dppsl


NAME

dppsl - (obsolete) solve the linear system Ax = b for a symmetric positive definite matrix A in packed storage, which has been Cholesky-factored by SPPCO or SPPFA, and vectors b and x.


SYNOPSIS

  SUBROUTINE DPPSL( A, N, B)
  INTEGER N
  DOUBLE PRECISION A(*), B(*)
 
  SUBROUTINE DPPSL_64( A, N, B)
  INTEGER*8 N
  DOUBLE PRECISION A(*), B(*)
 

C INTERFACE

#include <sunperf.h>

void dppsl(double *a, int n, double *b);

void dppsl_64(double *a, long n, double *b);


ARGUMENTS

* A (input)
Cholesky factorization of the matrix A, as computed by SPPCO or SPPFA.

* 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.