dposl

NAME

dposl - (obsolete) solve the linear system Ax = b for a symmetric positive definite matrix A, which has been Cholesky-factored by SPOCO or SPOFA, and vectors b and x.

SYNOPSIS

  SUBROUTINE DPOSL( A, LDA, N, B)
  INTEGER LDA, N
  DOUBLE PRECISION A(LDA,*), B(*)
 
  SUBROUTINE DPOSL_64( A, LDA, N, B)
  INTEGER*8 LDA, N
  DOUBLE PRECISION A(LDA,*), B(*)

C INTERFACE

#include <sunperf.h>

void dposl(double *a, int lda, int n, double *b);

void dposl_64(double *a, long lda, long n, double *b);

ARGUMENTS

* A (input): Cholesky factorization of the matrix A, as computed by SPOCO or SPOFA.
* LDA (input): Leading dimension of the array A as specified in a dimension or type statement. LDA >= max(1,N).
* N (input): Order of the matrix A. N >= 0.
* B (input/output): On entry, the right-hand side vector b. On exit, the solution vector x.