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Add non-trivial terminating case to ?LARFT (Reference-LAPACK PR 1163) #5871

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Add non-trivial terminating case to ?LARFT (Reference-LAPACK PR 1163) #5871

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fd89e78
Add non-trivial terminating case for LARFT (Reference-LAPACK PR 1163)
martin-frbg Jun 27, 2026
fa597c2
Add the ?LARFT_LVL2 functions from Reference-LAPACK PR 1163
martin-frbg Jun 27, 2026
9cc2702
Add the LARFT_LVL2 functions from Reference-LAPACK PR 1163
martin-frbg Jun 27, 2026
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8 changes: 4 additions & 4 deletions cmake/lapack.cmake
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -70,7 +70,7 @@ set(SLASRC
slaqgb.f slaqge.f slaqp2.f slaqps.f slaqp2rk.f slaqp3rk.f slaqsb.f slaqsp.f slaqsy.f
slaqr0.f slaqr1.f slaqr2.f slaqr3.f slaqr4.f slaqr5.f
slaqtr.f slar1v.f slar2v.f ilaslr.f ilaslc.f
slarf.f slarfb.f slarfb_gett.f slarfg.f slarfgp.f slarft.f slarfx.f slarfy.f slargv.f
slarf.f slarfb.f slarfb_gett.f slarfg.f slarfgp.f slarft.f slarft_lvl2.f slarfx.f slarfy.f slargv.f
slarf1f.f slarf1l.f slarrv.f slartv.f
slarz.f slarzb.f slarzt.f slasy2.f
slasyf.f slasyf_rook.f slasyf_rk.f slasyf_aa.f
Expand Down Expand Up @@ -177,7 +177,7 @@ set(CLASRC
claqr0.f claqr1.f claqr2.f claqr3.f claqr4.f claqr5.f
claqz0.f claqz1.f claqz2.f claqz3.f
claqsp.f claqsy.f clar1v.f clar2v.f ilaclr.f ilaclc.f
clarf.f clarfb.f clarfb_gett.f clarfg.f clarfgp.f clarft.f
clarf.f clarfb.f clarfb_gett.f clarfg.f clarfgp.f clarft.f clarft_lvl2.f
clarf1f.f clarf1l.f
clarfx.f clarfy.f clargv.f clarnv.f clarrv.f clartg.f90 clartv.f
clarz.f clarzb.f clarzt.f clascl.f claset.f clasr.f classq.f90
Expand Down Expand Up @@ -262,7 +262,7 @@ set(DLASRC
dlaqgb.f dlaqge.f dlaqp2.f dlaqp2rk.f dlaqp3rk.f dlaqps.f dlaqsb.f dlaqsp.f dlaqsy.f
dlaqr0.f dlaqr1.f dlaqr2.f dlaqr3.f dlaqr4.f dlaqr5.f
dlaqtr.f dlar1v.f dlar2v.f iladlr.f iladlc.f
dlarf.f dlarfb.f dlarfb_gett.f dlarfg.f dlarfgp.f dlarft.f dlarfx.f dlarfy.f
dlarf.f dlarfb.f dlarfb_gett.f dlarfg.f dlarfgp.f dlarft.f dlarft_lvl2.f dlarfx.f dlarfy.f
dlarf1f.f dlarf1l.f dlargv.f dlarrv.f dlartv.f
dlarz.f dlarzb.f dlarzt.f dlasy2.f
dlasyf.f dlasyf_rook.f dlasyf_rk.f dlasyf_aa.f
Expand Down Expand Up @@ -372,7 +372,7 @@ set(ZLASRC
zlaqr0.f zlaqr1.f zlaqr2.f zlaqr3.f zlaqr4.f zlaqr5.f
zlaqsp.f zlaqsy.f zlar1v.f zlar2v.f ilazlr.f ilazlc.f
zlarcm.f zlarf.f zlarfb.f zlarfb_gett.f
zlarfg.f zlarfgp.f zlarft.f zlarf1f.f zlarf1l.f
zlarfg.f zlarfgp.f zlarft.f zlarft_lvl2.f zlarf1f.f zlarf1l.f
zlarfx.f zlarfy.f zlargv.f zlarnv.f zlarrv.f zlartg.f90 zlartv.f
zlarz.f zlarzb.f zlarzt.f zlascl.f zlaset.f zlasr.f
zlassq.f90 zlasyf.f zlasyf_rook.f zlasyf_rk.f zlasyf_aa.f
Expand Down
8 changes: 4 additions & 4 deletions lapack-netlib/SRC/Makefile
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -154,7 +154,7 @@ SLASRC_O = \
slaqgb.o slaqge.o slaqp2.o slaqp2rk.o slaqp3rk.o slaqps.o slaqsb.o slaqsp.o slaqsy.o \
slaqr0.o slaqr1.o slaqr2.o slaqr3.o slaqr4.o slaqr5.o \
slaqtr.o slar1v.o slar2v.o ilaslr.o ilaslc.o \
slarf.o slarfb.o slarfb_gett.o slarfg.o slarfgp.o slarft.o slarfx.o slarfy.o slargv.o \
slarf.o slarfb.o slarfb_gett.o slarfg.o slarfgp.o slarft.o slarft_lvl2.o slarfx.o slarfy.o slargv.o \
slarf1f.o slarf1l.o slarrv.o slartv.o \
