/*Write an ARM assembly functions for the following expressions.
1.      (val_a >> 4) & val_b        	
Parameters: val_a, val_b, n=4 ------- (unsigned int)
 2.      (val_a << 8) | (~val_b)
Parameters: val_a, val_b, n=8 ------ (unsigned int)
3.      (sVal_a >> 2) & (~sVal_b)
Parameters: sVal_a, sVal_b, n=2 ------ (signed int)
 4.      (~sVal_a >> 5) ^ (sVal_b)
Parameters: sVal_a, sVal_b, n=5 ------ (signed int) */
#include <stdio.h>
#include <stdlib.h>

extern "C"{
  unsigned int asm_1(int val_a,int val_b);
  unsigned int asm_2(int val_a,int val_b);
  signed int asm_3(int sval_a,int sval_b);
  signed int asm_4(int sval_a,int sval_b);
}

void setup() {
  // put your setup code here, to run once:
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  unsigned int asm_ret_val1;
  unsigned int asm_ret_val2;
  signed int asm_ret_val3;
  signed int asm_ret_val4;
  int val_a,val_b,sval_a,sval_b;

  printf("Enter (unsigned) a: ");
  scanf("%d",&val_a);
  printf("%d\n",val_a);

  printf("Enter (unsigned) b: ");
  scanf("%d",&val_b);
  printf("%d\n",val_b);

  printf("Enter (signed) a: ");
  scanf("%d",&sval_a);
  printf("%d\n",sval_a);

  printf("Enter (signed) b: ");
  scanf("%d",&sval_b);
  printf("%d\n",sval_b);

  asm_ret_val1 = asm_1(val_a,val_b);
  asm_ret_val2 = asm_2(val_a,val_b);
  asm_ret_val3 = asm_3(sval_a,sval_b);
  asm_ret_val4 = asm_4(sval_a,sval_b);

  printf("\n");
  printf("asm1 : %d\n",asm_ret_val1);
  printf("asm2 : %d\n",asm_ret_val2);
  printf("asm3 : %d\n",asm_ret_val3);
  printf("asm4 : %d\n",asm_ret_val4);
  printf("\n");

}