Difference 457 magick/composite.c composite->red=gamma*Difference(p->red,Sa,q->red,Da); Difference 458 magick/composite.c composite->green=gamma*Difference(p->green,Sa,q->green,Da); Difference 459 magick/composite.c composite->blue=gamma*Difference(p->blue,Sa,q->blue,Da); Difference 461 magick/composite.c composite->index=gamma*Difference(p->index,Sa,q->index,Da);