COND  COND Condition Number of a Matrix


Usage
 
 Calculates the condition number of a matrix.  To compute the
 2-norm condition number of a matrix (ratio of largest to smallest
 singular values), use the syntax
 
    y = cond(A)
 
 where A is a matrix.  If you want to compute the condition number
 in a different norm (e.g., the 1-norm), use the second syntax
 
    y = cond(A,p)
 
 where p is the norm to use when computing the condition number.
 The following choices of p are supported
   -  p = 1 returns the 1-norm, or the max column sum of A
   -  p = 2 returns the 2-norm (largest singular value of A)
   -  p = inf returns the infinity norm, or the max row sum of A
   -  p = 'fro' returns the Frobenius-norm (vector Euclidean norm, or RMS value)
 