GetOptimalKernelWidth 1616 magick/effect.c   width=GetOptimalKernelWidth(radius,0.5);
GetOptimalKernelWidth 1689 magick/effect.c   width=GetOptimalKernelWidth(radius,0.5);
GetOptimalKernelWidth 3676 magick/effect.c   width=GetOptimalKernelWidth(radius,sigma);
GetOptimalKernelWidth  964 magick/fx.c      width=GetOptimalKernelWidth(radius,0.5);
GetOptimalKernelWidth   29 magick/gem.h     GetOptimalKernelWidth(const double,const double),