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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)

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