much simpler solution

src/Structure/SDDSColumn.cpp

@@ -38,43 +38,7 @@ void SDDSColumn::writeValue(std::ostream& os) const {
                             "value for column '" + name_m + "' isn't set");
     }
 
-    std::set<std::ios_base::fmtflags> independentFlags({std::ios_base::boolalpha,
-                                                        std::ios_base::showbase,
-                                                        std::ios_base::showpoint,
-                                                        std::ios_base::showpos,
-                                                        std::ios_base::skipws,
-                                                        std::ios_base::unitbuf,
-                                                        std::ios_base::uppercase});
-    std::set<std::ios_base::fmtflags> numericalBase({std::ios_base::dec,
-                                                     std::ios_base::hex,
-                                                     std::ios_base::oct});
-    std::set<std::ios_base::fmtflags> floatFormat({std::ios_base::fixed,
-                                                   std::ios_base::scientific});
-    std::set<std::ios_base::fmtflags> adjustmentFlags({std::ios_base::internal,
-                                                       std::ios_base::left,
-                                                       std::ios_base::right});
-
-    for (std::ios_base::fmtflags flag: independentFlags){
-        if (writeFlags_m & flag) {
-            os.setf(flag);
-        }
-    }
-    for (std::ios_base::fmtflags flag: numericalBase) {
-        if (writeFlags_m & flag) {
-            os.setf(flag, std::ios_base::basefield);
-        }
-    }
-    for (std::ios_base::fmtflags flag: floatFormat) {
-        if (writeFlags_m & flag) {
-            os.setf(flag, std::ios_base::floatfield);
-        }
-    }
-    for (std::ios_base::fmtflags flag: adjustmentFlags) {
-        if (writeFlags_m & flag) {
-            os.setf(flag, std::ios_base::adjustfield);
-        }
-    }
-
+    os.flags(writeFlags_m);
     os.precision(writePrecision_m);
     os << value_m << std::setw(10) << "\t";
     set_m = false;