--- rpl/lapack/lapack/dtrexc.f 2011/11/21 20:43:06 1.8
+++ rpl/lapack/lapack/dtrexc.f 2018/05/29 07:18:11 1.16
@@ -2,25 +2,25 @@
*
* =========== 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 DTREXC + dependencies
-*>
-*> [TGZ]
-*>
-*> [ZIP]
-*>
+*> Download DTREXC + dependencies
+*>
+*> [TGZ]
+*>
+*> [ZIP]
+*>
*> [TXT]
-*> \endhtmlonly
+*> \endhtmlonly
*
* Definition:
* ===========
*
* SUBROUTINE DTREXC( COMPQ, N, T, LDT, Q, LDQ, IFST, ILST, WORK,
* INFO )
-*
+*
* .. Scalar Arguments ..
* CHARACTER COMPQ
* INTEGER IFST, ILST, INFO, LDQ, LDT, N
@@ -28,7 +28,7 @@
* .. Array Arguments ..
* DOUBLE PRECISION Q( LDQ, * ), T( LDT, * ), WORK( * )
* ..
-*
+*
*
*> \par Purpose:
* =============
@@ -63,6 +63,7 @@
*> \verbatim
*> N is INTEGER
*> The order of the matrix T. N >= 0.
+*> If N == 0 arguments ILST and IFST may be any value.
*> \endverbatim
*>
*> \param[in,out] T
@@ -92,7 +93,8 @@
*> \param[in] LDQ
*> \verbatim
*> LDQ is INTEGER
-*> The leading dimension of the array Q. LDQ >= max(1,N).
+*> The leading dimension of the array Q. LDQ >= 1, and if
+*> COMPQ = 'V', LDQ >= max(1,N).
*> \endverbatim
*>
*> \param[in,out] IFST
@@ -133,12 +135,12 @@
* 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 doubleOTHERcomputational
*
@@ -146,10 +148,10 @@
SUBROUTINE DTREXC( COMPQ, N, T, LDT, Q, LDQ, IFST, ILST, WORK,
$ INFO )
*
-* -- LAPACK computational routine (version 3.4.0) --
+* -- LAPACK computational 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 ..
CHARACTER COMPQ
@@ -193,9 +195,9 @@
INFO = -4
ELSE IF( LDQ.LT.1 .OR. ( WANTQ .AND. LDQ.LT.MAX( 1, N ) ) ) THEN
INFO = -6
- ELSE IF( IFST.LT.1 .OR. IFST.GT.N ) THEN
+ ELSE IF(( IFST.LT.1 .OR. IFST.GT.N ).AND.( N.GT.0 )) THEN
INFO = -7
- ELSE IF( ILST.LT.1 .OR. ILST.GT.N ) THEN
+ ELSE IF(( ILST.LT.1 .OR. ILST.GT.N ).AND.( N.GT.0 )) THEN
INFO = -8
END IF
IF( INFO.NE.0 ) THEN