Fixed Newton-Raphson header file.

modsim/ass2/newton_raphson.h

@@ -2,7 +2,7 @@
 
 #define MAX_STEPS 1000
 
-double newton_raphson(func_ptr f, func_ptr df, double x_start, int *steps) {
+double newton_raphson(func_ptr f, func_ptr df, double x_start, unsigned int *steps) {
     double x = x_start, last_x = x - 1;
 
     for( *steps = 0; x != last_x; (*steps)++ ) {

modsim/ass2/q3.c

@@ -6,15 +6,22 @@
 
 #define EPSILON 1e-11
 
-double quad(double x) {
+double f(double x) {
     return x * x - 2;
 }
 
+double df(double x) {
+    return 2 * x;
+}
+
 int main(void) {
     unsigned int steps;
 
     printf("Square root of 2 using bisection method: %.11f (%d steps)\n",
-           bisec(&quad, 1.4, 1.5, EPSILON, &steps), steps);
+           bisec(&f, 1.4, 1.5, EPSILON, &steps), steps);
+
+    printf("Square root of 2 using newton_raphson method: %.11f (%d steps)\n",
+           newton_raphson(&f, &df, 1.4, &steps), steps);
 
     return 0;
 }

modsim/ass2/q4.c

@@ -35,7 +35,7 @@ double df3(double x) {
 }
 
 int main(void) {
-    int steps;
+    unsigned int steps;
     double root;
 
     if( !isnan(root = newton_raphson(&f2, &df2, 1000000, &steps)) )