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version 1.13, 2018/05/29 07:17:59
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version 1.14, 2023/08/07 08:38:58
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| *> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
| *> \author NAG Ltd. |
*> \author NAG Ltd. |
| * |
* |
| *> \date December 2016 |
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| * |
|
| *> \ingroup OTHERauxiliary |
*> \ingroup OTHERauxiliary |
| * |
* |
| * ===================================================================== |
* ===================================================================== |
| SUBROUTINE DLARTGP( F, G, CS, SN, R ) |
SUBROUTINE DLARTGP( F, G, CS, SN, R ) |
| * |
* |
| * -- LAPACK auxiliary routine (version 3.7.0) -- |
* -- LAPACK auxiliary routine -- |
| * -- LAPACK is a software package provided by Univ. of Tennessee, -- |
* -- LAPACK 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..-- |
| * December 2016 |
|
| * |
* |
| * .. Scalar Arguments .. |
* .. Scalar Arguments .. |
| DOUBLE PRECISION CS, F, G, R, SN |
DOUBLE PRECISION CS, F, G, R, SN |
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| F1 = F1*SAFMN2 |
F1 = F1*SAFMN2 |
| G1 = G1*SAFMN2 |
G1 = G1*SAFMN2 |
| SCALE = MAX( ABS( F1 ), ABS( G1 ) ) |
SCALE = MAX( ABS( F1 ), ABS( G1 ) ) |
| IF( SCALE.GE.SAFMX2 ) |
IF( SCALE.GE.SAFMX2 .AND. COUNT .LT. 20 ) |
| $ GO TO 10 |
$ GO TO 10 |
| R = SQRT( F1**2+G1**2 ) |
R = SQRT( F1**2+G1**2 ) |
| CS = F1 / R |
CS = F1 / R |
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