Avoid calling fmod twice in roundLayoutResultsToPixelGrid

Differential Revision: D67689065

packages/react-native/ReactCommon/yoga/yoga/algorithm/PixelGrid.cpp

@@ -66,7 +66,8 @@ void roundLayoutResultsToPixelGrid(
     yoga::Node* const node,
     const double absoluteLeft,
     const double absoluteTop) {
-  const auto pointScaleFactor = node->getConfig()->getPointScaleFactor();
+  const double pointScaleFactor =
+      static_cast<double>(node->getConfig()->getPointScaleFactor());
 
   const double nodeLeft = node->getLayout().position(PhysicalEdge::Left);
   const double nodeTop = node->getLayout().position(PhysicalEdge::Top);
@@ -80,7 +81,7 @@ void roundLayoutResultsToPixelGrid(
   const double absoluteNodeRight = absoluteNodeLeft + nodeWidth;
   const double absoluteNodeBottom = absoluteNodeTop + nodeHeight;
 
-  if (pointScaleFactor != 0.0f) {
+  if (pointScaleFactor != 0.0) {
     // If a node has a custom measure function we never want to round down its
     // size as this could lead to unwanted text truncation.
     const bool textRounding = node->getNodeType() == NodeType::Text;
@@ -96,12 +97,14 @@ void roundLayoutResultsToPixelGrid(
     // We multiply dimension by scale factor and if the result is close to the
     // whole number, we don't have any fraction To verify if the result is close
     // to whole number we want to check both floor and ceil numbers
+
+    const double scaledNodeWith = nodeWidth * pointScaleFactor;
     const bool hasFractionalWidth =
-        !yoga::inexactEquals(fmod(nodeWidth * pointScaleFactor, 1.0), 0) &&
-        !yoga::inexactEquals(fmod(nodeWidth * pointScaleFactor, 1.0), 1.0);
+        !yoga::inexactEquals(round(scaledNodeWith), scaledNodeWith);
+
+    const double scaledNodeHeight = nodeHeight * pointScaleFactor;
     const bool hasFractionalHeight =
-        !yoga::inexactEquals(fmod(nodeHeight * pointScaleFactor, 1.0), 0) &&
-        !yoga::inexactEquals(fmod(nodeHeight * pointScaleFactor, 1.0), 1.0);
+        !yoga::inexactEquals(round(scaledNodeHeight), scaledNodeHeight);
 
     node->setLayoutDimension(
         roundValueToPixelGrid(