DLAMRG (3) Linux Manual Page

dlamrg.f –

Synopsis

Functions/Subroutines

subroutine dlamrg (N1, N2, A, DTRD1, DTRD2, INDEX)
DLAMRG creates a permutation list to merge the entries of two independently sorted sets into a single set sorted in ascending order.

Function/Subroutine Documentation

subroutine dlamrg (integerN1, integerN2, double precision, dimension( * )A, integerDTRD1, integerDTRD2, integer, dimension( * )INDEX)

DLAMRG creates a permutation list to merge the entries of two independently sorted sets into a single set sorted in ascending order.

Purpose:

 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.

 

Parameters:

N1

 N1 is INTEGER

N2

 N2 is INTEGER

 These arguements 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.

 

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

September 2012

Definition at line 100 of file dlamrg.f.

Author

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