/*Write an ARM assembly function that performs 4 times logical shift left operation 
on one parameter and returns the result to a calling C program. */
#include <stdio.h>
#include <stdlib.h>

extern "C"{
   int left_shift_asm(int x); //2 parameters.
}

void setup() {
  Serial1.begin(9600); //initialising the serial port.
}

int main()
{
  int x,result;
  printf("Enter the value: ");
  scanf("%d",&x);
  printf("%d\n",x); //to make sure it shows up on the serial monitor.

  result = left_shift_asm(x);
  printf("\nResult of logical shift left by 4: : %d \n",result);
}