cpodi

NAME

cpodi - (obsolete) compute the determinant and inverse of a symmetric positive definite matrix A, which has been Cholesky-factored by CPOCO, CPOFA, or CQRDC.

SYNOPSIS 

  SUBROUTINE CPODI( A, LDA, N, DET, JOB)
  COMPLEX A(LDA,*)
  INTEGER LDA, N, JOB
  REAL DET(*)
 
  SUBROUTINE CPODI_64( A, LDA, N, DET, JOB)
  COMPLEX A(LDA,*)
  INTEGER*8 LDA, N, JOB
  REAL DET(*)

C INTERFACE

#include <sunperf.h>

void cpodi(complex *a, int lda, int n, float *det, int job);

void cpodi_64(complex *a, long lda, long n, float *det, long job);

ARGUMENTS

* A (input/output)
On entry, the Cholesky factorization of the matrix A, as computed by CPOCO, CPOFA, or CQRDC. On exit, the inverse of the original matrix A if the inverse was requested, otherwise A is unchanged. The strict lower triangle of A is not referenced.

* 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 original matrix A. N >= 0.

* DET (output)
On exit, the determinant of the matrix A. The determinant is stored as b * (10 ** expon) where b is stored in DET(1) and expon is stored in DET(2). 1.0 <= |DET(1)| <= 10.0 or DET(1) = 0.0.

* JOB (input)
Determines which operation the subroutine will perform: