org.netlib.lapack
Class Spptri

java.lang.Object
  org.netlib.lapack.Spptri

public class Spptri
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
 *  =======
 *
 *  SPPTRI computes the inverse of a real symmetric positive definite
 *  matrix A using the Cholesky factorization A = U**T*U or A = L*L**T
 *  computed by SPPTRF.
 *
 *  Arguments
 *  =========
 *
 *  UPLO    (input) CHARACTER*1
 *          = 'U':  Upper triangular factor is stored in AP;
 *          = 'L':  Lower triangular factor is stored in AP.
 *
 *  N       (input) INTEGER
 *          The order of the matrix A.  N >= 0.
 *
 *  AP      (input/output) REAL array, dimension (N*(N+1)/2)
 *          On entry, the triangular factor U or L from the Cholesky
 *          factorization A = U**T*U or A = L*L**T, packed columnwise as

 *          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.
 *
 *          On exit, the upper or lower triangle of the (symmetric)
 *          inverse of A, overwriting the input factor U or L.
 *
 *  INFO    (output) INTEGER
 *          = 0:  successful exit
 *          < 0:  if INFO = -i, the i-th argument had an illegal value
 *          > 0:  if INFO = i, the (i,i) element of the factor U or L is

 *                zero, and the inverse could not be computed.
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Constructor Summary

Spptri()

Method Summary

static void

spptri(java.lang.String uplo, int n, float[] ap, int _ap_offset, intW info)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Spptri

public Spptri()

Method Detail

spptri

public static void spptri(java.lang.String uplo,
                          int n,
                          float[] ap,
                          int _ap_offset,
                          intW info)