From 4f838e927308531320d6f393b42bbceafc611f5d Mon Sep 17 00:00:00 2001
From: andraspap <andraspap@gmail.com>
Date: Tue, 15 Apr 2014 22:03:56 -0400
Subject: [PATCH] Assignment done.

---
 cachematrix.R | 52 +++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 46 insertions(+), 6 deletions(-)

diff --git a/cachematrix.R b/cachematrix.R
index a50be65aa44..4b9abc3d132 100644
--- a/cachematrix.R
+++ b/cachematrix.R
@@ -1,15 +1,55 @@
 ## Put comments here that give an overall description of what your
 ## functions do
 
-## Write a short comment describing this function
-
+## Create a special matrix that can store its inverse as well
+## to avoid possible repeats of long computations
 makeCacheMatrix <- function(x = matrix()) {
-
+	# Initialize the inverse to NULL
+	invX <- NULL
+	
+	# Setter function for the matrix x
+	set <- function(y) {
+		# Set the matrix (in the parent i.e. makeCacheMatrix environment)
+		x <<- y
+		# Reset the inverse to NULL (out of sync from x)
+		invX <<- NULL
+	}
+	
+	# Getter for the matrix itself
+	get <- function() x 
+	
+	# Setter for the inverse
+	setinv <- function(inv) invX <<- inv  #in the parent i.e. makeCacheMatrix environment
+	
+	# Getter for the inverse
+	getinv <- function() invX  
+	
+	# List the function withint this function
+	list(set = set, get = get,
+	     setinv = setinv,
+	     getinv = getinv)  
 }
 
 
-## Write a short comment describing this function
-
+## Return the inverse of a special matrix if type makeCacheMatrix
 cacheSolve <- function(x, ...) {
-        ## Return a matrix that is the inverse of 'x'
+	## Return a matrix that is the inverse of 'x'
+	inv <- x$getinv()
+	
+	
+	if(!is.null(inv)) {
+		message("getting cached data")
+		return(inv)
+	}
+	
+	# Not chaced so calculate the inverse
+	# Get the data
+	data <- x$get()
+	# Solve
+	inv <- solve(data)
+	# Set the inverse on the special matrix
+	x$setinv(inv)
+	
+	# Return the inverse
+	inv  
 }