Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

Tests/LottieMetalTest/LottieSwift/Sources/Public/Keyframes/Interpolatable.cpp

@@ -0,0 +1,15 @@
+#include "Interpolatable.hpp"
+
+namespace lottie {
+
+double remapDouble(double value, double fromLow, double fromHigh, double toLow, double toHigh) {
+    return toLow + (value - fromLow) * (toHigh - toLow) / (fromHigh - fromLow);
+}
+
+double clampDouble(double value, double a, double b) {
+    double minValue = a <= b ? a : b;
+    double maxValue = a <= b ? b : a;
+    return std::max(std::min(value, maxValue), minValue);
+}
+
+}