subroutine derrps	(	character*3	PATH,
		integer	NUNIT
	)

DERRPS

Purpose:

 DERRPS tests the error exits for the DOUBLE PRECISION routines
 for DPSTRF.

Parameters

[in]	PATH	PATH is CHARACTER*3 The LAPACK path name for the routines to be tested.
[in]	NUNIT	NUNIT is INTEGER The unit number for output.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date

November 2011

Definition at line 57 of file derrps.f.

*
*  -- LAPACK test routine (version 3.4.0) --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*     November 2011
*
*     .. Scalar Arguments ..
      INTEGER            nunit
      CHARACTER*3        path
*     ..
*
*  =====================================================================
*
*     .. Parameters ..
      INTEGER            nmax
      parameter                ( nmax = 4 )
*     ..
*     .. Local Scalars ..
      INTEGER            i, info, j, rank
*     ..
*     .. Local Arrays ..
      DOUBLE PRECISION   a( nmax, nmax ), work( 2*nmax )
      INTEGER            piv( nmax )
*     ..
*     .. External Subroutines ..
      EXTERNAL           alaesm, chkxer, dpstf2, dpstrf
*     ..
*     .. Scalars in Common ..
      INTEGER            infot, nout
      LOGICAL            lerr, ok
      CHARACTER*32       srnamt
*     ..
*     .. Common blocks ..
      COMMON             / infoc / infot, nout, ok, lerr
      COMMON             / srnamc / srnamt
*     ..
*     .. Intrinsic Functions ..
      INTRINSIC          dble
*     ..
*     .. Executable Statements ..
*
      nout = nunit
      WRITE( nout, fmt = * )
*
*     Set the variables to innocuous values.
*
      DO 110 j = 1, nmax
         DO 100 i = 1, nmax
            a( i, j ) = 1.d0 / dble( i+j )
*
  100    CONTINUE
         piv( j ) = j
         work( j ) = 0.d0
         work( nmax+j ) = 0.d0
*
  110 CONTINUE
      ok = .true.
*
*
*        Test error exits of the routines that use the Cholesky
*        decomposition of a symmetric positive semidefinite matrix.
*
*        DPSTRF
*
      srnamt = 'DPSTRF'
      infot = 1
      CALL dpstrf( '/', 0, a, 1, piv, rank, -1.d0, work, info )
      CALL chkxer( 'DPSTRF', infot, nout, lerr, ok )
      infot = 2
      CALL dpstrf( 'U', -1, a, 1, piv, rank, -1.d0, work, info )
      CALL chkxer( 'DPSTRF', infot, nout, lerr, ok )
      infot = 4
      CALL dpstrf( 'U', 2, a, 1, piv, rank, -1.d0, work, info )
      CALL chkxer( 'DPSTRF', infot, nout, lerr, ok )
*
*        DPSTF2
*
      srnamt = 'DPSTF2'
      infot = 1
      CALL dpstf2( '/', 0, a, 1, piv, rank, -1.d0, work, info )
      CALL chkxer( 'DPSTF2', infot, nout, lerr, ok )
      infot = 2
      CALL dpstf2( 'U', -1, a, 1, piv, rank, -1.d0, work, info )
      CALL chkxer( 'DPSTF2', infot, nout, lerr, ok )
      infot = 4
      CALL dpstf2( 'U', 2, a, 1, piv, rank, -1.d0, work, info )
      CALL chkxer( 'DPSTF2', infot, nout, lerr, ok )
*
*
*     Print a summary line.
*
      CALL alaesm( path, ok, nout )
*
      RETURN
*
*     End of DERRPS
*

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