alchem0x2A

#include <iostream>
#include <cstring> //memcpy implemented here

// Copy pointer y from x
void copy_pointer(double *y, const double *x, size_t n){
  // The size in memcpy is byte length!
  std::memcpy(y, x, n * sizeof(double));
}

int main() {

alchem0x2A

#include <iostream>

// Return vector y = x * x
void manipulate(double *y, double *x, size_t n){
  /* x and y must be initialized! */
  std::cout << "Inside the function" << std::endl;
  std::cout << "Size of x?: " << 
            sizeof(x) << " " 
            << "Size of y?: " 
            <<sizeof(y) 

alchem0x2A

#include <algorithm>
#include <iostream>
#include <random>

int main() {
	std::mt19937_64 gen(42);
	std::uniform_real_distribution<double> uni(-10.0, 10.0);
	double *numbers = new double[20];
    /*use std::generate to fill the array pointer with lambda function*/
	std::generate(numbers, &numbers[20], 

alchem0x2A

#include <random>
#include <iostream>
 
int main()
{
    std::random_device device;
    /* Or use any number replace the device() */
    std::mt19937 generator(device());  
    std::uniform_int_distribution<int> distribution(1,6);