()
3463       q[i]=ApplyPixelCompositeMask(p[i],mask_alpha,q[i],  in MaskPixelCacheNexus()