DLAMRG will create a permutation list which will merge the elements


 of A (which is composed of two independently sorted sets) into a


 single set which is sorted in ascending order.

N1

          N1 is INTEGER

N2

          N2 is INTEGER


         These arguments contain the respective lengths of the two


         sorted lists to be merged.

A

          A is DOUBLE PRECISION array, dimension (N1+N2)


         The first N1 elements of A contain a list of numbers which


         are sorted in either ascending or descending order.  Likewise


         for the final N2 elements.

DTRD1

          DTRD1 is INTEGER

DTRD2

          DTRD2 is INTEGER


         These are the strides to be taken through the array A.


         Allowable strides are 1 and -1.  They indicate whether a


         subset of A is sorted in ascending (DTRDx = 1) or descending


         (DTRDx = -1) order.

INDEX

          INDEX is INTEGER array, dimension (N1+N2)


         On exit this array will contain a permutation such that


         if B( I ) = A( INDEX( I ) ) for I=1,N1+N2, then B will be


         sorted in ascending order.

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

June 2016