org.netlib.lapack
Class Slanhs

java.lang.Object
  extended by org.netlib.lapack.Slanhs

public class Slanhs
extends java.lang.Object

Following is the description from the original
Fortran source.  For each array argument, the Java
version will include an integer offset parameter, so
the arguments may not match the description exactly.
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 matrix norm. * * 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 (LWORK), * where LWORK >= N when NORM = 'I'; otherwise, WORK is not * referenced. * * ===================================================================== * * .. Parameters ..


Constructor Summary
Slanhs()
           
 
Method Summary
static float slanhs(java.lang.String norm, int n, float[] a, int _a_offset, int lda, float[] work, int _work_offset)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Slanhs

public Slanhs()
Method Detail

slanhs

public static float slanhs(java.lang.String norm,
                           int n,
                           float[] a,
                           int _a_offset,
                           int lda,
                           float[] work,
                           int _work_offset)