diff --git a/EGnStringUtils.h b/EGnStringUtils.h
index 8cf93e5..5cb5de0 100644
--- a/EGnStringUtils.h
+++ b/EGnStringUtils.h
@@ -1,13 +1,14 @@
 //----------------------------------------------------------------------------
-//  EgalTech 2013-2014
+//  EgalTech 2013-2025
 //----------------------------------------------------------------------------
-// File : EGnStringUtils.h      Data : 17.03.14          Versione : 1.5c2
+// File : EGnStringUtils.h      Data : 18.09.25         Versione : 2.7i1
 // Contenuto : Dichiarazione delle funzioni di utilità per le stringhe.
 //
 //
 //
 // Modifiche : 20.11.13 DS Creazione modulo.
 //             20.10.15 DS Agg. FromString e ToString per std::array<double,N>.
+//             18.09.25 DS Agg. FromString e ToString per long long.
 //
 //----------------------------------------------------------------------------
 
@@ -136,6 +137,10 @@ FromString( const std::string& sVal, unsigned int& nVal)
       { auto answer = fast_float::from_chars_advanced( sVal.data(), sVal.data() + sVal.size(), nVal, FAST_FLOAT_OPTS) ;
         return ( answer.ec == std::errc()  &&  answer.ptr != sVal.data()) ; }
 inline bool
+FromString( const std::string& sVal, long long& nVal)
+      { auto answer = fast_float::from_chars_advanced( sVal.data(), sVal.data() + sVal.size(), nVal, FAST_FLOAT_OPTS) ;
+        return ( answer.ec == std::errc()  &&  answer.ptr != sVal.data()) ; }
+inline bool
 FromString( const std::string& sVal, bool& bVal)
       { int nTmp ;
         if ( ! FromString( sVal, nTmp))
@@ -226,6 +231,27 @@ ToString( unsigned int nVal, int nPrec = 1, int nRadix = 10, int* pnErr = nullpt
             *pnErr = 0 ;
          return szBuff ;
       }
+EGN_EXPORT const std::string ToStringAdv( long long nVal, int nPrec = 1, int nRadix = 10, int* pnErr = nullptr) ;
+inline const std::string
+ToString( long long nVal, int nPrec = 1, int nRadix = 10, int* pnErr = nullptr)
+      {
+        // se necessario processing avanzato
+         if ( nPrec > 1  ||  nRadix < 6)
+            return ToStringAdv( nVal, nPrec, nRadix, pnErr) ;
+        // eseguo conversione
+         const int nBuffSize = 16 ;
+         char szBuff[nBuffSize]{} ;
+         auto Res = std::to_chars( szBuff, szBuff + nBuffSize - 1, nVal, nRadix) ;
+         if ( Res.ec != std::errc()) {
+            if ( pnErr != nullptr)
+               *pnErr = int( Res.ec) ;
+            return "#Error" ;
+         }
+        // gestione codice di errore
+         if ( pnErr != nullptr)
+            *pnErr = 0 ;
+         return szBuff ;
+      }
 template <size_t size>
 const std::string ToString( const int (&nVal)[size], int nPrec = 1)
       { std::string sDest ; sDest.reserve( 8 * size) ;