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HPL_dmatgen(3)               HPL Library Functions              HPL_dmatgen(3)


NAME

       HPL_dmatgen - random matrix generator.


SYNOPSIS

       #include "hpl.h"

       void HPL_dmatgen( const int M, const int N, double * A, const int LDA,
       const int ISEED );


DESCRIPTION

       HPL_dmatgen generates (or regenerates) a random matrix A.

       The  pseudo-random  generator uses the linear congruential algorithm:
       X(n+1) = (a * X(n) + c) mod m  as  described  in the  Art of Computer
       Programming, Knuth 1973, Vol. 2.


ARGUMENTS

       M       (input)                 const int
               On entry,  M  specifies  the number  of rows of the matrix A.
               M must be at least zero.

       N       (input)                 const int
               On entry,  N specifies the number of columns of the matrix A.
               N must be at least zero.

       A       (output)                double *
               On entry, A points to an array of dimension (LDA,N). On exit,
               this  array  contains   the   coefficients  of  the  randomly
               generated matrix.

       LDA     (input)                 const int
               On entry, LDA specifies the leading dimension of the array A.
               LDA must be at least max(1,M).

       ISEED   (input)                 const int
               On entry, ISEED  specifies  the  seed  number to generate the
               matrix A. ISEED must be at least zero.


SEE ALSO

       HPL_ladd (3), HPL_lmul (3), HPL_setran (3), HPL_xjumpm (3),
       HPL_jumpit (3), HPL_rand (3).

HPL 2.1                        October 26, 2012                 HPL_dmatgen(3)

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