--- rpl/lapack/blas/dasum.f	2010/12/21 13:51:24	1.6
+++ rpl/lapack/blas/dasum.f	2017/06/17 10:53:42	1.13
@@ -1,4 +1,61 @@
+*> \brief \b DASUM
+*
+*  =========== DOCUMENTATION ===========
+*
+* Online html documentation available at
+*            http://www.netlib.org/lapack/explore-html/
+*
+*  Definition:
+*  ===========
+*
+*       DOUBLE PRECISION FUNCTION DASUM(N,DX,INCX)
+*
+*       .. Scalar Arguments ..
+*       INTEGER INCX,N
+*       ..
+*       .. Array Arguments ..
+*       DOUBLE PRECISION DX(*)
+*       ..
+*
+*
+*> \par Purpose:
+*  =============
+*>
+*> \verbatim
+*>
+*>    DASUM takes the sum of the absolute values.
+*> \endverbatim
+*
+*  Authors:
+*  ========
+*
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
+*
+*> \date December 2016
+*
+*> \ingroup double_blas_level1
+*
+*> \par Further Details:
+*  =====================
+*>
+*> \verbatim
+*>
+*>     jack dongarra, linpack, 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 DASUM(N,DX,INCX)
+*
+*  -- Reference BLAS level1 routine (version 3.7.0) --
+*  -- Reference BLAS is a software package provided by Univ. of Tennessee,    --
+*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+*     December 2016
+*
 *     .. Scalar Arguments ..
       INTEGER INCX,N
 *     ..
@@ -6,18 +63,6 @@
       DOUBLE PRECISION DX(*)
 *     ..
 *
-*  Purpose
-*  =======
-*
-*     DASUM takes the sum of the absolute values.
-*
-*  Further Details
-*  ===============
-*
-*     jack dongarra, linpack, 3/11/78.
-*     modified 3/93 to return if incx .le. 0.
-*     modified 12/3/93, array(1) declarations changed to array(*)
-*
 *  =====================================================================
 *
 *     .. Local Scalars ..
@@ -30,33 +75,37 @@
       DASUM = 0.0d0
       DTEMP = 0.0d0
       IF (N.LE.0 .OR. INCX.LE.0) RETURN
-      IF (INCX.EQ.1) GO TO 20
-*
-*        code for increment not equal to 1
-*
-      NINCX = N*INCX
-      DO 10 I = 1,NINCX,INCX
-          DTEMP = DTEMP + DABS(DX(I))
-   10 CONTINUE
-      DASUM = DTEMP
-      RETURN
-*
+      IF (INCX.EQ.1) THEN
 *        code for increment equal to 1
 *
 *
 *        clean-up loop
 *
-   20 M = MOD(N,6)
-      IF (M.EQ.0) GO TO 40
-      DO 30 I = 1,M
-          DTEMP = DTEMP + DABS(DX(I))
-   30 CONTINUE
-      IF (N.LT.6) GO TO 60
-   40 MP1 = M + 1
-      DO 50 I = MP1,N,6
-          DTEMP = DTEMP + DABS(DX(I)) + DABS(DX(I+1)) + DABS(DX(I+2)) +
-     +            DABS(DX(I+3)) + DABS(DX(I+4)) + DABS(DX(I+5))
-   50 CONTINUE
-   60 DASUM = DTEMP
+         M = MOD(N,6)
+         IF (M.NE.0) THEN
+            DO I = 1,M
+               DTEMP = DTEMP + DABS(DX(I))
+            END DO
+            IF (N.LT.6) THEN
+               DASUM = DTEMP
+               RETURN
+            END IF
+         END IF
+         MP1 = M + 1
+         DO I = MP1,N,6
+            DTEMP = DTEMP + DABS(DX(I)) + DABS(DX(I+1)) +
+     $              DABS(DX(I+2)) + DABS(DX(I+3)) +
+     $              DABS(DX(I+4)) + DABS(DX(I+5))
+         END DO
+      ELSE
+*
+*        code for increment not equal to 1
+*
+         NINCX = N*INCX
+         DO I = 1,NINCX,INCX
+            DTEMP = DTEMP + DABS(DX(I))
+         END DO
+      END IF
+      DASUM = DTEMP
       RETURN
       END