error C2912: explicit specialization; ... is not a specialization of a function template

  • Thread starter Thread starter JohnPantango
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JohnPantango

Can anyone give me a simple work around to fix this compiler error on VC7.1

.....cpp(23) : error C2912: explicit specialization; 'bool Equal<_F32>(const
_F32::type,const _F32::type)' is not a specialization of a function template

For this code:

template< class T >
inline bool Equal( const typename T::type v0,
const typename T::type v1 )
{
return v0 == v1;
}


template<>
inline bool Equal< _F32 >( const _F32::type v0, // error occurs at this line

const _F32::type v1 )
{
return fabs( v0 - v1 ) < _F32::epsilon;
}

EnderJSC
 
Can anyone give me a simple work around to fix this compiler error on VC7.1

....cpp(23) : error C2912: explicit specialization; 'bool Equal<_F32>(const
_F32::type,const _F32::type)' is not a specialization of a function template

For this code:

template< class T >
inline bool Equal( const typename T::type v0,
const typename T::type v1 )
{
return v0 == v1;
}


template<>
inline bool Equal< _F32 >( const _F32::type v0, // error occurs at this line

const _F32::type v1 )
{
return fabs( v0 - v1 ) < _F32::epsilon;
}

EnderJSC
Click to expand...
If you change 'typename T::type' in your main template it removes the
error and give a template function which is a lot easier to use ie:

template< class T >
inline bool Equal( const T v0,
const T v1 )
{
return v0 == v1;
}

template<>
inline bool Equal( const _F32::type v0,
const _F32::type v1 )
{
return fabs( v0 - v1 ) < _F32::epsilon;
}

Now the compiler can deduct the template type for most cases so you can
just write:
int a=1;
int b=2;
cout << Equal(a,b) << endl; // Uses general template
_F32::type c=1;
_F32::type d=2;
cout << Equal(c,d) << endl; // Uses specialization

PJakobse
 
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