1lis_array_cgs(3f) Lis Library Functions lis_array_cgs(3f)
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6 lis_array_cgs - calculate the QR factorization with the classical Gram-
7 Schmidt process
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11 subroutine lis_array_cgs(LIS_INTEGER n, LIS_SCALAR a(), LIS_SCALAR q(),
12 LIS_SCALAR r(), LIS_INTEGER ierr);
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16 Calculate the QR factorization QR=A with the classical Gram-Schmidt
17 process.
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21 n The size of the matrices
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24 a The array that stores matrix A of size n * n
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28 q The array that stores orthogonal matrix Q of size n * n
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31 r The array that stores upper-triangular matrix R of size n * n
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35 lis(3)
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37 http://www.ssisc.org/lis/
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42Man Page 3 Dec 2014 lis_array_cgs(3f)