# dlasrt.f man page

dlasrt.f

## Synopsis

### Functions/Subroutines

subroutine **dlasrt** (ID, **N**, D, INFO)**DLASRT** sorts numbers in increasing or decreasing order.

## Function/Subroutine Documentation

### subroutine dlasrt (character ID, integer N, double precision, dimension( * ) D, integer INFO)

**DLASRT** sorts numbers in increasing or decreasing order.

**Purpose:**

Sort the numbers in D in increasing order (if ID = 'I') or in decreasing order (if ID = 'D' ). Use Quick Sort, reverting to Insertion sort on arrays of size <= 20. Dimension of STACK limits N to about 2**32.

**Parameters:***ID*ID is CHARACTER*1 = 'I': sort D in increasing order; = 'D': sort D in decreasing order.

*N*N is INTEGER The length of the array D.

*D*D is DOUBLE PRECISION array, dimension (N) On entry, the array to be sorted. On exit, D has been sorted into increasing order (D(1) <= ... <= D(N) ) or into decreasing order (D(1) >= ... >= D(N) ), depending on ID.

*INFO*INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value

**Author:**Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Date:**June 2016

Definition at line 90 of file dlasrt.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page dlasrt(3) is an alias of dlasrt.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK