"FabioAng" <fabioangNOSPAM@libero.it> wrote in message
news:f29aga$hfv$1@nnrp-beta.newsland.it...
Is there a way to use always the "unsigned" representation, e.g.
template<typename InputType>
bool is_valid_xml_range(InputType input)
{
UnsignedInputType uinput = input;
if ( ( uinput >= 0x20 ) && ( uinput <= 0xD7FF ) )
return true;
else
return false;
}
You can do it via template specialization
template<class T> struct unsigned_type { typedef T type; };
template<> struct unsigned_type<char> { typedef unsigned char type; };
template<> struct unsigned_type<signed char> { typedef unsigned char
type; };
template<> struct unsigned_type<short> { typedef unsigned short type; };
template<> struct unsigned_type<int> { typedef unsigned int type; };
template<> struct unsigned_type<long> { typedef unsigned long type; };
template<typename InputType>
bool is_valid_xml_range(InputType input)
{
typedef unsigned_type<InputType>::type UnsignedInputType;
UnsignedInputType uinput = input;
if ( ( uinput >= 0x20 ) && ( uinput <= 0xD7FF ) )
return true;
else
return false;
}
- Sylvester