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lamrg(3) | Library Functions Manual | lamrg(3) |
NAME¶
lamrg - lamrg: permutation to merge 2 sorted lists
SYNOPSIS¶
Functions¶
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.
subroutine SLAMRG (n1, n2, a, strd1, strd2, index)
SLAMRG creates a permutation list to merge the entries of two
independently sorted sets into a single set sorted in ascending order.
Detailed Description¶
Function Documentation¶
subroutine DLAMRG (integer n1, integer n2, double precision, dimension( * ) a, integer dtrd1, integer dtrd2, 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 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. !>
Author
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 98 of file dlamrg.f.
subroutine SLAMRG (integer n1, integer n2, real, dimension( * ) a, integer strd1, integer strd2, integer, dimension( * ) index)¶
SLAMRG creates a permutation list to merge the entries of two independently sorted sets into a single set sorted in ascending order.
Purpose:
!> !> SLAMRG 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 is INTEGER !>
N2
!> N2 is INTEGER !> These arguments contain the respective lengths of the two !> sorted lists to be merged. !>
A
!> A is REAL 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. !>
STRD1
!> STRD1 is INTEGER !>
STRD2
!> STRD2 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 (STRDx = 1) or descending !> (STRDx = -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 California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 98 of file slamrg.f.
Author¶
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