.TH BSb_backward 3 "10/26/1995" " " "BlockSolve95"
.SH NAME
BSb_backward \- Backward triangular matrix multiplication on a
block of vectors

.SH INPUT PARAMETERS
.PD 0
.TP
.B A 
- The sparse matrix
.PD 1
.PD 0
.TP
.B x 
- The contiguous block of input vectors
.PD 1
.PD 0
.TP
.B comm 
- The communication structure for A
.PD 1
.PD 0
.TP
.B block_size 
- the number of input vectors
.PD 1
.PD 0
.TP
.B procinfo 
- the usual processor information
.PD 1

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

.SH RETURNS
void

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

.fi

.SH LOCATION
 BlockSolve95/src/BSb_backward.c