1HPL_dlocswpN(3)              HPL Library Functions             HPL_dlocswpN(3)
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NAME

6       HPL_dlocswpN - locally swaps rows within panel.
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SYNOPSIS

9       #include "hpl.h"
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11       void  HPL_dlocswpN(  HPL_T_panel  *  PANEL, const int II, const int JJ,
12       double * WORK );
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DESCRIPTION

15       HPL_dlocswpN performs  the local swapping operations  within  a  panel.
16       The  lower  triangular  N0-by-N0  upper block of the panel is stored in
17       no-transpose form (i.e. just like the input matrix itself).
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ARGUMENTS

20       PANEL   (local input/output)    HPL_T_panel *
21               On entry,  PANEL  points to the data structure  containing  the
22               panel information.
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24       II      (local input)           const int
25               On  entry,  II  specifies the row offset where the column to be
26               operated on starts with respect to the panel.
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28       JJ      (local input)           const int
29               On entry, JJ  specifies the column offset where the  column  to
30               be operated on starts with respect to the panel.
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32       WORK    (local workspace)       double *
33               On  entry,  WORK  is a workarray of size at least 2 * (4+2*N0).
34               WORK[0] contains  the  local  maximum  absolute  value  scalar,
35               WORK[1]  contains   the corresponding local row index,  WORK[2]
36               contains the corresponding global row index, and   WORK[3]   is
37               the  coordinate  of process owning this max.  The N0 length max
38               row is stored in WORK[4:4+N0-1];  Note  that this is  also  the
39               JJth  row   (or column) of L1. The remaining part of this array
40               is used as workspace.
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SEE ALSO

43       HPL_dlocmax (3), HPL_dlocswpT (3),  HPL_pdmxswp (3),  HPL_pdpancrN (3),
44       HPL_pdpancrT (3), HPL_pdpanllN (3), HPL_pdpanllT (3), HPL_pdpanrlN (3),
45       HPL_pdpanrlT (3),  HPL_pdrpancrN (3),  HPL_pdrpancrT (3),   HPL_pdrpan‐
46       llN (3),   HPL_pdrpanllT (3),   HPL_pdrpanrlN (3),   HPL_pdrpanrlT (3),
47       HPL_pdfact (3).
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51HPL 2.2                        February 24, 2016               HPL_dlocswpN(3)
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