NAME

lis_array_cgs - calculate the QR factorization with the classical Gram-Schmidt process

SYNOPSIS

subroutine lis_array_cgs(LIS_INTEGER n, LIS_SCALAR a(), LIS_SCALAR q(), LIS_SCALAR r(), LIS_INTEGER ierr);

DESCRIPTION

Calculate the QR factorization QR=A with the classical Gram-Schmidt process.

INPUT

n

The size of the matrices

a

The array that stores matrix A of size n * n

OUTPUT

q

The array that stores orthogonal matrix Q of size n * n

r

The array that stores upper-triangular matrix R of size n * n

SEE ALSO

lis(3)

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