.TH BSbackward1 3 "10/26/1995" " " "BlockSolve95"
.SH NAME
BSbackward1 \- Backward triangular matrix multiplication on a
single vector

.SH INPUT PARAMETERS
.PD 0
.TP
.B A 
- The sparse matrix
.PD 1
.PD 0
.TP
.B x 
- The input vector
.PD 1
.PD 0
.TP
.B comm 
- The communication structure for A
.PD 1
.PD 0
.TP
.B procinfo 
- the usual processor information
.PD 1

.SH OUTPUT PARAMETERS
.PD 0
.TP
.B b 
- on exit contains A*x
.PD 1

.SH RETURNS
void

.SH NOTES
We assume that A has no i-nodes or cliques

.SH SYNOPSIS
.nf
void BSbackward1(BSpar_mat *A, FLOAT *x, FLOAT *b,
  BScomm *comm, BSprocinfo *procinfo)

.fi

.SH LOCATION
 BlockSolve95/src/BSbackward1.c