[core] use rapidjson's dtoa implementation to stringify floating point numbers

1 files changed, 22 insertions, 0 deletions

diff --git a/src/mbgl/util/dtoa.hpp b/src/mbgl/util/dtoa.hpp
new file mode 100644
index 0000000000..00c2c25ce2
--- /dev/null
+++ b/src/mbgl/util/dtoa.hpp
@@ -0,0 +1,22 @@
+#ifndef MBGL_UTIL_DTOA
+#define MBGL_UTIL_DTOA
+
+#include <string>
+
+namespace mbgl {
+namespace util {
+
+char* dtoa(double value, char* buffer);
+
+inline std::string dtoa(double value) {
+    std::string data;
+    data.resize(25);
+    auto end = dtoa(value, const_cast<char*>(data.data()));
+    data.resize(end - data.data());
+    return data;
+}
+
+} // end namespace util
+} // end namespace mbgl
+
+#endif