lis_array_matvec(3)

NAME
lis_array_matvec - calculate the matrix vector product

SYNOPSIS
#include "lis.h" LIS_INT lis_array_matvec(LIS_INT n, LIS_SCALAR a[], LIS_SCALAR x[], LIS_SCALAR y[], LIS_INT op);

DESCRIPTION
Calculate the matrix-vector product Ax.

INPUT

n   The size of the matrix and vectors

a   The array that stores matrix A of size n * n

x   The array that stores vector x of size n

y   The array that stores vector y of size n

op

    LIS_INS_VALUE
        y = Ax

    LIS_SUB_VALUE
        y = y - Ax

OUTPUT

y   y

EXIT STATUS
The following exit values are returned:

0   The process is normally terminated

unspecified
    An error occurred

SEE ALSO
lis(3)

http://www.ssisc.org/lis/