Refs #247. Included lapack source codes. Avoid downloading tar.gz from netlib.org

Based on 3.4.2 version, apply patch.for_lapack-3.4.2.

lapack-netlib/SRC/izmax1.f

@@ -0,0 +1,154 @@
+*> \brief \b IZMAX1 finds the index of the vector element whose real part has maximum absolute value.
+*
+*  =========== DOCUMENTATION ===========
+*
+* Online html documentation available at 
+*            http://www.netlib.org/lapack/explore-html/ 
+*
+*> \htmlonly
+*> Download IZMAX1 + dependencies 
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/izmax1.f"> 
+*> [TGZ]</a> 
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/izmax1.f"> 
+*> [ZIP]</a> 
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/izmax1.f"> 
+*> [TXT]</a>
+*> \endhtmlonly 
+*
+*  Definition:
+*  ===========
+*
+*       INTEGER          FUNCTION IZMAX1( N, CX, INCX )
+* 
+*       .. Scalar Arguments ..
+*       INTEGER            INCX, N
+*       ..
+*       .. Array Arguments ..
+*       COMPLEX*16         CX( * )
+*       ..
+*  
+*
+*> \par Purpose:
+*  =============
+*>
+*> \verbatim
+*>
+*> IZMAX1 finds the index of the element whose real part has maximum
+*> absolute value.
+*>
+*> Based on IZAMAX from Level 1 BLAS.
+*> The change is to use the 'genuine' absolute value.
+*> \endverbatim
+*
+*  Arguments:
+*  ==========
+*
+*> \param[in] N
+*> \verbatim
+*>          N is INTEGER
+*>          The number of elements in the vector CX.
+*> \endverbatim
+*>
+*> \param[in] CX
+*> \verbatim
+*>          CX is COMPLEX*16 array, dimension (N)
+*>          The vector whose elements will be summed.
+*> \endverbatim
+*>
+*> \param[in] INCX
+*> \verbatim
+*>          INCX is INTEGER
+*>          The spacing between successive values of CX.  INCX >= 1.
+*> \endverbatim
+*
+*  Authors:
+*  ========
+*
+*> \author Univ. of Tennessee 
+*> \author Univ. of California Berkeley 
+*> \author Univ. of Colorado Denver 
+*> \author NAG Ltd. 
+*
+*> \date September 2012
+*
+*> \ingroup complex16OTHERauxiliary
+*
+*> \par Contributors:
+*  ==================
+*>
+*> Nick Higham for use with ZLACON.
+*
+*  =====================================================================
+      INTEGER          FUNCTION IZMAX1( N, CX, INCX )
+*
+*  -- LAPACK auxiliary routine (version 3.4.2) --
+*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
+*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+*     September 2012
+*
+*     .. Scalar Arguments ..
+      INTEGER            INCX, N
+*     ..
+*     .. Array Arguments ..
+      COMPLEX*16         CX( * )
+*     ..
+*
+* =====================================================================
+*
+*     .. Local Scalars ..
+      INTEGER            I, IX
+      DOUBLE PRECISION   SMAX
+      COMPLEX*16         ZDUM
+*     ..
+*     .. Intrinsic Functions ..
+      INTRINSIC          ABS
+*     ..
+*     .. Statement Functions ..
+      DOUBLE PRECISION   CABS1
+*     ..
+*     .. Statement Function definitions ..
+*
+*     NEXT LINE IS THE ONLY MODIFICATION.
+      CABS1( ZDUM ) = ABS( ZDUM )
+*     ..
+*     .. Executable Statements ..
+*
+      IZMAX1 = 0
+      IF( N.LT.1 )
+     $   RETURN
+      IZMAX1 = 1
+      IF( N.EQ.1 )
+     $   RETURN
+      IF( INCX.EQ.1 )
+     $   GO TO 30
+*
+*     CODE FOR INCREMENT NOT EQUAL TO 1
+*
+      IX = 1
+      SMAX = CABS1( CX( 1 ) )
+      IX = IX + INCX
+      DO 20 I = 2, N
+         IF( CABS1( CX( IX ) ).LE.SMAX )
+     $      GO TO 10
+         IZMAX1 = I
+         SMAX = CABS1( CX( IX ) )
+   10    CONTINUE
+         IX = IX + INCX
+   20 CONTINUE
+      RETURN
+*
+*     CODE FOR INCREMENT EQUAL TO 1
+*
+   30 CONTINUE
+      SMAX = CABS1( CX( 1 ) )
+      DO 40 I = 2, N
+         IF( CABS1( CX( I ) ).LE.SMAX )
+     $      GO TO 40
+         IZMAX1 = I
+         SMAX = CABS1( CX( I ) )
+   40 CONTINUE
+      RETURN
+*
+*     End of IZMAX1
+*
+      END