--- rpl/lapack/blas/idamax.f	2010/04/21 13:45:10	1.2
+++ rpl/lapack/blas/idamax.f	2012/08/22 09:36:41	1.9
@@ -1,4 +1,61 @@
+*> \brief \b IDAMAX
+*
+*  =========== DOCUMENTATION ===========
+*
+* Online html documentation available at 
+*            http://www.netlib.org/lapack/explore-html/ 
+*
+*  Definition:
+*  ===========
+*
+*       INTEGER FUNCTION IDAMAX(N,DX,INCX)
+* 
+*       .. Scalar Arguments ..
+*       INTEGER INCX,N
+*       ..
+*       .. Array Arguments ..
+*       DOUBLE PRECISION DX(*)
+*       ..
+*  
+*
+*> \par Purpose:
+*  =============
+*>
+*> \verbatim
+*>
+*>    IDAMAX finds the index of element having max. absolute value.
+*> \endverbatim
+*
+*  Authors:
+*  ========
+*
+*> \author Univ. of Tennessee 
+*> \author Univ. of California Berkeley 
+*> \author Univ. of Colorado Denver 
+*> \author NAG Ltd. 
+*
+*> \date November 2011
+*
+*> \ingroup aux_blas
+*
+*> \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
+*>
+*  =====================================================================
       INTEGER FUNCTION IDAMAX(N,DX,INCX)
+*
+*  -- Reference BLAS level1 routine (version 3.4.0) --
+*  -- Reference BLAS is a software package provided by Univ. of Tennessee,    --
+*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+*     November 2011
+*
 *     .. Scalar Arguments ..
       INTEGER INCX,N
 *     ..
@@ -6,18 +63,6 @@
       DOUBLE PRECISION DX(*)
 *     ..
 *
-*  Purpose
-*  =======
-*
-*     IDAMAX finds the index of element having max. absolute value.
-*
-*  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 ..
@@ -31,28 +76,31 @@
       IF (N.LT.1 .OR. INCX.LE.0) RETURN
       IDAMAX = 1
       IF (N.EQ.1) 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
-      DMAX = DABS(DX(1))
-      IX = IX + INCX
-      DO 10 I = 2,N
-          IF (DABS(DX(IX)).LE.DMAX) GO TO 5
-          IDAMAX = I
-          DMAX = DABS(DX(IX))
-    5     IX = IX + INCX
-   10 CONTINUE
-      RETURN
+         DMAX = DABS(DX(1))
+         DO I = 2,N
+            IF (DABS(DX(I)).GT.DMAX) THEN
+               IDAMAX = I
+               DMAX = DABS(DX(I))
+            END IF
+         END DO
+      ELSE
 *
-*        code for increment equal to 1
+*        code for increment not equal to 1
 *
-   20 DMAX = DABS(DX(1))
-      DO 30 I = 2,N
-          IF (DABS(DX(I)).LE.DMAX) GO TO 30
-          IDAMAX = I
-          DMAX = DABS(DX(I))
-   30 CONTINUE
+         IX = 1
+         DMAX = DABS(DX(1))
+         IX = IX + INCX
+         DO I = 2,N
+            IF (DABS(DX(IX)).GT.DMAX) THEN
+               IDAMAX = I
+               DMAX = DABS(DX(IX))
+            END IF
+            IX = IX + INCX
+         END DO
+      END IF
       RETURN
       END