--- rpl/lapack/blas/dzasum.f	2010/08/13 21:03:40	1.5
+++ rpl/lapack/blas/dzasum.f	2016/08/27 15:37:53	1.13
@@ -1,28 +1,74 @@
+*> \brief \b DZASUM
+*
+*  =========== DOCUMENTATION ===========
+*
+* Online html documentation available at 
+*            http://www.netlib.org/lapack/explore-html/ 
+*
+*  Definition:
+*  ===========
+*
+*       DOUBLE PRECISION FUNCTION DZASUM(N,ZX,INCX)
+* 
+*       .. Scalar Arguments ..
+*       INTEGER INCX,N
+*       ..
+*       .. Array Arguments ..
+*       COMPLEX*16 ZX(*)
+*       ..
+*  
+*
+*> \par Purpose:
+*  =============
+*>
+*> \verbatim
+*>
+*>    DZASUM takes the sum of the (|Re(.)| + |Im(.)|)'s of a complex vector and
+*>    returns a single precision result.
+*> \endverbatim
+*
+*  Authors:
+*  ========
+*
+*> \author Univ. of Tennessee 
+*> \author Univ. of California Berkeley 
+*> \author Univ. of Colorado Denver 
+*> \author NAG Ltd. 
+*
+*> \date November 2015
+*
+*> \ingroup double_blas_level1
+*
+*> \par Further Details:
+*  =====================
+*>
+*> \verbatim
+*>
+*>     jack dongarra, 3/11/78.
+*>     modified 3/93 to return if incx .le. 0.
+*>     modified 12/3/93, array(1) declarations changed to array(*)
+*> \endverbatim
+*>
+*  =====================================================================
       DOUBLE PRECISION FUNCTION DZASUM(N,ZX,INCX)
+*
+*  -- Reference BLAS level1 routine (version 3.6.0) --
+*  -- Reference BLAS is a software package provided by Univ. of Tennessee,    --
+*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+*     November 2015
+*
 *     .. Scalar Arguments ..
       INTEGER INCX,N
 *     ..
 *     .. Array Arguments ..
-      DOUBLE COMPLEX ZX(*)
+      COMPLEX*16 ZX(*)
 *     ..
 *
-*  Purpose
-*  =======
-*
-*     DZASUM takes the sum of the absolute values.
-*
-*  Further Details
-*  ===============
-*
-*     jack dongarra, 3/11/78.
-*     modified 3/93 to return if incx .le. 0.
-*     modified 12/3/93, array(1) declarations changed to array(*)
-*
 *  =====================================================================
 *
 *     .. Local Scalars ..
       DOUBLE PRECISION STEMP
-      INTEGER I,IX
+      INTEGER I,NINCX
 *     ..
 *     .. External Functions ..
       DOUBLE PRECISION DCABS1
@@ -31,23 +77,22 @@
       DZASUM = 0.0d0
       STEMP = 0.0d0
       IF (N.LE.0 .OR. INCX.LE.0) RETURN
-      IF (INCX.EQ.1) GO TO 20
+      IF (INCX.EQ.1) THEN
 *
-*        code for increment not equal to 1
+*        code for increment equal to 1
 *
-      IX = 1
-      DO 10 I = 1,N
-          STEMP = STEMP + DCABS1(ZX(IX))
-          IX = IX + INCX
-   10 CONTINUE
-      DZASUM = STEMP
-      RETURN
+         DO I = 1,N
+            STEMP = STEMP + DCABS1(ZX(I))
+         END DO
+      ELSE
 *
-*        code for increment equal to 1
+*        code for increment not equal to 1
 *
-   20 DO 30 I = 1,N
-          STEMP = STEMP + DCABS1(ZX(I))
-   30 CONTINUE
+         NINCX = N*INCX
+         DO I = 1,NINCX,INCX
+            STEMP = STEMP + DCABS1(ZX(I))
+         END DO
+      END IF
       DZASUM = STEMP
       RETURN
       END