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lis_array_cgs(3) Lis Library Functions lis_array_cgs(3)

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

#include "lis.h"

LIS_INT lis_array_cgs(LIS_INT n, LIS_SCALAR a[], LIS_SCALAR q[], LIS_SCALAR r[]);

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

n
The size of the matrices

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

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

The following exit values are returned:
0
The process is normally terminated
unspecified
An error occurred

lis(3)

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

3 Dec 2014 Man Page

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