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SUBROUTINE SERRPS( PATH, NUNIT )
*
* -- LAPACK test routine (version 3.1) --
* Craig Lucas, University of Manchester / NAG Ltd.
* October, 2008
*
* .. Scalar Arguments ..
INTEGER NUNIT
CHARACTER*3 PATH
* ..
*
* Purpose
* =======
*
* SERRPS tests the error exits for the REAL routines
* for SPSTRF..
*
* Arguments
* =========
*
* PATH (input) CHARACTER*3
* The LAPACK path name for the routines to be tested.
*
* NUNIT (input) INTEGER
* The unit number for output.
*
* =====================================================================
*
* .. Parameters ..
INTEGER NMAX
PARAMETER ( NMAX = 4 )
* ..
* .. Local Scalars ..
INTEGER I, INFO, J
* ..
* .. Local Arrays ..
REAL A( NMAX, NMAX ), WORK( 2*NMAX )
INTEGER PIV( NMAX )
* ..
* .. External Subroutines ..
EXTERNAL ALAESM, CHKXER, SPSTF2, SPSTRF
* ..
* .. 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 REAL
* ..
* .. 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 ) = 1.0 / REAL( I+J )
*
100 CONTINUE
PIV( J ) = J
WORK( J ) = 0.
WORK( NMAX+J ) = 0.
*
110 CONTINUE
OK = .TRUE.
*
*
* Test error exits of the routines that use the Cholesky
* decomposition of a symmetric positive semidefinite matrix.
*
* SPSTRF
*
SRNAMT = 'SPSTRF'
INFOT = 1
CALL SPSTRF( '/', 0, A, 1, PIV, 1, -1.0, WORK, INFO )
CALL CHKXER( 'SPSTRF', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SPSTRF( 'U', -1, A, 1, PIV, 1, -1.0, WORK, INFO )
CALL CHKXER( 'SPSTRF', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL SPSTRF( 'U', 2, A, 1, PIV, 1, -1.0, WORK, INFO )
CALL CHKXER( 'SPSTRF', INFOT, NOUT, LERR, OK )
*
* SPSTF2
*
SRNAMT = 'SPSTF2'
INFOT = 1
CALL SPSTF2( '/', 0, A, 1, PIV, 1, -1.0, WORK, INFO )
CALL CHKXER( 'SPSTF2', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SPSTF2( 'U', -1, A, 1, PIV, 1, -1.0, WORK, INFO )
CALL CHKXER( 'SPSTF2', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL SPSTF2( 'U', 2, A, 1, PIV, 1, -1.0, WORK, INFO )
CALL CHKXER( 'SPSTF2', INFOT, NOUT, LERR, OK )
*
*
* Print a summary line.
*
CALL ALAESM( PATH, OK, NOUT )
*
RETURN
*
* End of SERRPS
*
END
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