Mutual Recursion in Octave

I was very pleased to find that Octave supports mutual recursion! This
is meant as merely a test of Octave's features, not as a supposed
efficient means of actually determining whether an integer quantity is
even or odd. Enjoy!

~Tomer


function [ bool ] = even ( num )

  if ( num == 0 )
    
    bool = true;

  else
    
    bool = odd ( num - 1 );

  endif

  endfunction

function [ bool ] = odd ( num )

  if ( num == 0 )
    
    bool = false;

  else
    
    bool = even ( num - 1 );

  endif

  endfunction

octave> even ( 5 )
ans = 0
octave> even ( 8 )
ans = 1
octave> odd ( 9 )
ans = 1
octave> odd ( 5 )
ans = 1
octave> odd ( 8 )
ans = 0



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