From 49fe1b11ef124c240b5552b57d1b2ddbefcea5a5 Mon Sep 17 00:00:00 2001
From: Krishna Vedala <krishna.vedala@ieee.org>
Date: Wed, 27 May 2020 15:42:23 -0400
Subject: [PATCH] document fibonacci program

---
 math/fibonacci.cpp | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/math/fibonacci.cpp b/math/fibonacci.cpp
index e82875da3..1a5f4afb4 100644
--- a/math/fibonacci.cpp
+++ b/math/fibonacci.cpp
@@ -1,12 +1,17 @@
+/**
+ * @file
+ * @brief Generate fibonacci sequence
+ *
+ * Calculate the the value on Fibonacci's sequence given an
+ * integer as input.
+ * \f[\text{fib}(n) = \text{fib}(n-1) + \text{fib}(n-2)\f]
+ */
 #include <cassert>
 #include <iostream>
 
-/* Calculate the the value on Fibonacci's sequence given an
-integer as input
-Fibonacci =  0, 1, 1, 2, 3, 5,
-             8, 13, 21, 34, 55,
-             89, 144, ...       */
-
+/**
+ * Recursively compute sequences
+ */
 int fibonacci(unsigned int n) {
     /* If the input is 0 or 1 just return the same
        This will set the first 2 values of the sequence */
@@ -16,6 +21,7 @@ int fibonacci(unsigned int n) {
     return fibonacci(n - 1) + fibonacci(n - 2);
 }
 
+/// Main function
 int main() {
     int n;
     std::cin >> n;