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Fix handling of negative increments in ?LARF/?LARF1F/?LARF1L (Reference-LAPACK PR 1315) #5865

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Fix handling of negative increments in ?LARF/?LARF1F/?LARF1L (Reference-LAPACK PR 1315) #5865

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11 changes: 6 additions & 5 deletions lapack-netlib/SRC/clarf.f
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Original file line number Diff line number Diff line change
Expand Up @@ -5,15 +5,13 @@
* Online html documentation available at
* http://www.netlib.org/lapack/explore-html/
*
*> \htmlonly
*> Download CLARF + dependencies
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/clarf.f">
*> [TGZ]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/clarf.f">
*> [ZIP]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/clarf.f">
*> [TXT]</a>
*> \endhtmlonly
*
* Definition:
* ===========
Expand Down Expand Up @@ -121,10 +119,11 @@
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \ingroup complexOTHERauxiliary
*> \ingroup larf
*
* =====================================================================
SUBROUTINE CLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
IMPLICIT NONE
*
* -- LAPACK auxiliary routine --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
Expand Down Expand Up @@ -204,7 +203,8 @@ SUBROUTINE CLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
*
* C(1:lastv,1:lastc) := C(...) - v(1:lastv,1) * w(1:lastc,1)**H
*
CALL CGERC( LASTV, LASTC, -TAU, V, INCV, WORK, 1, C, LDC )
CALL CGERC( LASTV, LASTC, -TAU, V, INCV, WORK, 1, C,
$ LDC )
END IF
ELSE
*
Expand All @@ -219,7 +219,8 @@ SUBROUTINE CLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
*
* C(1:lastc,1:lastv) := C(...) - w(1:lastc,1) * v(1:lastv,1)**H
*
CALL CGERC( LASTC, LASTV, -TAU, WORK, 1, V, INCV, C, LDC )
CALL CGERC( LASTC, LASTV, -TAU, WORK, 1, V, INCV, C,
$ LDC )
END IF
END IF
RETURN
Expand Down
8 changes: 4 additions & 4 deletions lapack-netlib/SRC/dlarf.f
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Original file line number Diff line number Diff line change
Expand Up @@ -5,15 +5,13 @@
* Online html documentation available at
* http://www.netlib.org/lapack/explore-html/
*
*> \htmlonly
*> Download DLARF + dependencies
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlarf.f">
*> [TGZ]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlarf.f">
*> [ZIP]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlarf.f">
*> [TXT]</a>
*> \endhtmlonly
*
* Definition:
* ===========
Expand Down Expand Up @@ -117,10 +115,11 @@
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \ingroup doubleOTHERauxiliary
*> \ingroup larf
*
* =====================================================================
SUBROUTINE DLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
IMPLICIT NONE
*
* -- LAPACK auxiliary routine --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
Expand Down Expand Up @@ -194,7 +193,8 @@ SUBROUTINE DLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
*
* w(1:lastc,1) := C(1:lastv,1:lastc)**T * v(1:lastv,1)
*
CALL DGEMV( 'Transpose', LASTV, LASTC, ONE, C, LDC, V, INCV,
CALL DGEMV( 'Transpose', LASTV, LASTC, ONE, C, LDC, V,
$ INCV,
$ ZERO, WORK, 1 )
*
* C(1:lastv,1:lastc) := C(...) - v(1:lastv,1) * w(1:lastc,1)**T
Expand Down
8 changes: 4 additions & 4 deletions lapack-netlib/SRC/slarf.f
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,15 +5,13 @@
* Online html documentation available at
* http://www.netlib.org/lapack/explore-html/
*
*> \htmlonly
*> Download SLARF + dependencies
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/slarf.f">
*> [TGZ]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/slarf.f">
*> [ZIP]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/slarf.f">
*> [TXT]</a>
*> \endhtmlonly
*
* Definition:
* ===========
Expand Down Expand Up @@ -117,10 +115,11 @@
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \ingroup realOTHERauxiliary
*> \ingroup larf
*
* =====================================================================
SUBROUTINE SLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
IMPLICIT NONE
*
* -- LAPACK auxiliary routine --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
Expand Down Expand Up @@ -194,7 +193,8 @@ SUBROUTINE SLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
*
* w(1:lastc,1) := C(1:lastv,1:lastc)**T * v(1:lastv,1)
*
CALL SGEMV( 'Transpose', LASTV, LASTC, ONE, C, LDC, V, INCV,
CALL SGEMV( 'Transpose', LASTV, LASTC, ONE, C, LDC, V,
$ INCV,
$ ZERO, WORK, 1 )
*
* C(1:lastv,1:lastc) := C(...) - v(1:lastv,1) * w(1:lastc,1)**T
Expand Down
11 changes: 6 additions & 5 deletions lapack-netlib/SRC/zlarf.f
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Original file line number Diff line number Diff line change
Expand Up @@ -5,15 +5,13 @@
* Online html documentation available at
* http://www.netlib.org/lapack/explore-html/
*
*> \htmlonly
*> Download ZLARF + dependencies
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlarf.f">
*> [TGZ]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlarf.f">
*> [ZIP]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlarf.f">
*> [TXT]</a>
*> \endhtmlonly
*
* Definition:
* ===========
Expand Down Expand Up @@ -121,10 +119,11 @@
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \ingroup complex16OTHERauxiliary
*> \ingroup larf
*
* =====================================================================
SUBROUTINE ZLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
IMPLICIT NONE
*
* -- LAPACK auxiliary routine --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
Expand Down Expand Up @@ -204,7 +203,8 @@ SUBROUTINE ZLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
*
* C(1:lastv,1:lastc) := C(...) - v(1:lastv,1) * w(1:lastc,1)**H
*
CALL ZGERC( LASTV, LASTC, -TAU, V, INCV, WORK, 1, C, LDC )
CALL ZGERC( LASTV, LASTC, -TAU, V, INCV, WORK, 1, C,
$ LDC )
END IF
ELSE
*
Expand All @@ -219,7 +219,8 @@ SUBROUTINE ZLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
*
* C(1:lastc,1:lastv) := C(...) - w(1:lastc,1) * v(1:lastv,1)**H
*
CALL ZGERC( LASTC, LASTV, -TAU, WORK, 1, V, INCV, C, LDC )
CALL ZGERC( LASTC, LASTV, -TAU, WORK, 1, V, INCV, C,
$ LDC )
END IF
END IF
RETURN
Expand Down
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