LAPACK  3.4.2
LAPACK: Linear Algebra PACKage
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dlasrt.f File Reference

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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.

Download DLASRT + dependencies [TGZ] [ZIP] [TXT]
 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.
          ID is CHARACTER*1
          = 'I': sort D in increasing order;
          = 'D': sort D in decreasing order.
          N is INTEGER
          The length of the array 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 is INTEGER
          = 0:  successful exit
          < 0:  if INFO = -i, the i-th argument had an illegal value
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
September 2012

Definition at line 89 of file dlasrt.f.

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