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HPL_dlocmax(3)		     HPL Library Functions		HPL_dlocmax(3)

NAME
       HPL_dlocmax - finds the maximum entry in	matrix column.

SYNOPSIS
       #include	"hpl.h"

       void HPL_dlocmax( HPL_T_panel * PANEL, const int	N, const int II, const
       int JJ, double *	WORK );

DESCRIPTION
       HPL_dlocmax finds  the maximum entry in the current column   and	 packs
       the  useful  information	in  WORK[0:3].	On exit,  WORK[0] contains the
       local maximum  absolute value  scalar,  WORK[1] is  the	 corresponding
       local  row  index,  WORK[2]  is the corresponding global	row index, and
       WORK[3] is the coordinate of the	process	owning this max.  When	N   is
       less  than  1, the WORK[0:2] is initialized to zero, and	WORK[3]	is set
       to the total number of process rows.

ARGUMENTS
       PANEL   (local input/output)    HPL_T_panel *
	       On entry,  PANEL	 points	to the data structure  containing  the
	       panel information.

       N       (local input)	       const int
	       On  entry,   N specifies	the local number of rows of the	column
	       of A on which we	operate.

       II      (local input)	       const int
	       On entry, II  specifies the row offset where the	column	to  be
	       operated	on starts with respect to the panel.

       JJ      (local input)	       const int
	       On  entry,  JJ  specifies the column offset where the column to
	       be operated on starts with respect to the panel.

       WORK    (local workspace)       double *
	       On entry, WORK  is  a workarray of size at least	4.   On	 exit,
	       WORK[0]	contains   the	local  maximum	absolute value scalar,
	       WORK[1] contains	 the corresponding local row  index,   WORK[2]
	       contains	 the  corresponding global row index, and  WORK[3]  is
	       the coordinate of process owning	this max.

SEE ALSO
       HPL_dlocswpN (3), HPL_dlocswpT (3), HPL_pdmxswp (3),  HPL_pdpancrN (3),
       HPL_pdpancrT (3), HPL_pdpanllN (3), HPL_pdpanllT	(3), HPL_pdpanrlN (3),
       HPL_pdpanrlT (3),  HPL_pdrpancrN	(3),  HPL_pdrpancrT (3),   HPL_pdrpan-
       llN (3),	  HPL_pdrpanllT	(3),   HPL_pdrpanrlN (3),   HPL_pdrpanrlT (3),
       HPL_pdfact (3).

HPL 2.3			       December	2, 2018			HPL_dlocmax(3)

NAME | SYNOPSIS | DESCRIPTION | ARGUMENTS | SEE ALSO

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