convert signed int to unsigned int

[Siemel Naran]

Hi. Is there a way to convert the type signed int to the type unsigned int,
char to unsigned char, signed char to unsigned char, and so on for all the
fundamental integer types? Something like

template <>
struct to_unsigned<sig ned int> : public std::unary_func tion<signed int,
unsigned int>
{
unsigned int operator()(sign ed int x) const { return x; }
};

template <>
struct to_unsigned<uns igned int> : public std::unary_func tion<unsigned int,
unsigned int>
{
unsigned int operator()(unsi gned int x) const { return x; }
};

template <>
struct to_unsigned<cha r> : public std::unary_func tion<char, unsigned char>
{
unsigned char operator()(char x) const { return x; }
};

template <>
struct to_unsigned<sig ned char> : public std::unary_func tion<signed char,
unsigned char>
{
unsigned char operator()(sign ed char x) const { return x; }
};

template <>
struct to_unsigned<uns igned char> : public std::unary_func tion<unsigned
char, unsigned char>
{
unsigned char operator()(unsi gned char x) const { return x; }
};

But I'd like to cover all the fundamental integer types (where do they end:
at long or long long or long long long). Also, is there a way to do it that
involves less typing? Also, I want tounsigned<doub le> to not have a typedef
result defined.

Thanks.

[Jonathan Mcdougall]

Siemel Naran wrote:

Hi. Is there a way to convert the type signed int to the type unsigned int,
char to unsigned char, signed char to unsigned char, and so on for all the
fundamental integer types? Something like

Hum... there's an implicit type conversion between signed and unsigned.
Jonathan

[Siemel Naran]

"Jonathan Mcdougall" <jo************ ***@DELyahoo.ca > wrote in message
news:Oosqd.2186 2

Siemel Naran wrote:

Hi. Is there a way to convert the type signed int to the type unsigned int, char to unsigned char, signed char to unsigned char, and so on for all the fundamental integer types? Something like

Hum... there's an implicit type conversion between signed and unsigned.

True, but I want to write a template class as in my previous post, so that I
can write generic code. The generic code will take a reference to a type T,
be it a signed or unsigned integer, and convert it to a reference to an
unsigned integer. So I need to have the type spelled out for the
reinterpret_cas t.

[Ioannis Vranos]

Siemel Naran wrote:

True, but I want to write a template class as in my previous post, so that I
can write generic code. The generic code will take a reference to a type T,
be it a signed or unsigned integer, and convert it to a reference to an
unsigned integer. So I need to have the type spelled out for the
reinterpret_cas t.

I can not understand why you need these, but what you are essentially
trying to define is a cast. The language provided ones are sufficient
for your case, in case you really want to use a cast.

--
Ioannis Vranos

http://www23.brinkster.com/noicys