cond
Condition number of a square matrix.
c=cond(a)
Inputs
a Any matrix
Outputs
c The estimated condition number of a .


Description
The output is the ratio of the maximum and minimum singular values of the matrix a .


Example
>>a=[1 2 3 ; 4 5 6; 7 8 9]
>>cond(a)
       2.0187e+016
>>// Since the condition number is large, the nullspace
>>// should not be empty
>>null(a)
       0.4082
      -0.8165
       0.4082

>>// Verify
>>a[1,:]+a[3,:]-2*a[2,:]
          0          0          0