152 lines
3.6 KiB
Fortran
152 lines
3.6 KiB
Fortran
*> \brief \b SERRPS
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*
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* =========== DOCUMENTATION ===========
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*
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* Online html documentation available at
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* http://www.netlib.org/lapack/explore-html/
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*
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* Definition:
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* ===========
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*
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* SUBROUTINE SERRPS( PATH, NUNIT )
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*
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* .. Scalar Arguments ..
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* INTEGER NUNIT
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* CHARACTER*3 PATH
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* ..
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*
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*
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*> \par Purpose:
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* =============
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*>
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*> \verbatim
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*>
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*> SERRPS tests the error exits for the REAL routines
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*> for SPSTRF..
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*> \endverbatim
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*
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* Arguments:
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* ==========
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*
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*> \param[in] PATH
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*> \verbatim
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*> PATH is CHARACTER*3
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*> The LAPACK path name for the routines to be tested.
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*> \endverbatim
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*>
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*> \param[in] NUNIT
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*> \verbatim
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*> NUNIT is INTEGER
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*> The unit number for output.
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*> \endverbatim
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*
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* Authors:
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* ========
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*
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*> \author Univ. of Tennessee
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*> \author Univ. of California Berkeley
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*> \author Univ. of Colorado Denver
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*> \author NAG Ltd.
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*
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*> \ingroup single_lin
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*
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* =====================================================================
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SUBROUTINE SERRPS( PATH, NUNIT )
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*
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* -- LAPACK test routine --
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* -- LAPACK is a software package provided by Univ. of Tennessee, --
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* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
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*
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* .. Scalar Arguments ..
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INTEGER NUNIT
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CHARACTER*3 PATH
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* ..
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*
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* =====================================================================
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*
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* .. Parameters ..
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INTEGER NMAX
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PARAMETER ( NMAX = 4 )
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* ..
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* .. Local Scalars ..
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INTEGER I, INFO, J, RANK
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* ..
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* .. Local Arrays ..
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REAL A( NMAX, NMAX ), WORK( 2*NMAX )
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INTEGER PIV( NMAX )
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* ..
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* .. External Subroutines ..
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EXTERNAL ALAESM, CHKXER, SPSTF2, SPSTRF
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* ..
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* .. Scalars in Common ..
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INTEGER INFOT, NOUT
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LOGICAL LERR, OK
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CHARACTER*32 SRNAMT
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* ..
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* .. Common blocks ..
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COMMON / INFOC / INFOT, NOUT, OK, LERR
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COMMON / SRNAMC / SRNAMT
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* ..
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* .. Intrinsic Functions ..
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INTRINSIC REAL
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* ..
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* .. Executable Statements ..
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*
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NOUT = NUNIT
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WRITE( NOUT, FMT = * )
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*
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* Set the variables to innocuous values.
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*
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DO 110 J = 1, NMAX
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DO 100 I = 1, NMAX
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A( I, J ) = 1.0 / REAL( I+J )
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*
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100 CONTINUE
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PIV( J ) = J
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WORK( J ) = 0.
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WORK( NMAX+J ) = 0.
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*
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110 CONTINUE
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OK = .TRUE.
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*
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*
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* Test error exits of the routines that use the Cholesky
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* decomposition of a symmetric positive semidefinite matrix.
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*
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* SPSTRF
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*
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SRNAMT = 'SPSTRF'
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INFOT = 1
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CALL SPSTRF( '/', 0, A, 1, PIV, RANK, -1.0, WORK, INFO )
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CALL CHKXER( 'SPSTRF', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL SPSTRF( 'U', -1, A, 1, PIV, RANK, -1.0, WORK, INFO )
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CALL CHKXER( 'SPSTRF', INFOT, NOUT, LERR, OK )
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INFOT = 4
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CALL SPSTRF( 'U', 2, A, 1, PIV, RANK, -1.0, WORK, INFO )
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CALL CHKXER( 'SPSTRF', INFOT, NOUT, LERR, OK )
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*
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* SPSTF2
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*
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SRNAMT = 'SPSTF2'
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INFOT = 1
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CALL SPSTF2( '/', 0, A, 1, PIV, RANK, -1.0, WORK, INFO )
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CALL CHKXER( 'SPSTF2', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL SPSTF2( 'U', -1, A, 1, PIV, RANK, -1.0, WORK, INFO )
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CALL CHKXER( 'SPSTF2', INFOT, NOUT, LERR, OK )
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INFOT = 4
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CALL SPSTF2( 'U', 2, A, 1, PIV, RANK, -1.0, WORK, INFO )
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CALL CHKXER( 'SPSTF2', INFOT, NOUT, LERR, OK )
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*
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*
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* Print a summary line.
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*
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CALL ALAESM( PATH, OK, NOUT )
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*
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RETURN
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*
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* End of SERRPS
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*
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END
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