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Fix error in Animated Interpolation when inputMin === inputMax

This is already handled cleanly on the JS side of things in AnimatedInterpolation.js:

However, the native driver interpolation will try to divide by 0, produce NaN and then crash. This change just copies the logic from the JS version of the interpolation logic and adds it to the Java version.

Note that this bug only reproduces on Android Q. It seems that RenderNode::setCameraDistance now crashes when receiving NaN on Android Q.

Reviewed By: sahrens

Differential Revision: D15380844

fbshipit-source-id: cfa82d8f58574e1040a851aaa5b5af1e23c9daa8
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olegbl authored and facebook-github-bot committed May 17, 2019
1 parent d993089 commit 7abfd23b90db08b426c3c91b0cb6d01d161a9b9e
@@ -71,6 +71,17 @@ private static double interpolate(

if (outputMin == outputMax) {
return outputMin;

if (inputMin == inputMax) {
if (value <= inputMin) {
return outputMin;
return outputMax;

return outputMin + (outputMax - outputMin) *
(result - inputMin) / (inputMax - inputMin);

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