convert_to_number not called string_to_number, fixed usage of .fail enabling...

convert_to_number not called string_to_number, fixed usage of .fail enabling use for int double and other arithmetic types

src/util_string.h

@@ -62,17 +62,17 @@ string_contains(const std::string &s, unsigned char ch)
   return (s.find(ch) != std::string::npos);
 }
 
-template <typename T>
-std::pair<bool, T>
-convert_to_number(const std::string &str)
+template <typename Precission>
+std::pair<bool, Precission>
+string_to_number(const std::string &str)
 {
-  static_assert(std::is_same<T, double>::value || std::is_same<T, float>::value,
+  static_assert(std::is_arithmetic<Precission>::value,
                 "tokenize_comma_seperated_number_list can only produce float or double lists");
   std::stringstream ss(str);
-  T number = 0;
+  Precission number = 0;
   ss >> number;
 
-  if (ss.fail()) { return { false, 0 }; }
+  if (ss.good()) { return { false, 0 }; }
 
   return { true, number };
 }