subroutine derrqp	(	character*3	PATH,
		integer	NUNIT
	)

DERRQP

Purpose:

 DERRQP tests the error exits for DGEQP3.

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 2015

Definition at line 56 of file derrqp.f.

*
*  -- LAPACK test routine (version 3.6.0) --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*     November 2015
*
*     .. Scalar Arguments ..
      CHARACTER*3        path
      INTEGER            nunit
*     ..
*
*  =====================================================================
*
*     .. Parameters ..
      INTEGER            nmax
      parameter                ( nmax = 3 )
*     ..
*     .. Local Scalars ..
      CHARACTER*2        c2
      INTEGER            info, lw
*     ..
*     .. Local Arrays ..
      INTEGER            ip( nmax )
      DOUBLE PRECISION   a( nmax, nmax ), tau( nmax ), w( 3*nmax+1 )
*     ..
*     .. External Functions ..
      LOGICAL            lsamen
      EXTERNAL           lsamen
*     ..
*     .. External Subroutines ..
      EXTERNAL           alaesm, chkxer, dgeqp3
*     ..
*     .. Scalars in Common ..
      LOGICAL            lerr, ok
      CHARACTER*32       srnamt
      INTEGER            infot, nout
*     ..
*     .. Common blocks ..
      COMMON             / infoc / infot, nout, ok, lerr
      COMMON             / srnamc / srnamt
*     ..
*     .. Executable Statements ..
*
      nout = nunit
      WRITE( nout, fmt = * )
      c2 = path( 2: 3 )
      lw = 3*nmax + 1
      a( 1, 1 ) = 1.0d+0
      a( 1, 2 ) = 2.0d+0
      a( 2, 2 ) = 3.0d+0
      a( 2, 1 ) = 4.0d+0
      ok = .true.
*
      IF( lsamen( 2, c2, 'QP' ) ) THEN
*
*        Test error exits for QR factorization with pivoting
*
*        DGEQP3
*
         srnamt = 'DGEQP3'
         infot = 1
         CALL dgeqp3( -1, 0, a, 1, ip, tau, w, lw, info )
         CALL chkxer( 'DGEQP3', infot, nout, lerr, ok )
         infot = 2
         CALL dgeqp3( 1, -1, a, 1, ip, tau, w, lw, info )
         CALL chkxer( 'DGEQP3', infot, nout, lerr, ok )
         infot = 4
         CALL dgeqp3( 2, 3, a, 1, ip, tau, w, lw, info )
         CALL chkxer( 'DGEQP3', infot, nout, lerr, ok )
         infot = 8
         CALL dgeqp3( 2, 2, a, 2, ip, tau, w, lw-10, info )
         CALL chkxer( 'DGEQP3', infot, nout, lerr, ok )
      END IF
*
*     Print a summary line.
*
      CALL alaesm( path, ok, nout )
*
      RETURN
*
*     End of DERRQP
*

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