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Man Pages
lis_array_matvect(3) Lis Library Functions lis_array_matvect(3)

lis_array_matvect - calculate the matrix vector product

#include "lis.h"

LIS_INT lis_array_matvect(LIS_INT n, LIS_SCALAR a[], LIS_SCALAR x[], LIS_SCALAR y[], LIS_INT op);

Calculate the matrix-vector product A^Tx.

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 = A^Tx
LIS_SUB_VALUE
y = y - A^Tx

y
y

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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