circleIn          161 src/swfc-history.c 	case IF_CIRCLE_IN: return circleIn(fraction, p1, p2 - p1, inter->slope);
circleIn          112 src/swfc-interpolation.c     return circleIn(1 - fraction, start + delta, -delta, slope);
circleIn          118 src/swfc-interpolation.c         return circleIn(2 * fraction, start, delta / 2, slope);
circleIn           86 src/swfc-interpolation.h float circleIn(float fraction, float start, float delta, float slope);