diff --git a/src/util/stringutil.cpp b/src/util/stringutil.cpp
index 54b15706..f0673984 100644
--- a/src/util/stringutil.cpp
+++ b/src/util/stringutil.cpp
@@ -2,6 +2,7 @@
 
 #include <vector>
 #include <locale>
+#include <iomanip>
 #include <sstream>
 #include <stdexcept>
 #include <algorithm>
@@ -162,3 +163,9 @@ void util::trim(std::string &s) {
     rtrim(s);
     ltrim(s);
 }
+
+std::wstring util::to_wstring(double x, int precision) {
+    std::wstringstream ss;
+    ss << std::fixed << std::setprecision(precision) << x;
+    return ss.str();
+}
diff --git a/src/util/stringutil.h b/src/util/stringutil.h
index b1db1fe8..6a34eac1 100644
--- a/src/util/stringutil.h
+++ b/src/util/stringutil.h
@@ -19,6 +19,8 @@ namespace util {
     extern void ltrim(std::string &s);
     extern void rtrim(std::string &s);
     extern void trim(std::string &s);
+
+    extern std::wstring to_wstring(double x, int precision);
 }
 
 #endif // UTIL_STRINGUTIL_H_
\ No newline at end of file