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doc/examples/basic_json__number_float_t.cpp

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+#include <json.hpp>
+
+using namespace nlohmann;
+
+int main()
+{
+    // create values of different floating-point types
+    json::number_float_t v_ok = 3.141592653589793;
+    json::number_float_t v_nan = NAN;
+    json::number_float_t v_infinity = INFINITY;
+
+    // create JSON numbers
+    json j_ok(v_ok);
+    json j_nan(v_nan);
+    json j_infinity(v_infinity);
+
+    // serialize the JSON numbers
+    std::cout << j_ok << '\n';
+    std::cout << j_nan << '\n';
+    std::cout << j_infinity << '\n';
+}