randu< T > Class Template Reference

Inheritance diagram for randu< T >:

Collaboration diagram for randu< T >:

Public Types
typedef exprtk::igeneric_function< T >	igfun_t
typedef igfun_t::parameter_list_t	parameter_list_t
typedef igfun_t::generic_type	generic_type
typedef generic_type::vector_view	vector_t
Public Types inherited from exprtk::igeneric_function< T >
enum	return_type { e_rtrn_scalar = 0 , e_rtrn_string = 1 , e_rtrn_overload = 2 }
typedef T	type
typedef type_store< T >	generic_type
typedef generic_type::parameter_list	parameter_list_t

Public Member Functions
	randu ()
T	operator() (const std::size_t &ps_index, parameter_list_t parameters)
Public Member Functions inherited from exprtk::igeneric_function< T >
	igeneric_function (const std::string &param_seq="", const return_type rtr_type=e_rtrn_scalar)
virtual	~igeneric_function ()
virtual T	operator() (parameter_list_t)
virtual T	operator() (std::string &, parameter_list_t)
virtual T	operator() (const std::size_t &, std::string &, parameter_list_t)
Public Member Functions inherited from exprtk::function_traits
	function_traits ()
bool &	allow_zero_parameters ()
bool &	has_side_effects ()
std::size_t &	min_num_args ()
std::size_t &	max_num_args ()

Private Member Functions
T	rnd ()

Additional Inherited Members
Public Attributes inherited from exprtk::igeneric_function< T >
std::string	parameter_sequence
return_type	rtrn_type

Detailed Description

template<typename T>
class randu< T >

Definition at line 29 of file exprtk_simple_example_19.cpp.

Member Typedef Documentation

generic_type

template<typename T >

typedef igfun_t::generic_type randu< T >::generic_type

Definition at line 35 of file exprtk_simple_example_19.cpp.

igfun_t

template<typename T >

typedef exprtk::igeneric_function<T> randu< T >::igfun_t

Definition at line 33 of file exprtk_simple_example_19.cpp.

parameter_list_t

template<typename T >

typedef igfun_t::parameter_list_t randu< T >::parameter_list_t

Definition at line 34 of file exprtk_simple_example_19.cpp.

vector_t

template<typename T >

typedef generic_type::vector_view randu< T >::vector_t

Definition at line 36 of file exprtk_simple_example_19.cpp.

Constructor & Destructor Documentation

randu()

template<typename T >

randu< T >::randu ( )

inline

Definition at line 40 of file exprtk_simple_example_19.cpp.

   : exprtk::igeneric_function<T>("V|VTT")
     /*
        Overloads:
        0. V   - vector
        1. VTT - vector, r0, r1
     */
   { ::srand(static_cast<unsigned int>(time(NULL))); }

Member Function Documentation

operator()()

template<typename T >

T randu< T >::operator() ( const std::size_t &  ps_index, parameter_list_t  parameters  )

inlinevirtual

Reimplemented from exprtk::igeneric_function< T >.

Definition at line 49 of file exprtk_simple_example_19.cpp.

   {
      vector_t v(parameters[0]);
 
      std::size_t r0 = 0;
      std::size_t r1 = v.size() - 1;
 
      using namespace exprtk::rtl::vecops::helper;
 
      if (
           (1 == ps_index) &&
           !load_vector_range<T>::process(parameters, r0, r1, 1, 2, 0)
         )
         return T(0);
 
      for (std::size_t i = r0; i <= r1; ++i)
      {
         v[i] = rnd();
      }
 
      return T(1);
   }

References randu< T >::rnd(), and exprtk::type_store< T >::type_view< ViewType >::size().

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rnd()

template<typename T >

T randu< T >::rnd ( )

inlineprivate

Definition at line 74 of file exprtk_simple_example_19.cpp.

   {
      // Note: Do not use this in production
      // Result is in the interval [0,1)
      return T(::rand() / T(RAND_MAX + 1.0));
   }

Referenced by randu< T >::operator()().

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The documentation for this class was generated from the following file:

• exprtk/exprtk_simple_example_19.cpp