addition reading exponent out of double numbers

src/addition.c

@@ -111,11 +111,22 @@ float addition_float(float number1, float number2) {
     return num3.number.floating;
 }
 
+// reading sign out of an integer (double number)
+
 unsigned long long sign_double(unsigned long long a) {
     if (a & 0x8000000000000000) return 1;
     else return 0;
 }
 
+// reading precision out of an integer (double number)
+
 unsigned long long precision_double(unsigned long long a) {
     return a & 0x000fffffffffffff;
+}
+
+// reading exponent out of an integer (double number)
+
+unsigned long long exponent_double(unsigned long long number) {
+    unsigned long long exponent = 0x7ff0000000000000;
+    return (number & exponent) >> 52;
 }

src/addition.h

@@ -27,4 +27,6 @@ unsigned long long sign_double(unsigned long long a);
 
 unsigned long long precision_double(unsigned long long a);
 
+unsigned long long exponent_double(unsigned long long number);
+
 #endif // ADDITION_H