Method process

src/PonyVCO.cpp:46–50

class FoldStage2 {
public:
	T process(T x) {
		const T y = simd::ifelse(simd::abs(x - xPrev) < 1e-5, f(0.5 * (xPrev + x)), (F(x) - F(xPrev)) / (x - xPrev));
		xPrev = x;
		return y;
	}

	static T f(T x) {
		return simd::ifelse(-(x + 2) > c, c, simd::ifelse(x < -1, -(x + 2), simd::ifelse(x < 1, x, simd::ifelse(-x + 2 > -c, -x + 2, -c))));