fx               1010 Magick++/lib/Magick++/Image.h     void fx(const std::string expression);
fx               1011 Magick++/lib/Magick++/Image.h     void fx(const std::string expression,const Magick::ChannelType channel);
fx               2641 magick/distort.c             double r,fx,fy,gx,gy;
fx               2647 magick/distort.c               fx = ((coeff[0]*r + coeff[1])*r + coeff[2])*r + coeff[3];
fx               2653 magick/distort.c                 fx = 1/fx;  fy = 1/fy;
fx               2654 magick/distort.c                 gx *= -fx*fx;  gy *= -fy*fy;
fx               2657 magick/distort.c               s.x = d.x*fx + coeff[8];
fx               2660 magick/distort.c                   gx*d.x*d.x + fx, gx*d.x*d.y,