Book 3 review, Chapters 1-3, responding to feedback

Author: trevordblack

books/RayTracingTheRestOfYourLife.html

@@ -38,6 +38,6 @@ int main() {
     }
 
     std::cout << std::fixed << std::setprecision(12);
-    std::cout << "PI/2 = " << pi/2 << '\n';
-    std::cout << "Estimate = " << sum/N << '\n';
+    std::cout << "PI/2 = " << pi / 2.0 << '\n';
+    std::cout << "Estimate = " << sum / N << '\n';
 }

src/TheRestOfYourLife/cos_cubed.cc

@@ -34,6 +34,6 @@ int main() {
     }
 
     std::cout << std::fixed << std::setprecision(12);
-    std::cout << "PI/2 = " << pi/2 << '\n';
-    std::cout << "Estimate = " << sum/N << '\n';
+    std::cout << "PI/2 = " << pi / 2.0 << '\n';
+    std::cout << "Estimate = " << sum / N << '\n';
 }

src/TheRestOfYourLife/cos_density.cc

@@ -34,9 +34,9 @@ int main() {
     std::vector<sample> samples;
     for (int i = 0; i < N; i++) {
         // Get the area under the curve
-        auto x = random_double(0,2 * pi);
+        auto x = random_double(0, 2*pi);
         auto sin_x = sin(x);
-        auto p_x = exp(-x/ (2 * pi)) * sin_x * sin_x;
+        auto p_x = exp(-x / (2*pi)) * sin_x * sin_x;
         sum += p_x;
         // store this sample
         sample this_sample = {x, p_x};

src/TheRestOfYourLife/estimate_halfway.cc

@@ -17,7 +17,7 @@
 #include <stdlib.h>
 
 double f(double d) {
-    return 8.0 * pow(random_double(), 1./3.);
+    return 8.0 * pow(d, 1.0/3.0);
 }
 
 double pdf(double x) {
@@ -34,5 +34,5 @@ int main() {
     }
 
     std::cout << std::fixed << std::setprecision(12);
-    std::cout << "I = " << sum/N << '\n';
+    std::cout << "I = " << sum / N << '\n';
 }

src/TheRestOfYourLife/integrate_x_sq.cc

@@ -35,5 +35,5 @@ int main() {
         sum += f_d / pdf(d);
     }
     std::cout << std::fixed << std::setprecision(12);
-    std::cout << "I = " << sum/N << '\n';
+    std::cout << "I = " << sum / N << '\n';
 }