GetBlurKernel     714 magick/effect.c     width=GetBlurKernel((int) (2*ceil(radius)+1),sigma,&kernel);
GetBlurKernel     721 magick/effect.c       width=GetBlurKernel(3,sigma,&kernel);
GetBlurKernel     728 magick/effect.c           width=GetBlurKernel(width+2,sigma,&kernel);