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User's confirmation of the system order

**[Specification]**
**[Arguments]**
**[Method]**
**[References]**
**[Comments]**
**[Example]**
**Purpose**

To ask for user's confirmation of the system order found by
SLICOT Library routine IB01OD. This routine may be modified,
but its interface must be preserved.

**Specification**
SUBROUTINE IB01OY( NS, NMAX, N, SV, INFO )
C .. Scalar Arguments ..
INTEGER INFO, N, NMAX, NS
C .. Array Arguments ..
DOUBLE PRECISION SV( * )

**Arguments**
**Input/Output Parameters**

NS (input) INTEGER
The number of singular values. NS > 0.
NMAX (input) INTEGER
The maximum value of the system order. 0 <= NMAX <= NS.
N (input/output) INTEGER
On entry, the estimate of the system order computed by
IB01OD routine. 0 <= N <= NS.
On exit, the user's estimate of the system order, which
could be identical with the input value of N.
Note that the output value of N should be less than
or equal to NMAX.
SV (input) DOUBLE PRECISION array, dimension ( NS )
The singular values, in descending order, used for
determining the system order.

**Error Indicator**
INFO INTEGER
= 0: successful exit;
< 0: if INFO = -i, the i-th argument had an illegal
value.

**Further Comments**
None

**Example**
**Program Text**

None

**Program Data**
None

**Program Results**
None

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