| IER |
Meaning |
| 0 |
No error detected |
| -1 |
Nonpositive matrix size N |
| -2 |
Insufficient real workspace |
| -3 |
Insufficient integer workspace |
| -4 |
Nonpositive diagonal element |
| -5 |
Nonexistent diagonal element |
| -6 |
A is not positive definite |
| -7 |
Q is not positive definite |
| -8 |
Cannot permute matrix as requested |
| -9 |
MDIM is not large enough to allow expansion
of matrix |
| -10 |
Inadmissible parameter encountered |
| -11 |
Incorrect storage mode for block method |
| -12 |
Zero pivot encountered in factorization |
| -13 |
Breakdown in direction vector calculation |
| -14 |
Breakdown in attempt to perform rotation |
| -15 |
Breakdown in iterate calculation |
| -16 |
Unimplemented combination of parameters |
| -18 |
Unable to perform eigenvalue estimation |
| 1 |
Failure to converge in ITMAX iterations |
| 2 |
ZETA too small - reset to 500*SRELPR |
| 3 |
ZBRENT failed to converge in MAXFN iterations
(signifies difficulty in eigenvalue
estimation) |
| 4 |
In ZBRENT, f(a) and f(b) have the same sign
(signifies difficulty in eigenvalue
estimation) |
| 5 |
Negative pivot encountered in factorization |
