Overview | Package | Class | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## org.netlib.lapack
Class Slantb

    java.lang.Object
      org.netlib.lapack.Slantb

    public class Slantb

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
     *  =======
     *
     *  SLANTB  returns the value of the one norm,  or the Frobenius norm, or
     *  the  infinity norm,  or the element of  largest absolute value  of an
     *  n by n triangular band matrix A,  with ( k + 1 ) diagonals.
     *
     *  Description
     *  ===========
     *
     *  SLANTB returns the value
     *
     *     SLANTB = ( 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 SLANTB as described
     *          above.
     *
     *  UPLO    (input) CHARACTER*1
     *          Specifies whether the matrix A is upper or lower triangular.

     *          = 'U':  Upper triangular
     *          = 'L':  Lower triangular
     *
     *  DIAG    (input) CHARACTER*1
     *          Specifies whether or not the matrix A is unit triangular.
     *          = 'N':  Non-unit triangular
     *          = 'U':  Unit triangular
     *
     *  N       (input) INTEGER
     *          The order of the matrix A.  N >= 0.  When N = 0, SLANTB is
     *          set to zero.
     *
     *  K       (input) INTEGER
     *          The number of super-diagonals of the matrix A if UPLO = 'U',

     *          or the number of sub-diagonals of the matrix A if UPLO = 'L'.
     *          K >= 0.
     *
     *  AB      (input) REAL array, dimension (LDAB,N)
     *          The upper or lower triangular band matrix A, stored in the
     *          first k+1 rows of AB.  The j-th column of A is stored
     *          in the j-th column of the array AB as follows:
     *          if UPLO = 'U', AB(k+1+i-j,j) = A(i,j) for max(1,j-k)<=i<=j;
     *          if UPLO = 'L', AB(1+i-j,j)   = A(i,j) for j<=i<=min(n,j+k).
     *          Note that when DIAG = 'U', the elements of the array AB
     *          corresponding to the diagonal elements of the matrix A are
     *          not referenced, but are assumed to be one.
     *
     *  LDAB    (input) INTEGER
     *          The leading dimension of the array AB.  LDAB >= K+1.
     *
     *  WORK    (workspace) REAL array, dimension (MAX(1,LWORK)),
     *          where LWORK >= N when NORM = 'I'; otherwise, WORK is not
     *          referenced.
     *
     * =====================================================================

     *
     *     .. Parameters ..

Constructor Summary
`Slantb()`

Method Summary
`static float` | `slantb(java.lang.String norm, java.lang.String uplo, java.lang.String diag, int n, int k, float[] ab, int _ab_offset, int ldab, 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

### Slantb

    public Slantb()

Method Detail

### slantb

    public static float slantb(java.lang.String norm,
                               java.lang.String uplo,
                               java.lang.String diag,
                               int n,
                               int k,
                               float[] ab,
                               int _ab_offset,
                               int ldab,
                               float[] work,
                               int _work_offset)

Overview | Package | Class | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD