?lasrt

Sorts numbers in increasing or decreasing order.

Syntax

call slasrt( id, n, d, info )

call dlasrt( id, n, d, info )

Include Files

  • mkl.fi

Description

The routine ?lasrt sorts the numbers in d in increasing order (if id = 'I') or in decreasing order (if id = 'D'). It uses Quick Sort, reverting to Insertion Sort on arrays of size ≤ 20. Dimension of stack limits n to about 232.

Input Parameters

The data types are given for the Fortran interface.

id

CHARACTER*1.

(d(1) ≤ ... ≤ d(n)) or into decreasing order

(d(1) ... d(n)), depending on id.

n

INTEGER. The length of the array d.

d

REAL for slasrt

DOUBLE PRECISION for dlasrt.

On entry, the array to be sorted.

Output Parameters

d

On exit, d has been sorted into increasing order

(d[0]≤d[1]≤ ... ≤ d[n-1]) or into decreasing order

(d[0] d[1] ... d[n-1]), depending on id.

info

INTEGER. If info = 0, the execution is successful.

If info < 0, the i-th parameter had an illegal value.

Pour de plus amples informations sur les optimisations de compilation, consultez notre Avertissement concernant les optimisations.