PLASMA  2.8.0
PLASMA - Parallel Linear Algebra for Scalable Multi-core Architectures
double PLASMA_dlansy ( PLASMA_enum  norm,
PLASMA_enum  uplo,
int  N,
double *  A,
int  LDA 
)

PLASMA_dlansy returns the value

dlansy = ( max(abs(A(i,j))), NORM = PlasmaMaxNorm ( ( norm1(A), NORM = PlasmaOneNorm ( ( normI(A), NORM = PlasmaInfNorm ( ( normF(A), NORM = PlasmaFrobeniusNorm

where norm1 denotes the one norm of a matrix (maximum column sum), normI denotes the infinity norm of a matrix (maximum row sum) and normF denotes the Frobenius norm of a matrix (square root of sum of squares). Note that max(abs(A(i,j))) is not a consistent matrix norm.

Parameters
[in]norm= PlasmaMaxNorm: Max norm = PlasmaOneNorm: One norm = PlasmaInfNorm: Infinity norm = PlasmaFrobeniusNorm: Frobenius norm
[in]uplo= PlasmaUpper: Upper triangle of A is stored; = PlasmaLower: Lower triangle of A is stored.
[in]NThe number of columns/rows of the matrix A. N >= 0. When N = 0, the returned value is set to zero.
[in]AThe N-by-N matrix A.
[in]LDAThe leading dimension of the array A. LDA >= max(1,N).
Returns
Return values
thenorm described above.
See also
PLASMA_dlansy_Tile
PLASMA_dlansy_Tile_Async
PLASMA_clansy
PLASMA_dlansy
PLASMA_slansy