diff --git a/StringUtils.cpp b/StringUtils.cpp
index cbaea53..db4f68c 100644
--- a/StringUtils.cpp
+++ b/StringUtils.cpp
@@ -71,25 +71,26 @@ FromString( const string& sVal, DBLVECTOR& vdVal)
 {
   // pulisco il vettore dei risultati
    vdVal.clear() ;
-  // reset errori di conversione
-   errno = 0 ;
-  // ciclo sui caratteri della stringa
-   const char* pStart = sVal.c_str() ;
-   SkipSpaces( pStart) ;
-   while ( ( *pStart >= '0'  &&  *pStart <= '9')  ||
-           *pStart == '+'  ||  *pStart == '-'  ||  *pStart == '.') {
-      char* pStop ;
-      double dVal = strtod( pStart, &pStop) ;
-      vdVal.push_back( dVal) ;
-      SkipSpaces( pStop) ;
-      if ( *pStop == '\0'  &&  errno == 0)
-         return true ;
-      if ( *pStop != ','  ||  errno != 0)
+  // ciclo sulla stringa
+   const char* pFirst = sVal.data() ;
+   while ( true) {
+      double dVal ;
+      auto answer = fast_float::from_chars( pFirst, sVal.data() + sVal.size(), dVal, FAST_FLOAT_FMT) ;
+      if ( answer.ec != std::errc())
          return false ;
-      pStart = pStop + 1 ;
-      SkipSpaces( pStart) ;
+      vdVal.push_back( dVal) ;
+      const char* pLast = answer.ptr ;
+      SkipSpaces( pLast) ;
+      if ( pLast[0] == '\0')
+         return true ;
+      if ( pLast[0] != ',')
+         return false ;
+      pFirst = pLast + 1 ;
+      SkipSpaces( pFirst) ;
+      if ( pFirst[0] == '\0')
+         return true ;
    }
-   return ( *pStart == '\0'  &&  errno == 0) ;
+   return true ;
 }
 
 //----------------------------------------------------------------------------