backOut           174 src/swfc-history.c 		case IF_BACK_OUT: return backOut(fraction, p1, p2 - p1, inter->speed);
backOut           196 src/swfc-interpolation.c     return backOut(2 * fraction - 1, start + delta / 2, delta / 2, speed);
backOut           103 src/swfc-interpolation.h float backOut(float fraction, float start, float delta, float speed);