diff --git a/stepmania/src/RageUtil.cpp b/stepmania/src/RageUtil.cpp
index 38cef6ca0c..92e32d87d1 100644
--- a/stepmania/src/RageUtil.cpp
+++ b/stepmania/src/RageUtil.cpp
@@ -1509,6 +1509,15 @@ float StringToFloat( const RString &sString )
 	return ret;
 }
 
+bool StringToFloat( const RString &sString, float &fOut )
+{
+	char *endPtr;
+	
+	fOut = strtof( sString, &endPtr );
+	return sString.size() && *endPtr == '\0' && isfinite( fOut );
+}
+	
+	
 const wchar_t INVALID_CHAR = 0xFFFD; /* U+FFFD REPLACEMENT CHARACTER */
 
 wstring RStringToWstring( const RString &s )
diff --git a/stepmania/src/RageUtil.h b/stepmania/src/RageUtil.h
index f90471659f..db486ae2ba 100644
--- a/stepmania/src/RageUtil.h
+++ b/stepmania/src/RageUtil.h
@@ -310,6 +310,7 @@ void MakeLower( char *p, size_t iLen );
 void MakeUpper( wchar_t *p, size_t iLen );
 void MakeLower( wchar_t *p, size_t iLen );
 float StringToFloat( const RString &sString );
+bool StringToFloat( const RString &sString, float &fOut );
 
 RString WStringToRString( const wstring &sString );
 RString WcharToUTF8( wchar_t c );