org.netlib.lapack
Class Slangt

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

public class Slangt
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 * ======= * * SLANGT returns the value of the one norm, or the Frobenius norm, or * the infinity norm, or the element of largest absolute value of a * real tridiagonal matrix A. * * Description * =========== * * SLANGT returns the value * * SLANGT = ( 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 SLANGT as described * above. * * N (input) INTEGER * The order of the matrix A. N >= 0. When N = 0, SLANGT is * set to zero. * * DL (input) REAL array, dimension (N-1) * The (n-1) sub-diagonal elements of A. * * D (input) REAL array, dimension (N) * The diagonal elements of A. * * DU (input) REAL array, dimension (N-1) * The (n-1) super-diagonal elements of A. * * ===================================================================== * * .. Parameters ..


Constructor Summary
Slangt()
           
 
Method Summary
static float slangt(java.lang.String norm, int n, float[] dl, int _dl_offset, float[] d, int _d_offset, float[] du, int _du_offset)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Slangt

public Slangt()
Method Detail

slangt

public static float slangt(java.lang.String norm,
                           int n,
                           float[] dl,
                           int _dl_offset,
                           float[] d,
                           int _d_offset,
                           float[] du,
                           int _du_offset)