Bitwise Addition

Author: abhinav-bhardwaj

bitwise_addition.py

@@ -0,0 +1,60 @@
+def calclen(num1,num2):
+    a = len(num1)
+    b = len(num2)
+    if a!=b :
+        if a>b:
+            for _ in range(a-b):
+                num2='0'+num2
+        else:
+            for _ in range(b-a):
+                num1='0'+num1
+    return num1,num2
+
+def fromdectobin(num,baseA,baseB):
+    strr=""
+    while num>=1:
+        n = num%baseB
+        if n>= 0 and n<=9:
+            n = chr(n + ord('0')) 
+        else:
+            n = chr(n - 10 + ord('A')) 
+        strr = strr + str(n)
+        num = num//baseB
+    strr = ''.join(reversed(strr))    
+    return strr
+
+def bit_add(num1,num2):
+    carry="0"
+    summ=""
+    for i in range(len(num1)-1,-1,-1):
+        if num1[i]=='0' and num2[i]=='0':
+            if carry=='1':
+                summ='1'+summ
+                carry='0'
+            else:
+                summ='0'+summ
+        elif num1[i]=='1' and num2[i]=='1':
+            if carry=='1':
+                summ='1'+summ
+            else:
+                summ='0'+summ
+                carry='1'
+        elif ((num1[i]=='1' and num2[i]=='0') or (num1[i]=='0' and num2[i]=='1')):
+            if carry=='1':
+                summ='0'+summ
+            else:
+                summ='1'+summ
+
+    if carry=='1':
+        summ='1'+summ
+    print("Bitwise Addition of",num1,"and",num2,"is",summ)
+    return
+
+num1 = int(input("Enter first number : "))
+num2 = int(input("Enter second number : "))
+bnum1 = fromdectobin(num1,10,2)
+bnum2 = fromdectobin(num2,10,2)
+bnum1,bnum2 = calclen(bnum1,bnum2)
+print("The binary of",num1,"is",bnum1)
+print("The binary of",num2,"is",bnum2)
+bit_add(bnum1,bnum2)