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Class org.netlib.lapack.Dlavsp

java.lang.Object
   |
   +----org.netlib.lapack.Dlavsp

public class Dlavsp

extends 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
 *  =======
 *
 *  DLAVSP  performs one of the matrix-vector operations
 *     x := A*x  or  x := A'*x,
 *  where x is an N element vector and  A is one of the factors
 *  from the block U*D*U' or L*D*L' factorization computed by DSPTRF.
 *
 *  If TRANS = 'N', multiplies by U  or U * D  (or L  or L * D)
 *  If TRANS = 'T', multiplies by U' or D * U' (or L' or D * L' )
 *  If TRANS = 'C', multiplies by U' or D * U' (or L' or D * L' )
 *
 *  Arguments
 *  ==========
 *
 *  UPLO    (input) CHARACTER*1
 *          Specifies whether the factor stored in A is upper or lower
 *          triangular.
 *          = 'U':  Upper triangular
 *          = 'L':  Lower triangular
 *
 *  TRANS   (input) CHARACTER*1
 *          Specifies the operation to be performed:
 *          = 'N':  x := A*x
 *          = 'T':  x := A'*x
 *          = 'C':  x := A'*x
 *
 *  DIAG    (input) CHARACTER*1
 *          Specifies whether or not the diagonal blocks are unit
 *          matrices.  If the diagonal blocks are assumed to be unit,
 *          then A = U or A = L, otherwise A = U*D or A = L*D.
 *          = 'U':  Diagonal blocks are assumed to be unit matrices.
 *          = 'N':  Diagonal blocks are assumed to be non-unit matrices.
 *
 *  N       (input) INTEGER
 *          The number of rows and columns of the matrix A.  N >= 0.
 *
 *  NRHS    (input) INTEGER
 *          The number of right hand sides, i.e., the number of vectors
 *          x to be multiplied by A.  NRHS >= 0.
 *
 *  A       (input) DOUBLE PRECISION array, dimension (N*(N+1)/2)
 *          The block diagonal matrix D and the multipliers used to
 *          obtain the factor U or L, stored as a packed triangular
 *          matrix as computed by DSPTRF.
 *
 *  IPIV    (input) INTEGER array, dimension (N)
 *          The pivot indices from DSPTRF.
 *
 *  B       (input/output) DOUBLE PRECISION array, dimension (LDB,NRHS)
 *          On entry, B contains NRHS vectors of length N.
 *          On exit, B is overwritten with the product A * B.
 *
 *  LDB     (input) INTEGER
 *          The leading dimension of the array B.  LDB >= max(1,N).
 *
 *  INFO    (output) INTEGER
 *          = 0: successful exit
 *          < 0: if INFO = -k, the k-th argument had an illegal value
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Dlavsp()

dlavsp(String, String, String, int, int, double[], int, int[], int, double[], int, int, intW)

 public Dlavsp()

 public static void dlavsp(String uplo,
                           String trans,
                           String diag,
                           int n,
                           int nrhs,
                           double a[],
                           int _a_offset,
                           int ipiv[],
                           int _ipiv_offset,
                           double b[],
                           int _b_offset,
                           int ldb,
                           intW info)

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