12-numcxx-sharedptr.cxx File Reference

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Functions
void	initialize (numcxx::DArray1 &X)
double	sum_elements (numcxx::DArray1 &X)
int	main ()

Function Documentation

void initialize

(

numcxx::DArray1 &

X

)

Examples:

12-numcxx-sharedptr.cxx.

Definition at line 13 of file 12-numcxx-sharedptr.cxx.

{
  const int n=X.size();
  for (int i=0;i<n;i++) X(i)= 1.0/(double)(1+n-i);
}

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double sum_elements

(

numcxx::DArray1 &

X

)

Examples:

12-numcxx-sharedptr.cxx.

Definition at line 20 of file 12-numcxx-sharedptr.cxx.

{
  double sum=0;
  for (int i=0;i<X.size();i++)sum+=X(i);
  return sum;
}

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int main

(

void

)

Examples:

12-numcxx-sharedptr.cxx.

Definition at line 27 of file 12-numcxx-sharedptr.cxx.

{
  const int n=1.0e7;
  // call constructor and wrap pointer into smart pointer
  auto pX=numcxx::TArray1<double>::create(n);
  initialize(*pX);  // dereference pointer to obtain reference
  double s=sum_elements(*pX); // dereference pointer to obtain reference
  printf("sum=%e\n",s);
  // smartpointer calls destructor if reference count
  // reaches zero
}

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