F11XAF Example Program Data
  5                   N
 11                   NNZ
  2.   1    1
  1.   1    2
  1.   2    3
 -1.   2    4
  4.   3    1
  1.   3    3
  1.   3    5
  1.   4    4
  2.   4    5
 -2.   5    2
  3.   5    5         A(I), IROW(I), ICOL(I), I=1,...,NNZ
 0.70 0.16 0.52 
 0.77 0.28            X(I), I=1,...,N