org.netlib.lapack
Class SLANHS
java.lang.Object
org.netlib.lapack.SLANHS
public class SLANHS
- extends java.lang.Object
SLANHS is a simplified interface to the JLAPACK routine slanhs.
This interface converts Java-style 2D row-major arrays into
the 1D column-major linearized arrays expected by the lower
level JLAPACK routines. Using this interface also allows you
to omit offset and leading dimension arguments. However, because
of these conversions, these routines will be slower than the low
level ones. Following is the description from the original Fortran
source. Contact seymour@cs.utk.edu with any questions.
* ..
*
* Purpose
* =======
*
* SLANHS returns the value of the one norm, or the Frobenius norm, or
* the infinity norm, or the element of largest absolute value of a
* Hessenberg matrix A.
*
* Description
* ===========
*
* SLANHS returns the value
*
* SLANHS = ( max(abs(A(i,j))), NORM = 'M' or 'm'
* (
* ( norm1(A), NORM = '1', 'O' or 'o'
* (
* ( normI(A), NORM = 'I' or 'i'
* (
* ( normF(A), NORM = 'F', 'f', 'E' or 'e'
*
* 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 no
*
* Arguments
* =========
*
* NORM (input) CHARACTER*1
* Specifies the value to be returned in SLANHS as described
* above.
*
* N (input) INTEGER
* The order of the matrix A. N >= 0. When N = 0, SLANHS is
* set to zero.
*
* A (input) REAL array, dimension (LDA,N)
* The n by n upper Hessenberg matrix A; the part of A below the
* first sub-diagonal is not referenced.
*
* LDA (input) INTEGER
* The leading dimension of the array A. LDA >= max(N,1).
*
* WORK (workspace) REAL array, dimension (MAX(1,LWORK)),
* where LWORK >= N when NORM = 'I'; otherwise, WORK is not
* referenced.
*
* =====================================================================
*
* .. Parameters ..
Method Summary |
static float |
SLANHS(java.lang.String norm,
int n,
float[][] a,
float[] work)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SLANHS
public SLANHS()
SLANHS
public static float SLANHS(java.lang.String norm,
int n,
float[][] a,
float[] work)