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node_modules/react-native/ReactCommon/react/renderer/graphics/DoubleConversions.cpp

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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "DoubleConversions.h"
+
+#include <double-conversion/double-conversion.h>
+#include <array>
+
+namespace facebook::react {
+
+std::string toString(double doubleValue, char suffix) {
+  // Format taken from folly's toString
+  static double_conversion::DoubleToStringConverter conv(
+      0,
+      nullptr,
+      nullptr,
+      'E',
+      -6, // detail::kConvMaxDecimalInShortestLow,
+      21, // detail::kConvMaxDecimalInShortestHigh,
+      6, // max leading padding zeros
+      1); // max trailing padding zeros
+  std::array<char, 256> buffer{};
+  double_conversion::StringBuilder builder(buffer.data(), buffer.size());
+  if (!conv.ToShortest(doubleValue, &builder)) {
+    // Serialize infinite and NaN as 0
+    builder.AddCharacter('0');
+  }
+  if (suffix != '\0') {
+    builder.AddCharacter(suffix);
+  }
+  return builder.Finalize();
+}
+
+} // namespace facebook::react