Manual Reference Pages - HPL_RAND (3)
HPL_rand - random number generator.
generates the next number in the random sequence. This
function ensures that this number lies in the interval (-0.5, 0.5].
The static array irand contains the information (2 integers) required
to generate the next number in the sequence X(n). This number is
computed as X(n) = (2^32 * irand + irand) / d - 0.5, where the
constant d is the largest 64 bit positive integer. The array irand is
then updated for the generation of the next number X(n+1) in the
random sequence as follows X(n+1) = a * X(n) + c. The constants a and
c should have been preliminarily stored in the arrays ias and ics as
2 pairs of integers. The initialization of ias, ics and irand is
performed by the function HPL_setran.
|HPL 2.1 ||HPL_RAND (3) ||October 26, 2012 |
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