Update Stream.cpp

teensy4/Stream.cpp

@@ -197,7 +197,7 @@ float Stream::parseFloat(char skipChar){
     else if(c >= '0' && c <= '9')  {      // is c a digit?
       value = value * 10 + c - '0';
       if(isFraction)
-         fraction *= 0.1;
+         fraction *= 0.1f;
     }
     read();  // consume the character we got with peek
     c = timedPeek();