fix: applied fixes for g++

fastmath.hpp

@@ -1,11 +1,12 @@
 #ifndef FASTMATH_H
 #define FASTMATH_H
 
-#include <iostream>
 #include <math.h>
+#include <iostream>
 #include <stdint.h>
 #include <stdlib.h>
 #include <vector>
+#include <iostream>
 #define SHIFT_AMOUNT 16
 #define HALF_SHIFT (SHIFT_AMOUNT / 2)
 
@@ -26,7 +27,7 @@ struct decimal {
     decimal(double i) : i(TO_INT(i)) {}
     decimal(int32_t i) : i(i) {}
 
-    friend std::ostream &operator<<(std::ostream &os, const decimal &d) {
+    friend std::ostream& operator<<(std::ostream& os, const decimal &d) {
         return (os << TO_FLOAT(d.i));
     }