248 float reverseMapStart(float overscroll, float input) {  in reverseMapStart()  argument
249     float numerator = (-input * overscroll * overscroll) -  in reverseMapStart()
250         (2 * input * overscroll) - input;  in reverseMapStart()
251     float denominator = 1.f + (.3f * overscroll) +  in reverseMapStart()
252         (.7f * input * overscroll * overscroll) + (.7f * input * overscroll);  in reverseMapStart()
264 float reverseMapEnd(float overscroll, float input) {  in reverseMapEnd()  argument
265     float numerator = (.3f * overscroll * overscroll) -  in reverseMapEnd()
266         (.3f * input * overscroll * overscroll) +  in reverseMapEnd()
267         (1.3f * input * overscroll) - overscroll - input;  in reverseMapEnd()
268     float denominator = (.7f * input * overscroll * overscroll) -  in reverseMapEnd()
269         (.7f * input * overscroll) - (.7f * overscroll * overscroll) +  in reverseMapEnd()
270         overscroll - 1.f;  in reverseMapEnd()
285 float computeReverseOverscroll(float overscroll, float normalizedInput) {  in computeReverseOverscroll()  argument
286     float distanceStretched = 1.f / (1.f + abs(overscroll));  in computeReverseOverscroll()
288     if (overscroll > 0) {  in computeReverseOverscroll()
289         float output = reverseMapStart(overscroll, normalizedInput);  in computeReverseOverscroll()
297     if (overscroll < 0) {  in computeReverseOverscroll()
298         float output = reverseMapEnd(overscroll, normalizedInput);  in computeReverseOverscroll()