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BStri_mult(3)			 BlockSolve95			 BStri_mult(3)

NAME
       BStri_mult - Multiply the matrix	(A - shift*B) by a block of vectors

INPUT PARAMETERS
       A      -	a sparse matrix
       comm_A -	the communication structure for	A
       B      -	a sparse matrix
       comm_B -	the communication structure for	B
       v1     -	the block of vectors to	multiply by
       t1     -	a block	of work	vectors
       t2     -	a block	of work	vectors
       shift  -	the shift value	in (A-shift*B)
       BS     -	the number of vectors in v1
       procinfo
	      -	the usual processor stuff

OUTPUT PARAMETERS
       v2     -	the resulting block of vectors

RETURNS
       void

NOTES
       Different code is used to multiply a single vector than is used to mul-
       tiply a block of	vectors	(this improves	efficiency).   Also  different
       code is used if shift=0.0.  If B	is NULL, then we assume	that it	is the
       identity	matrix.

SYNOPSIS
       void BStri_mult(BSpar_mat *A, BScomm *comm_A, BSpar_mat *B, BScomm *comm_B,
	FLOAT *v1, FLOAT *v2, FLOAT *t1, FLOAT *t2, FLOAT shift, int BS,
	BSprocinfo *procinfo)

LOCATION
	BlockSolve95/src/BStri_mult.c

				   4/4/1996			 BStri_mult(3)

NAME | INPUT PARAMETERS | OUTPUT PARAMETERS | RETURNS | NOTES | SYNOPSIS | LOCATION

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