--- rpl/lapack/lapack/zlartg.f	2011/11/21 20:43:17	1.8
+++ rpl/lapack/lapack/zlartg.f	2017/06/17 10:54:22	1.16
@@ -1,30 +1,30 @@
-*> \brief \b ZLARTG
+*> \brief \b ZLARTG generates a plane rotation with real cosine and complex sine.
 *
 *  =========== DOCUMENTATION ===========
 *
-* Online html documentation available at 
-*            http://www.netlib.org/lapack/explore-html/ 
+* Online html documentation available at
+*            http://www.netlib.org/lapack/explore-html/
 *
 *> \htmlonly
-*> Download ZLARTG + dependencies 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlartg.f"> 
-*> [TGZ]</a> 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlartg.f"> 
-*> [ZIP]</a> 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlartg.f"> 
+*> Download ZLARTG + dependencies
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlartg.f">
+*> [TGZ]</a>
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlartg.f">
+*> [ZIP]</a>
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlartg.f">
 *> [TXT]</a>
-*> \endhtmlonly 
+*> \endhtmlonly
 *
 *  Definition:
 *  ===========
 *
 *       SUBROUTINE ZLARTG( F, G, CS, SN, R )
-* 
+*
 *       .. Scalar Arguments ..
 *       DOUBLE PRECISION   CS
 *       COMPLEX*16         F, G, R, SN
 *       ..
-*  
+*
 *
 *> \par Purpose:
 *  =============
@@ -80,12 +80,12 @@
 *  Authors:
 *  ========
 *
-*> \author Univ. of Tennessee 
-*> \author Univ. of California Berkeley 
-*> \author Univ. of Colorado Denver 
-*> \author NAG Ltd. 
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
 *
-*> \date November 2011
+*> \date December 2016
 *
 *> \ingroup complex16OTHERauxiliary
 *
@@ -103,10 +103,10 @@
 *  =====================================================================
       SUBROUTINE ZLARTG( F, G, CS, SN, R )
 *
-*  -- LAPACK auxiliary routine (version 3.4.0) --
+*  -- LAPACK auxiliary routine (version 3.7.0) --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-*     November 2011
+*     December 2016
 *
 *     .. Scalar Arguments ..
       DOUBLE PRECISION   CS
@@ -130,7 +130,8 @@
 *     ..
 *     .. External Functions ..
       DOUBLE PRECISION   DLAMCH, DLAPY2
-      EXTERNAL           DLAMCH, DLAPY2
+      LOGICAL            DISNAN
+      EXTERNAL           DLAMCH, DLAPY2, DISNAN
 *     ..
 *     .. Intrinsic Functions ..
       INTRINSIC          ABS, DBLE, DCMPLX, DCONJG, DIMAG, INT, LOG,
@@ -139,26 +140,17 @@
 *     .. Statement Functions ..
       DOUBLE PRECISION   ABS1, ABSSQ
 *     ..
-*     .. Save statement ..
-*     SAVE               FIRST, SAFMX2, SAFMIN, SAFMN2
-*     ..
-*     .. Data statements ..
-*     DATA               FIRST / .TRUE. /
-*     ..
 *     .. Statement Function definitions ..
       ABS1( FF ) = MAX( ABS( DBLE( FF ) ), ABS( DIMAG( FF ) ) )
       ABSSQ( FF ) = DBLE( FF )**2 + DIMAG( FF )**2
 *     ..
 *     .. Executable Statements ..
 *
-*     IF( FIRST ) THEN
-         SAFMIN = DLAMCH( 'S' )
-         EPS = DLAMCH( 'E' )
-         SAFMN2 = DLAMCH( 'B' )**INT( LOG( SAFMIN / EPS ) /
-     $            LOG( DLAMCH( 'B' ) ) / TWO )
-         SAFMX2 = ONE / SAFMN2
-*        FIRST = .FALSE.
-*     END IF
+      SAFMIN = DLAMCH( 'S' )
+      EPS = DLAMCH( 'E' )
+      SAFMN2 = DLAMCH( 'B' )**INT( LOG( SAFMIN / EPS ) /
+     $         LOG( DLAMCH( 'B' ) ) / TWO )
+      SAFMX2 = ONE / SAFMN2
       SCALE = MAX( ABS1( F ), ABS1( G ) )
       FS = F
       GS = G
@@ -172,7 +164,7 @@
          IF( SCALE.GE.SAFMX2 )
      $      GO TO 10
       ELSE IF( SCALE.LE.SAFMN2 ) THEN
-         IF( G.EQ.CZERO ) THEN
+         IF( G.EQ.CZERO.OR.DISNAN( ABS( G ) ) ) THEN
             CS = ONE
             SN = CZERO
             R = F