---
name: "slamrg"
section: "3"
platform: "linux"
package: "lapack-doc"
version: "3.12.1-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/slamrg.f"
---

# slamrg(3)

Part of [slamrg.f(3)](/slamrg.f/3.md).

## NAME

SRC/slamrg.f

## SYNOPSIS

### Functions/Subroutines

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.

## Function/Subroutine Documentation

### 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*

```
!>          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 Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line **98** of file **slamrg.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.