Finish LogicalNeg and Update Makefile

LAB1/Makefile

@@ -23,4 +23,11 @@ btestexplicit:
 clean:
 	rm -f *.o btest fshow ishow *~
 
+oneshoot:
+	make clean;	\
+	./dlc bits.c;	\
+	make btest;	\
+	./btest bits.c;	\
+	make clean	\
+
 

LAB1/bits.c

@@ -281,7 +281,7 @@ int isLessOrEqual(int x, int y) {
  *   Rating: 4 
  */
 int logicalNeg(int x) {
-  return 2;
+  return ((x|(~x+1))>>31)+1;
 }
 /* howManyBits - return the minimum number of bits required to represent x in
  *             two's complement

README.md

@@ -19,3 +19,7 @@ A CSAPP LAB
 4. Finish isAsciiDigit
 
 5. Finish isLessOrEqual
+
+6. Finish logicalNeg
+
+7. Update Makefile