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<TITLE>HPL_xjumpm HPL 2.0 Library Functions September 10, 2008</TITLE> |
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ALINK = "#ffff00"> |
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<H1>Name</H1> |
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<B>HPL_xjumpm</B> Compute constants to jump in the random sequence. |
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<H1>Synopsis</H1> |
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<CODE>#include "hpl.h"</CODE><BR><BR> |
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<CODE>void</CODE> |
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<CODE>HPL_xjumpm(</CODE> |
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<CODE>const int</CODE> |
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<CODE>JUMPM</CODE>, |
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<CODE>int *</CODE> |
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<CODE>MULT</CODE>, |
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<CODE>int *</CODE> |
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<CODE>IADD</CODE>, |
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<CODE>int *</CODE> |
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<CODE>IRANN</CODE>, |
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<CODE>int *</CODE> |
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<CODE>IRANM</CODE>, |
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<CODE>int *</CODE> |
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<CODE>IAM</CODE>, |
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<CODE>int *</CODE> |
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<CODE>ICM</CODE> |
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<CODE>);</CODE> |
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<H1>Description</H1> |
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<B>HPL_xjumpm</B> |
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computes the constants A and C to jump JUMPM numbers in |
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the random sequence: X(n+JUMPM) = A*X(n)+C. The constants encoded in |
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MULT and IADD specify how to jump from one entry in the sequence to |
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the next. |
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<H1>Arguments</H1> |
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<PRE>
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JUMPM (local input) const int |
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On entry, JUMPM specifies the number of entries in the |
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sequence to jump over. When JUMPM is less or equal than zero, |
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A and C are not computed, IRANM is set to IRANN corresponding |
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to a jump of size zero. |
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</PRE>
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<PRE>
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MULT (local input) int * |
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On entry, MULT is an array of dimension 2, that contains the |
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16-lower and 15-higher bits of the constant a to jump from |
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X(n) to X(n+1) = a*X(n) + c in the random sequence. |
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</PRE>
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<PRE>
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IADD (local input) int * |
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On entry, IADD is an array of dimension 2, that contains the |
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16-lower and 15-higher bits of the constant c to jump from |
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X(n) to X(n+1) = a*X(n) + c in the random sequence. |
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</PRE>
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<PRE>
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IRANN (local input) int * |
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On entry, IRANN is an array of dimension 2. that contains the |
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16-lower and 15-higher bits of the encoding of X(n). |
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</PRE>
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<PRE>
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IRANM (local output) int * |
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On entry, IRANM is an array of dimension 2. On exit, this |
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array contains respectively the 16-lower and 15-higher bits |
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of the encoding of X(n+JUMPM). |
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</PRE>
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<PRE>
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IAM (local output) int * |
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On entry, IAM is an array of dimension 2. On exit, when JUMPM |
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is greater than zero, this array contains the encoded |
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constant A to jump from X(n) to X(n+JUMPM) in the random |
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sequence. IAM(0:1) contains respectively the 16-lower and |
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15-higher bits of this constant A. When JUMPM is less or |
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equal than zero, this array is not referenced. |
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</PRE>
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<PRE>
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ICM (local output) int * |
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On entry, ICM is an array of dimension 2. On exit, when JUMPM |
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is greater than zero, this array contains the encoded |
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constant C to jump from X(n) to X(n+JUMPM) in the random |
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sequence. ICM(0:1) contains respectively the 16-lower and |
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15-higher bits of this constant C. When JUMPM is less or |
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equal than zero, this array is not referenced. |
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</PRE>
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<H1>See Also</H1> |
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<A HREF="HPL_ladd.html">HPL_ladd</A>, |
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<A HREF="HPL_lmul.html">HPL_lmul</A>, |
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<A HREF="HPL_setran.html">HPL_setran</A>, |
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<A HREF="HPL_jumpit.html">HPL_jumpit</A>, |
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<A HREF="HPL_rand.html">HPL_rand</A>. |
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