HPL_dmatgen HPL 2.2 Library Functions February 24, 2016


HPL_dmatgen random matrix generator.


#include "hpl.h"

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


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.


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, HPL_lmul, HPL_setran, HPL_xjumpm, HPL_jumpit, HPL_rand.