slarz.o slarzb.o slarzt.o slaswp.o slasy2.o slasyf.o slasyf_rook.o \
slasyf_rk.o \
Expand Down Expand Up @@ -270,7 +270,7 @@ CLASRC_O = \
claqr0.o claqr1.o claqr2.o claqr3.o claqr4.o claqr5.o \
claqsp.o claqsy.o clar1v.o clar2v.o ilaclr.o ilaclc.o \
claqz0.o claqz1.o claqz2.o claqz3.o \
clarf.o clarfb.o clarfb_gett.o clarfg.o clarft.o clarfgp.o \
clarf.o clarfb.o clarfb_gett.o clarfg.o clarft.o clarft_lvl2.o clarfgp.o \
clarf1f.o clarf1l.o \
clarfx.o clarfy.o clargv.o clarnv.o clarrv.o clartg.o clartv.o \
clarz.o clarzb.o clarzt.o clascl.o claset.o clasr.o classq.o \
Expand Down Expand Up @@ -364,7 +364,7 @@ DLASRC_O = \
dlaqgb.o dlaqge.o dlaqp2.o dlaqp2rk.o dlaqp3rk.o dlaqps.o dlaqsb.o dlaqsp.o dlaqsy.o \
dlaqr0.o dlaqr1.o dlaqr2.o dlaqr3.o dlaqr4.o dlaqr5.o \
dlaqtr.o dlar1v.o dlar2v.o iladlr.o iladlc.o \
dlarf.o dlarfb.o dlarfb_gett.o dlarfg.o dlarfgp.o dlarft.o dlarfx.o dlarfy.o \
dlarf.o dlarfb.o dlarfb_gett.o dlarfg.o dlarfgp.o dlarft.o dlarft_lvl2.o dlarfx.o dlarfy.o \
dlarf1f.o dlarf1l.o dlargv.o dlarrv.o dlartv.o \
dlarz.o dlarzb.o dlarzt.o dlaswp.o dlasy2.o \
dlasyf.o dlasyf_rook.o dlasyf_rk.o \
Expand Down Expand Up @@ -479,7 +479,7 @@ ZLASRC_O = \
zlaqsp.o zlaqsy.o zlar1v.o zlar2v.o ilazlr.o ilazlc.o \
zlaqz0.o zlaqz1.o zlaqz2.o zlaqz3.o \
zlarcm.o zlarf.o zlarfb.o zlarfb_gett.o \
zlarfg.o zlarft.o zlarfgp.o zlarf1f.o zlarf1l.o \
zlarfg.o zlarft.o zlarft_lvl2.o zlarfgp.o zlarf1f.o zlarf1l.o \
zlarfx.o zlarfy.o zlargv.o zlarnv.o zlarrv.o zlartg.o zlartv.o \
zlarz.o zlarzb.o zlarzt.o zlascl.o zlaset.o zlasr.o \
zlassq.o zlaswp.o zlasyf.o zlasyf_rook.o zlasyf_rk.o zlasyf_aa.o \
Expand Down
19 changes: 14 additions & 5 deletions lapack-netlib/SRC/clarft.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 CLARFT + dependencies
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/clarft.f">
*> [TGZ]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/clarft.f">
*> [ZIP]</a>
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/clarft.f">
*> [TXT]</a>
*> \endhtmlonly
*
* Definition:
* ===========
Expand Down Expand Up @@ -161,6 +159,7 @@
* =====================================================================
RECURSIVE SUBROUTINE CLARFT( DIRECT, STOREV, N, K, V, LDV,
$ TAU, T, LDT )
IMPLICIT NONE
*
* -- LAPACK auxiliary routine --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
Expand All @@ -179,11 +178,12 @@ RECURSIVE SUBROUTINE CLARFT( DIRECT, STOREV, N, K, V, LDV,
* .. Parameters ..
*
COMPLEX ONE, NEG_ONE, ZERO
PARAMETER(ONE=1.0E+0, ZERO = 0.0E+0, NEG_ONE=-1.0E+0)
PARAMETER(ONE=(1.0E+0,0.0E+0), ZERO = (0.0E+0,0.0E+0),
$ NEG_ONE=(-1.0E+0,0.0E+0))
*
* .. Local Scalars ..
*
INTEGER I,J,L
INTEGER I,J,L,NX
LOGICAL QR,LQ,QL,DIRF,COLV
*
* .. External Subroutines ..
Expand All @@ -193,7 +193,8 @@ RECURSIVE SUBROUTINE CLARFT( DIRECT, STOREV, N, K, V, LDV,
* .. External Functions..
*
LOGICAL LSAME
EXTERNAL LSAME
INTEGER ILAENV
EXTERNAL LSAME, ILAENV
*
* .. Intrinsic Functions..
*
Expand All @@ -219,6 +220,14 @@ RECURSIVE SUBROUTINE CLARFT( DIRECT, STOREV, N, K, V, LDV,
RETURN
END IF
*
* Determine when to cross over into the level 2 based implementation
*
NX = ILAENV(3, "CLARFT", DIRECT // STOREV, N, K, -1, -1)
IF(K.LT.NX) THEN
CALL CLARFT_LVL2(DIRECT, STOREV, N, K, V, LDV, TAU, T, LDT)
RETURN
END IF
*
* Beginning of executable statements
*
L = K / 2
Expand Down
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