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dstedc, sstedc: remove dead ICOMPZ.EQ.0 branch #1302

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dstedc, sstedc: remove dead ICOMPZ.EQ.0 branch #1302

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39 changes: 15 additions & 24 deletions SRC/dstedc.f
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Original file line number Diff line number Diff line change
Expand Up @@ -212,7 +212,6 @@ SUBROUTINE DSTEDC( COMPZ, N, D, E, Z, LDZ, WORK, LWORK, IWORK,
* ..
* .. External Subroutines ..
EXTERNAL DGEMM, DLACPY, DLAED0, DLASCL, DLASET,
$ DLASRT,
$ DSTEQR, DSTERF, DSWAP, XERBLA
* ..
* .. Intrinsic Functions ..
Expand Down Expand Up @@ -437,33 +436,25 @@ SUBROUTINE DSTEDC( COMPZ, N, D, E, Z, LDZ, WORK, LWORK, IWORK,
*
* endwhile
*
IF( ICOMPZ.EQ.0 ) THEN
*
* Use Quick Sort
* Use Selection Sort to minimize swaps of eigenvectors
*
CALL DLASRT( 'I', N, D, INFO )
*
ELSE
*
* Use Selection Sort to minimize swaps of eigenvectors
*
DO 40 II = 2, N
I = II - 1
K = I
P = D( I )
DO 30 J = II, N
IF( D( J ).LT.P ) THEN
K = J
P = D( J )
END IF
DO 40 II = 2, N
I = II - 1
K = I
P = D( I )
DO 30 J = II, N
IF( D( J ).LT.P ) THEN
K = J
P = D( J )
END IF
30 CONTINUE
IF( K.NE.I ) THEN
D( K ) = D( I )
D( I ) = P
CALL DSWAP( N, Z( 1, I ), 1, Z( 1, K ), 1 )
END IF
IF( K.NE.I ) THEN
D( K ) = D( I )
D( I ) = P
CALL DSWAP( N, Z( 1, I ), 1, Z( 1, K ), 1 )
END IF
40 CONTINUE
END IF
END IF
*
50 CONTINUE
Expand Down
39 changes: 15 additions & 24 deletions SRC/sstedc.f
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Original file line number Diff line number Diff line change
Expand Up @@ -213,7 +213,6 @@ SUBROUTINE SSTEDC( COMPZ, N, D, E, Z, LDZ, WORK, LWORK, IWORK,
* ..
* .. External Subroutines ..
EXTERNAL SGEMM, SLACPY, SLAED0, SLASCL, SLASET,
$ SLASRT,
$ SSTEQR, SSTERF, SSWAP, XERBLA
* ..
* .. Intrinsic Functions ..
Expand Down Expand Up @@ -438,33 +437,25 @@ SUBROUTINE SSTEDC( COMPZ, N, D, E, Z, LDZ, WORK, LWORK, IWORK,
*
* endwhile
*
IF( ICOMPZ.EQ.0 ) THEN
*
* Use Quick Sort
* Use Selection Sort to minimize swaps of eigenvectors
*
CALL SLASRT( 'I', N, D, INFO )
*
ELSE
*
* Use Selection Sort to minimize swaps of eigenvectors
*
DO 40 II = 2, N
I = II - 1
K = I
P = D( I )
DO 30 J = II, N
IF( D( J ).LT.P ) THEN
K = J
P = D( J )
END IF
DO 40 II = 2, N
I = II - 1
K = I
P = D( I )
DO 30 J = II, N
IF( D( J ).LT.P ) THEN
K = J
P = D( J )
END IF
30 CONTINUE
IF( K.NE.I ) THEN
D( K ) = D( I )
D( I ) = P
CALL SSWAP( N, Z( 1, I ), 1, Z( 1, K ), 1 )
END IF
IF( K.NE.I ) THEN
D( K ) = D( I )
D( I ) = P
CALL SSWAP( N, Z( 1, I ), 1, Z( 1, K ), 1 )
END IF
40 CONTINUE
END IF
END IF
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*
50 CONTINUE
Expand Down
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