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Full Discussion: Problems with template instantiation in C++
Top Forums Programming Problems with template instantiation in C++ Post 302353481 by Gunther on Tuesday 15th of September 2009 12:08:11 PM
Old 09-15-2009
I'm sorry that I'm answering only now, have been on vacation.

Quote:
and instantiated in line 253.
What are you trying to do in line 253? Call the function? It looks like a wrongly declared function, e.g.
Code:
template istream

doesn't make any sense.
The same thing applies to the code from line 276 onwards.

If you want to instantiate the functions, which simply means calling a templated function with specific data types substituted for the template parameters, you have to pass the actual parameters as you would normally do.

A correct version of intended call starting in line 276 would look like this:
Code:
// Only because istream is a typedef of an instantiation
// of the basic_istream template, the following function
// call is correct.
/* typedef basic_istream<char, char_traits<char> > istream; */

istream& refToIstream = control
/*
    // This part (the explicit template arguments
    // specification) is superfluous, because
    // the data types can be derived from the
    // actual parameters.
    <char, char_traits<char>,                     
    <char, char_traits<char>> >
*/
// This parameters are actual parameters.
// So you must not specify their types.
(
    ...
);

 

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LEARN ABOUT DEBIAN

std::chi_squared_distribution

std::chi_squared_distribution< _RealType >(3cxx)						  std::chi_squared_distribution< _RealType >(3cxx)

NAME

       std::chi_squared_distribution< _RealType > -

SYNOPSIS

   Classes
       struct param_type

   Public Types
       typedef _RealType result_type

   Public Member Functions
       chi_squared_distribution (_RealType __n=_RealType(1))
       chi_squared_distribution (const param_type &__p)
       result_type max () const
       result_type min () const
       _RealType n () const
       template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator &__urng)
       template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator &__urng, const param_type &__p)
       param_type param () const
       void param (const param_type &__param)
       void reset ()

   Friends
       template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT,
	   _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &, const std::chi_squared_distribution< _RealType1 > &)"
       template<typename _RealType1 > bool operator== (const std::chi_squared_distribution< _RealType1 > &__d1, const
	   std::chi_squared_distribution< _RealType1 > &__d2)
       template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_istream< _CharT,
	   _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &, std::chi_squared_distribution< _RealType1 > &)"

Detailed Description
   template<typename _RealType = double>class std::chi_squared_distribution< _RealType >
       A chi_squared_distribution random number distribution.

       The formula for the normal probability mass function is $p(x|n) = ac{x^{(n/2) - 1}e^{-x/2}}{Gamma(n/2) 2^{n/2}}$

       Definition at line 2521 of file random.h.

Member Typedef Documentation
   template<typename _RealType = double> typedef _RealType std::chi_squared_distribution< _RealType >::result_type
       The type of the range of the distribution.

       Definition at line 2528 of file random.h.

Member Function Documentation
   template<typename _RealType = double> result_type std::chi_squared_distribution< _RealType >::max () const [inline]
       Returns the least upper bound value of the distribution.

       Definition at line 2601 of file random.h.

   template<typename _RealType = double> result_type std::chi_squared_distribution< _RealType >::min () const [inline]
       Returns the greatest lower bound value of the distribution.

       Definition at line 2594 of file random.h.

   template<typename _RealType = double> template<typename _UniformRandomNumberGenerator > result_type std::chi_squared_distribution< _RealType
       >::operator() (_UniformRandomNumberGenerator &__urng) [inline]
       Generating functions.

       Definition at line 2609 of file random.h.

   template<typename _RealType = double> param_type std::chi_squared_distribution< _RealType >::param () const [inline]
       Returns the parameter set of the distribution.

       Definition at line 2579 of file random.h.

   template<typename _RealType = double> void std::chi_squared_distribution< _RealType >::param (const param_type &__param) [inline]
       Sets the parameter set of the distribution. Parameters:
	   __param The new parameter set of the distribution.

       Definition at line 2587 of file random.h.

   template<typename _RealType = double> void std::chi_squared_distribution< _RealType >::reset () [inline]
       Resets the distribution state.

       Definition at line 2565 of file random.h.

       References std::gamma_distribution< _RealType >::reset().

Friends And Related Function Documentation
   template<typename _RealType = double> template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_ostream<_CharT, _Traits>&
       operator<< (std::basic_ostream< _CharT, _Traits > &, const std::chi_squared_distribution< _RealType1 > &) [friend]
       Inserts a chi_squared_distribution random number distribution __x into the output stream __os. Parameters:
	   __os An output stream.
	   __x A chi_squared_distribution random number distribution.

       Returns:
	   The output stream with the state of __x inserted or in an error state.

   template<typename _RealType = double> template<typename _RealType1 > bool operator== (const std::chi_squared_distribution< _RealType1 > &__d1,
       const std::chi_squared_distribution< _RealType1 > &__d2) [friend]
       Return true if two Chi-squared distributions have the same parameters and the sequences that would be generated are equal.

       Definition at line 2629 of file random.h.

   template<typename _RealType = double> template<typename _RealType1 , typename _CharT , typename _Traits > std::basic_istream<_CharT, _Traits>&
       operator>> (std::basic_istream< _CharT, _Traits > &, std::chi_squared_distribution< _RealType1 > &) [friend]
       Extracts a chi_squared_distribution random number distribution __x from the input stream __is. Parameters:
	   __is An input stream.
	   __x A chi_squared_distribution random number generator engine.

       Returns:
	   The input stream with __x extracted or in an error state.

Author
       Generated automatically by Doxygen for libstdc++ from the source code.

libstdc++							  Tue Nov 27 2012		  std::chi_squared_distribution< _RealType >(3cxx)
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