naginterfaces.library.blas.zspmv¶
- naginterfaces.library.blas.zspmv(uplo, alpha, ap, x, beta, y)[source]¶
zspmv
performs the matrix-vector operationwhere is an complex symmetric matrix stored in packed form, and are -element complex vectors, and and are complex scalars.
For full information please refer to the NAG Library document for f06tc
https://support.nag.com/numeric/nl/nagdoc_30.2/flhtml/f06/f06tcf.html
- Parameters
- uplostr, length 1
Specifies whether the upper or lower triangular part of is stored.
The upper triangular part of is stored.
The lower triangular part of is stored.
- alphacomplex
The scalar .
- apcomplex, array-like, shape
The symmetric matrix , packed by columns.
- xcomplex, array-like, shape
The -element vector .
- betacomplex
The scalar .
- ycomplex, array-like, shape
The -element vector .
- Returns
- ycomplex, ndarray, shape
The updated vector .
- Raises
- NagValueError
- (errno )
On entry, error in parameter .
Constraint: or .
- (errno )
On entry, error in parameter .
Constraint: .
- (errno )
On entry, error in parameter .
Constraint: .
- (errno )
On entry, error in parameter .
Constraint: .
- Notes
No equivalent traditional C interface for this routine exists in the NAG Library.