--- rpl/lapack/lapack/zgetc2.f	2014/01/27 09:24:36	1.13
+++ rpl/lapack/lapack/zgetc2.f	2023/08/07 08:39:20	1.21
@@ -2,24 +2,24 @@
 *
 *  =========== 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 ZGETC2 + dependencies 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zgetc2.f"> 
-*> [TGZ]</a> 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zgetc2.f"> 
-*> [ZIP]</a> 
-*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zgetc2.f"> 
+*> Download ZGETC2 + dependencies
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zgetc2.f">
+*> [TGZ]</a>
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zgetc2.f">
+*> [ZIP]</a>
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zgetc2.f">
 *> [TXT]</a>
-*> \endhtmlonly 
+*> \endhtmlonly
 *
 *  Definition:
 *  ===========
 *
 *       SUBROUTINE ZGETC2( N, A, LDA, IPIV, JPIV, INFO )
-* 
+*
 *       .. Scalar Arguments ..
 *       INTEGER            INFO, LDA, N
 *       ..
@@ -27,7 +27,7 @@
 *       INTEGER            IPIV( * ), JPIV( * )
 *       COMPLEX*16         A( LDA, * )
 *       ..
-*  
+*
 *
 *> \par Purpose:
 *  =============
@@ -93,12 +93,10 @@
 *  Authors:
 *  ========
 *
-*> \author Univ. of Tennessee 
-*> \author Univ. of California Berkeley 
-*> \author Univ. of Colorado Denver 
-*> \author NAG Ltd. 
-*
-*> \date November 2013
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
 *
 *> \ingroup complex16GEauxiliary
 *
@@ -111,10 +109,9 @@
 *  =====================================================================
       SUBROUTINE ZGETC2( N, A, LDA, IPIV, JPIV, INFO )
 *
-*  -- LAPACK auxiliary routine (version 3.5.0) --
+*  -- LAPACK auxiliary routine --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-*     November 2013
 *
 *     .. Scalar Arguments ..
       INTEGER            INFO, LDA, N
@@ -135,7 +132,7 @@
       DOUBLE PRECISION   BIGNUM, EPS, SMIN, SMLNUM, XMAX
 *     ..
 *     .. External Subroutines ..
-      EXTERNAL           ZGERU, ZSWAP
+      EXTERNAL           ZGERU, ZSWAP, DLABAD
 *     ..
 *     .. External Functions ..
       DOUBLE PRECISION   DLAMCH
@@ -146,14 +143,32 @@
 *     ..
 *     .. Executable Statements ..
 *
+      INFO = 0
+*
+*     Quick return if possible
+*
+      IF( N.EQ.0 )
+     $   RETURN
+*
 *     Set constants to control overflow
 *
-      INFO = 0
       EPS = DLAMCH( 'P' )
       SMLNUM = DLAMCH( 'S' ) / EPS
       BIGNUM = ONE / SMLNUM
       CALL DLABAD( SMLNUM, BIGNUM )
 *
+*     Handle the case N=1 by itself
+*
+      IF( N.EQ.1 ) THEN
+         IPIV( 1 ) = 1
+         JPIV( 1 ) = 1
+         IF( ABS( A( 1, 1 ) ).LT.SMLNUM ) THEN
+            INFO = 1
+            A( 1, 1 ) = DCMPLX( SMLNUM, ZERO )
+         END IF
+         RETURN
+      END IF
+*
 *     Factorize A using complete pivoting.
 *     Set pivots less than SMIN to SMIN
 *