exprtk::details::vec_mul_op< T > Struct Template Reference

#include <exprtk.hpp>

Public Types
typedef vector_interface< T > *	ivector_ptr

Static Public Member Functions
static T	process (const ivector_ptr v)

Detailed Description

template<typename T>
struct exprtk::details::vec_mul_op< T >

Definition at line 16753 of file exprtk.hpp.

Member Typedef Documentation

ivector_ptr

template<typename T>

typedef vector_interface<T>* exprtk::details::vec_mul_op< T >::ivector_ptr

Definition at line 16755 of file exprtk.hpp.

Member Function Documentation

process()

template<typename T>

T exprtk::details::vec_mul_op< T >::process ( const ivector_ptr v )

inlinestatic

Definition at line 16757 of file exprtk.hpp.

         {
            const T* vec = v->vec()->vds().data();
            const std::size_t vec_size = v->vec()->size();
 
            loop_unroll::details lud(vec_size);
 
            if (vec_size <= static_cast<std::size_t>(lud.batch_size))
            {
               T result = T(1);
               int i    = 0;
 
               switch (vec_size)
               {
                  #define case_stmt(N,fall_through) \
                  case N : result *= vec[i++];      \
                  fall_through                      \
 
                  #ifndef exprtk_disable_superscalar_unroll
                  case_stmt(16, exprtk_fallthrough) case_stmt(15, exprtk_fallthrough)
                  case_stmt(14, exprtk_fallthrough) case_stmt(13, exprtk_fallthrough)
                  case_stmt(12, exprtk_fallthrough) case_stmt(11, exprtk_fallthrough)
                  case_stmt(10, exprtk_fallthrough) case_stmt( 9, exprtk_fallthrough)
                  case_stmt( 8, exprtk_fallthrough) case_stmt( 7, exprtk_fallthrough)
                  case_stmt( 6, exprtk_fallthrough) case_stmt( 5, exprtk_fallthrough)
                  #endif
                  case_stmt( 4, exprtk_fallthrough) case_stmt( 3, exprtk_fallthrough)
                  case_stmt( 2, exprtk_fallthrough) case_stmt( 1, (void)0;)
               }
 
               #undef case_stmt
 
               return result;
            }
 
            T r[] = {
                      T(1), T(1), T(1), T(1), T(1), T(1), T(1), T(1),
                      T(1), T(1), T(1), T(1), T(1), T(1), T(1), T(1)
                    };
 
            const T* upper_bound = vec + lud.upper_bound;
 
            while (vec < upper_bound)
            {
               #define exprtk_loop(N) \
               r[N] *= vec[N];        \
 
               exprtk_loop( 0) exprtk_loop( 1)
               exprtk_loop( 2) exprtk_loop( 3)
               #ifndef exprtk_disable_superscalar_unroll
               exprtk_loop( 4) exprtk_loop( 5)
               exprtk_loop( 6) exprtk_loop( 7)
               exprtk_loop( 8) exprtk_loop( 9)
               exprtk_loop(10) exprtk_loop(11)
               exprtk_loop(12) exprtk_loop(13)
               exprtk_loop(14) exprtk_loop(15)
               #endif
 
               vec += lud.batch_size;
            }
 
            int i = 0;
 
            switch (lud.remainder)
            {
               #define case_stmt(N,fall_through) \
               case N : r[0] *= vec[i++];        \
               fall_through                      \
 
               #ifndef exprtk_disable_superscalar_unroll
               case_stmt(15, exprtk_fallthrough) case_stmt(14, exprtk_fallthrough)
               case_stmt(13, exprtk_fallthrough) case_stmt(12, exprtk_fallthrough)
               case_stmt(11, exprtk_fallthrough) case_stmt(10, exprtk_fallthrough)
               case_stmt( 9, exprtk_fallthrough) case_stmt( 8, exprtk_fallthrough)
               case_stmt( 7, exprtk_fallthrough) case_stmt( 6, exprtk_fallthrough)
               case_stmt( 5, exprtk_fallthrough) case_stmt( 4, exprtk_fallthrough)
               #endif
               case_stmt( 3, exprtk_fallthrough) case_stmt( 2, exprtk_fallthrough)
               case_stmt( 1, (void)0;)
            }
 
            #undef exprtk_loop
            #undef case_stmt
 
            return (r[ 0] * r[ 1] * r[ 2] * r[ 3])
                   #ifndef exprtk_disable_superscalar_unroll
                 * (r[ 4] * r[ 5] * r[ 6] * r[ 7])
                 * (r[ 8] * r[ 9] * r[10] * r[11])
                 * (r[12] * r[13] * r[14] * r[15])
                   #endif
                   ;
         }

References exprtk::details::loop_unroll::details::batch_size, case_stmt, exprtk::details::vec_data_store< T >::data(), exprtk_fallthrough, exprtk_loop, exprtk::details::nodetype_T0oT1< T, T0, T1 >::result, exprtk::details::loop_unroll::details::remainder, exprtk::details::vector_node< T >::size(), exprtk::details::loop_unroll::details::upper_bound, exprtk::details::vector_node< T >::vds(), and exprtk::details::vector_interface< T >::vec().

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

• exprtk/exprtk.hpp