Config files

src/basic/basic_string16.cpp

@@ -38,6 +38,11 @@ API bool IsDigit(char16_t a) {
     return result;
 }
 
+API bool IsHexDigit(char16_t a) {
+    bool result = a >= u'0' && a <= u'9' || a == 'a' || a == 'b' || a == 'c' || a == 'd' || a == 'e' || a == 'f';
+    return result;
+}
+
 API bool IsAlphanumeric(char16_t a) {
     bool result = IsDigit(a) || IsAlphabetic(a);
     return result;