2 files changed, 14 insertions, 0 deletions
diff --git a/src/lib/util/str.cc b/src/lib/util/str.cc
index 093cd0580b..0bb7e8f67f 100644
--- a/src/lib/util/str.cc
+++ b/src/lib/util/str.cc
@@ -340,6 +340,13 @@ dumpAsHex(const uint8_t* data, size_t length) {
     return (output.str());
 }
 
+string
+dumpDouble(double val, size_t precision) {
+    std::stringstream oss;
+    oss << setprecision(precision) << val;
+    return (oss.str());
+}
+
 }  // namespace str
 }  // namespace util
 }  // namespace isc
diff --git a/src/lib/util/str.h b/src/lib/util/str.h
index bd5587d717..c89294dc11 100644
--- a/src/lib/util/str.h
+++ b/src/lib/util/str.h
@@ -286,6 +286,13 @@ isPrintable(const std::vector<uint8_t>& content);
 std::string
 dumpAsHex(const uint8_t* data, size_t length);
 
+/// @brief Converts a double to a string with given precision
+///
+/// @param val double to convert
+/// @param precision number of maxium number decimal places to output
+/// @return string representaion of val
+std::string dumpDouble(double val, size_t precision = 5);
+
 }  // namespace str
 }  // namespace util
 }  // namespace isc