All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class org.netlib.lapack.Dpptrs

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

public class Dpptrs

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
 *  =======
 *
 *  DPPTRS solves a system of linear equations A*X = B with a symmetric
 *  positive definite matrix A in packed storage using the Cholesky
 *  factorization A = U**T*U or A = L*L**T computed by DPPTRF.
 *
 *  Arguments
 *  =========
 *
 *  UPLO    (input) CHARACTER*1
 *          = 'U':  Upper triangle of A is stored;
 *          = 'L':  Lower triangle of A is stored.
 *
 *  N       (input) INTEGER
 *          The order of the matrix A.  N >= 0.
 *
 *  NRHS    (input) INTEGER
 *          The number of right hand sides, i.e., the number of columns
 *          of the matrix B.  NRHS >= 0.
 *
 *  AP      (input) DOUBLE PRECISION array, dimension (N*(N+1)/2)
 *          The triangular factor U or L from the Cholesky factorization
 *          A = U**T*U or A = L*L**T, packed columnwise in a linear
 *          array.  The j-th column of U or L is stored in the array AP
 *          as follows:
 *          if UPLO = 'U', AP(i + (j-1)*j/2) = U(i,j) for 1<=i<=j;
 *          if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = L(i,j) for j<=i<=n.
 *
 *  B       (input/output) DOUBLE PRECISION array, dimension (LDB,NRHS)
 *          On entry, the right hand side matrix B.
 *          On exit, the solution matrix X.
 *
 *  LDB     (input) INTEGER
 *          The leading dimension of the array B.  LDB >= max(1,N).
 *
 *  INFO    (output) INTEGER
 *          = 0:  successful exit
 *          < 0:  if INFO = -i, the i-th argument had an illegal value
 *
 *  =====================================================================
 *
 *     .. Local Scalars ..

Dpptrs()

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

 public Dpptrs()

 public static void dpptrs(String uplo,
                           int n,
                           int nrhs,
                           double ap[],
                           int _ap_offset,
                           double b[],
                           int _b_offset,
                           int ldb,
                           intW info)

All Packages  Class Hierarchy  This Package  Previous  Next  Index