HPL_xjumpm - Man Page
Compute constants to jump in the random sequence.
Synopsis
#include "hpl.h"
void HPL_xjumpm( const int JUMPM, int * MULT, int * IADD, int * IRANN, int * IRANM, int * IAM, int * ICM );
Description
HPL_xjumpm computes the constants A and C to jump JUMPM numbers in the random sequence: X(n+JUMPM) = A*X(n)+C. The constants encoded in MULT and IADD specify how to jump from one entry in the sequence to the next.
Arguments
- JUMPM (local input) const int
On entry, JUMPM specifies the number of entries in the sequence to jump over. When JUMPM is less or equal than zero, A and C are not computed, IRANM is set to IRANN corresponding to a jump of size zero.
- MULT (local input) int *
On entry, MULT is an array of dimension 2, that contains the 16-lower and 15-higher bits of the constant a to jump from X(n) to X(n+1) = a*X(n) + c in the random sequence.
- IADD (local input) int *
On entry, IADD is an array of dimension 2, that contains the 16-lower and 15-higher bits of the constant c to jump from X(n) to X(n+1) = a*X(n) + c in the random sequence.
- IRANN (local input) int *
On entry, IRANN is an array of dimension 2. that contains the 16-lower and 15-higher bits of the encoding of X(n).
- IRANM (local output) int *
On entry, IRANM is an array of dimension 2. On exit, this array contains respectively the 16-lower and 15-higher bits of the encoding of X(n+JUMPM).
- IAM (local output) int *
On entry, IAM is an array of dimension 2. On exit, when JUMPM is greater than zero, this array contains the encoded constant A to jump from X(n) to X(n+JUMPM) in the random sequence. IAM(0:1) contains respectively the 16-lower and 15-higher bits of this constant A. When JUMPM is less or equal than zero, this array is not referenced.
- ICM (local output) int *
On entry, ICM is an array of dimension 2. On exit, when JUMPM is greater than zero, this array contains the encoded constant C to jump from X(n) to X(n+JUMPM) in the random sequence. ICM(0:1) contains respectively the 16-lower and 15-higher bits of this constant C. When JUMPM is less or equal than zero, this array is not referenced.
See Also
HPL_ladd (3), HPL_lmul (3), HPL_setran (3), HPL_jumpit (3), HPL_rand (3).
Referenced By
HPL_dmatgen(3), HPL_jumpit(3), HPL_ladd(3), HPL_lmul(3), HPL_pdmatgen(3), HPL_rand(3), HPL_setran(3).