title: How to find the inverse of a Rectangular Matrix in C using GSL
body: <p>I searched on Google and I couldn't find a function to calculate the inverse of Rectangular Matrix using GSL. Being that it was hard to find, an answer here would help others when they need to find an inverse of a rectangular matrix.
  If it is not possible using GSL, then please suggest some alternative library which is easy to use and provides the inverse of rectangular matrix.</p>