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version 1.14, 2017/06/17 10:53:43
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* |
* |
* =========== DOCUMENTATION =========== |
* =========== DOCUMENTATION =========== |
* |
* |
* Online html documentation available at |
* Online html documentation available at |
* http://www.netlib.org/lapack/explore-html/ |
* http://www.netlib.org/lapack/explore-html/ |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE DROTMG(DD1,DD2,DX1,DY1,DPARAM) |
* SUBROUTINE DROTMG(DD1,DD2,DX1,DY1,DPARAM) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* DOUBLE PRECISION DD1,DD2,DX1,DY1 |
* DOUBLE PRECISION DD1,DD2,DX1,DY1 |
* .. |
* .. |
* .. Array Arguments .. |
* .. Array Arguments .. |
* DOUBLE PRECISION DPARAM(5) |
* DOUBLE PRECISION DPARAM(5) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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* Authors: |
* Authors: |
* ======== |
* ======== |
* |
* |
*> \author Univ. of Tennessee |
*> \author Univ. of Tennessee |
*> \author Univ. of California Berkeley |
*> \author Univ. of California Berkeley |
*> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
*> \author NAG Ltd. |
*> \author NAG Ltd. |
* |
* |
*> \date November 2011 |
*> \date December 2016 |
* |
* |
*> \ingroup double_blas_level1 |
*> \ingroup double_blas_level1 |
* |
* |
* ===================================================================== |
* ===================================================================== |
SUBROUTINE DROTMG(DD1,DD2,DX1,DY1,DPARAM) |
SUBROUTINE DROTMG(DD1,DD2,DX1,DY1,DPARAM) |
* |
* |
* -- Reference BLAS level1 routine (version 3.4.0) -- |
* -- Reference BLAS level1 routine (version 3.7.0) -- |
* -- Reference BLAS is a software package provided by Univ. of Tennessee, -- |
* -- Reference BLAS is a software package provided by Univ. of Tennessee, -- |
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- |
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- |
* November 2011 |
* December 2016 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
DOUBLE PRECISION DD1,DD2,DX1,DY1 |
DOUBLE PRECISION DD1,DD2,DX1,DY1 |
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DFLAG = -TWO |
DFLAG = -TWO |
DPARAM(1) = DFLAG |
DPARAM(1) = DFLAG |
RETURN |
RETURN |
END IF |
END IF |
* REGULAR-CASE.. |
* REGULAR-CASE.. |
DP1 = DD1*DX1 |
DP1 = DD1*DX1 |
DQ2 = DP2*DY1 |
DQ2 = DP2*DY1 |
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END IF |
END IF |
ENDDO |
ENDDO |
END IF |
END IF |
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IF (DD2.NE.ZERO) THEN |
IF (DD2.NE.ZERO) THEN |
DO WHILE ( (DABS(DD2).LE.RGAMSQ) .OR. (DABS(DD2).GE.GAMSQ) ) |
DO WHILE ( (DABS(DD2).LE.RGAMSQ) .OR. (DABS(DD2).GE.GAMSQ) ) |
IF (DFLAG.EQ.ZERO) THEN |
IF (DFLAG.EQ.ZERO) THEN |
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DD2 = DD2/GAM**2 |
DD2 = DD2/GAM**2 |
DH21 = DH21*GAM |
DH21 = DH21*GAM |
DH22 = DH22*GAM |
DH22 = DH22*GAM |
END IF |
END IF |
END DO |
END DO |
END IF |
END IF |
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END IF |
END IF |
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IF (DFLAG.LT.ZERO) THEN |
IF (DFLAG.LT.ZERO) THEN |
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DPARAM(5) = DH22 |
DPARAM(5) = DH22 |
ELSE IF (DFLAG.EQ.ZERO) THEN |
ELSE IF (DFLAG.EQ.ZERO) THEN |
DPARAM(3) = DH21 |
DPARAM(3) = DH21 |
DPARAM(4) = DH12 |
DPARAM(4) = DH12 |
ELSE |
ELSE |
DPARAM(2) = DH11 |
DPARAM(2) = DH11 |
DPARAM(5) = DH22 |
DPARAM(5) = DH22 |
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DPARAM(1) = DFLAG |
DPARAM(1) = DFLAG |
RETURN |
RETURN |
END |
END |
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