initial commit

lib_standalone/ArduinoJson/extras/tests/MsgPackDeserializer/doubleToFloat.cpp

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+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2020
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+using namespace ARDUINOJSON_NAMESPACE;
+
+template <typename T>
+static void check(const char* input, T expected) {
+  T actual;
+  uint8_t* f = reinterpret_cast<uint8_t*>(&actual);
+  const uint8_t* d = reinterpret_cast<const uint8_t*>(input);
+  doubleToFloat(d, f);
+  fixEndianess(actual);
+  CHECK(actual == expected);
+}
+
+TEST_CASE("doubleToFloat()") {
+  check("\x40\x09\x21\xCA\xC0\x83\x12\x6F", 3.1415f);
+  check("\x00\x00\x00\x00\x00\x00\x00\x00", 0.0f);
+  check("\x80\x00\x00\x00\x00\x00\x00\x00", -0.0f);
+  check("\xC0\x5E\xDC\xCC\xCC\xCC\xCC\xCD", -123.45f);
+}